EN | Bosch gasoline direct injection

Bosch gasoline direct injection as the key to clean and economical engines: reduced fuel consumption and emissions, with enhanced driving dynamics thanks to direct high pressure injection of the fuel into the combustion chamber.
This video in German: • DE | Bosch Benzin-Dire...

[@northyegarden]

Simply an amazing animation! Props to the animators

[@shimronnetia]

+northgarden -this animation makes someone happy

[@gparag88]

northgarden which software for animation

[@michaelovitch]

How do you clean the intake ports from clogging by EGR and PCV mix if you don't have gas anymore running through ?

[@boschmobility]

Thanks to providing an optimal fuel/air mixture, deposits on the inlet valves of gasoline direct-injection engines have been largely minimized.

[@youfoundisaac]

michaelovitch holy cow! Bosch actually answered you! well kind of.... I made it to 60000 miles and only now do I need a valve servicing. I suggest the ol' Italian tune up every once in a while, and if your in the U.S. look for Top Tier gas. After I get my valves cleaned I'll add a catch can. Hopefully that'll help

[@surferboy198]

wow i'm impressed! so nice explained! with nice animation! topclass!

[@myname9252]

One hell of an illustration. Awesome! Seems bosch offers everything from wipers to ecu.

[@crazyoncoffee]

Bosch makes a version of almost everything under a modern car’s hood. Wiper blades are just the one thing the consumer sees.

[@vijayam1]

All I've learned in years in just 8 mins, Bosch way! Excellnte, and danke!

[@corvettez06usa]

What a wonderful, informative, and clear video. I like it and hope a lot of people see it to better understand how a car works. It's such a part of our daily lives that they get taken for granted, but the automobile is really an amazing example of engineering and advancement since they go back over 100 years at this point.

[@jayxtreme6]

it also lowers efficiency because of a more stratified charge. It's a good system for diesels, for gasoline engines not so much. Take a look at FreeValve cylinder heads, they don't need GDI because they can achieve high compression with port injection, and since the charge is homogeneous, they get even better efficiency. Factor the high cost of a direct injection system (both the direct cost of replacing broken components and the indirect cost of carbon buildup on intake components) and GDI is a solution to the wrong problem. The right solution is camless engines.

[@ramirorivera5766]

This Invention design is a replica of how diesel engines work today, although it is a great I idea for bosh to hit the market as most people use personal vehicles than big trucks, awesome engine animation...! We will be buying mostly bosh parts in the future!

[@zhaoxuanzhu4364]

Is the injection driver on Bosch FlexECU compatible with any Bosch Injector? Specifically those on A20DTH.

[@sanyasiraosenapathi3164]

WE are thank ful to BOSCH Fuel pumping systems for all types of E N G I N E S . Regards S S Rao

[@pomegranatechannel]

Thank you for the comprehensive and high quality video.

[@m.hmalik8520]

OK so basically the point is that EFI, MPFI, GDI and TBI are the same thing because the fuel injection, ignition timing and spark timing are controlled by the Engine management computer. But the above injection systems I have mentioned above the only difference between them is that the position of fuel injectors?...Plz do correct me if I am wronge.

[@beamingdevice7627]

port injection goes into the intake at some point, over the valves and into the cylinder. direct injection goes directly into cylinder.

[@oo0Spyder0oo]

This is essentially the common rail system my diesel uses. All those high pressure components means big dollars when it breaks. Cost around $3000 to replace the injectors and fuel rail when mine shit itself near 100,000 km. No advantage in fuel savings when you end up with bigger maintenance bills.

[@beamingdevice7627]

correct. I think they call this job creation

[@amunir65]

well said.its the fact

[@WhyteLis21]

im pretty sure once direct injectors will become more common in the near future, the cost will go down unless u go under dealership instead of regular auto shop or diy. plus more aftermarket direct injector parts become more common to buy too since direct injector seems more efficient other than diesel engine.

[@oo0Spyder0oo]

***** That's optimistic but sadly untrue. The overhaul of the system in labour cost alone is a huge debt, that won't go down, wages keep rising.

[@WhyteLis21]

we shall see. direct injectors has been around since the early 1900s so its not like its something new. but its has been close to perfected in the last decade or so. i mean direct injectors will have it's place among diesel, flex fuel, bio diesel, regularly gasoline engine. the cost will have to go down if there's going to be mass production of direct injectors for years to come. who knows. otherwise why build direct injectors in the first place if it's so expansive. it's place in common newer model cars over older engines. so we don't really know what the future holds on direct injectors.

[@d82l]

I like how they explain this in such a way as to suggest they invented scavenging.

[@OmarRamirez-bs8np]

H bit motoring u

[@harryberry474]

They forgot to mention the added expense (to the consumer) due to carbon build-up on the backs of the intake valves, cost to clean carbon build-up $600-up depending on engine and that will happen every 30k -60k miles. Thanks for the long list of parts (components) that have been added to modern engines...all I see are potential parts that will fail. Time for electric cars. A few (not many) auto manufactures have addressed the issue of intake valve carbon build-up by adding secondary port injectors.

[@mzee5533]

These are the best animation I’ve seen so far

[@jackpettman7848]

Beautiful 3D work. Excellent solutions bosch

[@abhishekvyas7855]

Can you please tell me which software you use for showing the flow of gas and water around the 3d model.

[@BEAMERNOOB]

I really like the way you guys set stuff up.

[@TheVintagetamiya]

Bosch doesn't mention a pretty big problem with direct injection.The build up of carbon on the engine valves resulting in some cases of catastrophic engine failure.

[@Kauffman578]

This is design to make the car last less and buy new

[@baileykleinbard7633]

If they installed oil catch cans on the crankcase ventilation and educated people on how to maintain them you would have a lot less buildup on the intake valves

[@myfagan]

Catalytic failure

[@arnemaeschaelck5012]

TheVintagetamiya as well as the emissions of soot and nox, which is something that was never associated with gasoline cars (since the 90's at least) and is why they're all required to have regenerative particulate filters in Europe since late 2018… which decreases their reliability even further

[@bogdandacian2001]

@@arnemaeschaelck5012 Well, my Audi A3 exhaust pipe is all black...

[@adab4586]

Hello Great Animation, Please If you could tell us what is the name of software that made this animation???

[@zhongruiwang]

Despite the excellet technical presentation, the video will be more convining if the introduction part briefs the long history of Bosch's efforts on direct injection. For instance, PZ 12 HP 110/19, developed in 1930s, powered the legendary Daimler-Benz DB600 series aircraft engines which had keep the properller aircraft speed record for many years.

[@abdullatif3874]

Why can not cease air valve and replace spark plug by diesel injections system but for fuel and air

[@mojtababiazaran7247]

چقدر جامع وکامل ممنونم

[@ManojKumar-mw2kv]

what software is used to create this video. I am very curious to learn how to create this animation video.

[@abhishekvyas7855]

If you know the software then please tell me too.....

[@keyurdhungana318]

so... you're talking about more than 1600 firing in the cylinders per minute... on top of that... the speed don't remain constant.. so the firing will vary as well...unlike normal engine where the timing belt just opened and closed the intake valves and air just went in.... timing the right amount of air at the right time will require huge precision... so.. has there been any progress in the air input sensor..or it is already developed??...

[@m43_felix]

Please keep posting such great videos Bosch !!

[@ccommit9049]

Impressive animation, thanks for this.

[@azthundercloud]

will the need for additional fuel filters be needed? i am having an issue of the mrs with a habit of running her vehicle on empty and sucking crud off the bototm of the tank and taking out injectors. at $150 a pop it gets expensive.

[@boschmobility]

+azthundercloud The Fuel-supply system is designed with two fuel filters. A pre-filter in the tank protects the in-tank fuel pump during the whole vehicle lifetime. The second filter is a fine-filter between fuel-pump and injection system. This fine-filter is placed either in-tank or in the fuel line between tank and engine. If in-tank then it is designed for lifetime and no change is needed. If outside the tank then it depends on the vehicle manufacturers mandatory service or change intervals. The entire system design and mandatory service intervals reliably protects the fuel injectors from impurities regardless of the user’s fueling behavior. Modifications are neither required nor advisable.

[@Xgamer121X]

i dont know if the animation is an exact 100% representation of what really happens in direct injected engines, but if it is, im confused. i see the injection event is happening during the intake stroke when the intake valve is open. if the intake valve is is open, the cylinder is taking in air. it is pulling it in. i would not think that the cylinder is under pressure during the intake stroke, so what is the need for the high injection pressures?

[@boschmobility]

+Xgamer121X A correspondingly high pressure is required in order to achieve fine atomization under all conditions and thus ensure a good fuel/air mixture formation. It is a fundamental requirement for complete and clean combustion.

[@DodongWerkzPh]

why bosch dont make their own brand of car?

[@kwoods3379]

richard cero it would be a great car

[@DodongWerkzPh]

ahh okay.

[@pilskadden]

Salvo Farina FIAT (actually Alfa Romeo) were the first to use common rail injection on Diesel engines. Mitsubishi were the first to use the modern direct injection on petrol engines.

[@kesavanraman5492]

only a brand is for what they entered but not for what they don't know.

[@Falinzin]

The right answer to this question is cars are expensive to manufacture and have a small profit margin, vehicle technology on the other hand, is much easier to manufacture and is a field growing faster than automotive production. In short, building cars = expensive and need a huge expensive plant, building/designing car technology can be done with a couple bright engineers and a computer with Autocad.

[@ethanwelch6345]

So if you were to turbo charge an engine that’s NA with direct injection then how would you upgrade the injectors ? Or Is that necessary ?

[@akashkr8541]

wow what a wonderful animation. Best video to understand it for ME students.

[@dadsfave]

It all seems quite complex compared to Toyota's Atkinson cycle created by simply varying the valve timing. You've got the high pressure fuel pump, all kinds of sensors and a turbo, all of which can fail. The high compression ratio creates NOx and particulates so you need exhaust treatment to meet regulations. The valves and intake manifold are not getting washed by fuel, so they get coated with carbon which has to be cleaned out. Sure you get more power out of a smaller engine, but once you add the turbo and other stuff, is the engine really much lighter?

[@aidan1585]

A 1.4 turbo drives better than an N/A 1.8, because of the added torque. Also Toyota petrol engines with Atkinson cycle have GPFs (Gasoline particulate filter), like in their hybrids to get the lowest CO2 and NOx levels they can.

[@BroDudeYo]

Dies ist sehr interessant! Ich habe das noch nie gesehen.

[@ManojKumar-mw2kv]

which software is used for this animation? i want to create such animations.

[@roostersideburns3440]

what about carbon build up on the intake valves

[@austinogland9153]

So how do these engines avoid premature combustion? Is it due to the more precise mixing and timing or what?

[@boschmobility]

Austin Ogland Yes, exactly. Have a look at out website, where you can find more detailed information about the function of our gasoline direct injection: products.bosch-mobility-solutions.com/en/de/powertrain/powertrain_systems_for_passenger_cars_1/direct_gasoline_injection/direct_gasoline_injection_23.html

[@boschmobility]

***** Unfortunately we can not comment on future developments from Bosch. Please be assured that we include all technical solutions for powerful, economical and clean mobility in our development process.

[@777shrey]

how is the air-fuel ratio maintained if you are not making use of carburetor??

[@boschmobility]

Shreyas Jagtap For optimum combustion, the injected fuel mass must be regulated in a certain ratio to the air mass supplied (air mass : mass of fuel = 14.7 : 1). With the hot-film air mass meter the air mass flowing into the intake manifold is determined. Via the throttle valve the for the required torque necessary air mass for the combustion is set. The engine control unit determines the optimum fuel mass to be injected through the injectors into the combustion chamber from the air mass and the residual oxygen content of the exhaust gas (oxygen sensor).

[@mihaivalentinmonea5822]

which program is used to create a short movie like this?

[@mianarshed]

Very nicely explained. Really appreciate.

[@engineman8422]

Very impressive technology there. It seems the future is today. Wow.

[@simonsafi7589]

Bosch is always the leader. great video.

[@kasapis6]

I just have to say to Bosch a big thank you for making GDI system I been working on cars for more the 38 years now and have been trained by Bosch Australia and I love all the work the Bosch has given me with the new GDI system like lots of carbon build up and I have lost count how many high pressures pumps have fitted to VW and Audi and Opel cars and let not talk about the particulates that the Bosch GDI system have ..!! hope very soon Bosch make it that all GDI system have particulate filters on all cars

[@boschmobility]

+Stephen Kasapis Optimized air flow in the cylinder and improved jet flow of the laser-drilled high-pressure injectors result in clean combustion in the DI engine. This minimizes the build-up of deposition products in the combustion chamber. Thanks to its GDI system, Bosch complies with all current emission legislation, while working on solutions with which to meet future, more stringent limits as well.

[@rick9021090210]

what about durability? are these designs made to last at least 10 years with minimal manteinance?

[@boschmobility]

+rick9021090210 The durability of a gasoline injector is 15 years/240.000 km

[@doc.voltold4232]

what are the main differences beetween a gasoline and a diesel injector? Also, we have a unplated car for closed track use, it is a cdti engine. we remapped it to increase power, changed turbocharger and some other works. would increase the size of the injectors help with the performance?

[@boschmobility]

+Doc. Volt The main difference between a gasoline and a diesel engine is the combustion process - especially the pressure level. For that reason there are different concepts of the injectors.

[@chaostade4087]

that's what i call a good explanation.

[@sanyasiraosenapathi3164]

Is it DIRECT IGNITION,...forDesile Engine, SPARK IGNITION For Petrol/Gasoline Engine... Regards S S Rao

[@amandeepsinghsandhu4906]

Gasoline Means petrol, most probably for SI System

[@AndyRRR0791]

Variable intake manifold diameter...? That's pretty cool technology!

[@rogeraydin908]

As this was uploaded in 2013 and it's 2016 now, i'm curious if you all have made improvements for this technology yet? You don't have to be specific at what you all have done if you made any progress.

[@boschmobility]

Improvements regarding the gasoline direct injection technology have been made in the last years, such as injection at a pressure of 350 bar in place of the previous 200 bar. The higher pressure means the fuel is more finely atomized, significantly reducing particulates.

[@rogeraydin908]

+Bosch Mobility Solutions Thanks for the information.

[@nikhilmahajan39]

But increase in injection pressure also leads to increase in particulate number. So how do you control that..?

[@brandontracy9621]

2 drawbacks is new car owners don't realize that the new unfamiliar ticking noise coming from there engine is a normal noise coming from the high pressure fuel pump. second issue is the back of the valves are not getting cleaned like a conventional port injection engine. that causes carbon buildup, leading to sticking valves, leading too intermittent misfires, in some cases catastrophic valve and cylinder head damage after the valve sticks and the pistons slams into it.

[@philbullock1854]

Welcome to the future high pressure fuel systems are here to stay so long....45psi fuel injectors you have been good to my pockets

[@jaydeepchauhan9555]

What a video .....😘😘😘😘 such type of animation I wanted to watch and feel the reality.👍👍👍

[@garage_34]

it should be like this so the engine do not need an overlapping valve that wasting lot of gasoline.. but without overlapping, it will generate more heat and knocking that need to be solved, but of course will create more efficiency.

[@gvvq-pi5ml]

It sounds very much like common rail diesel idea to me..similar idea I mean

[@chinmaydamle2959]

Good illustration... Just like diesel engines, where there is leak off line for fuel.. Do we have same fuel leak off lines for GDI injectors ?🤔

[@bjcastro11]

this technology is similar to diesel operations other than the obvious combustion process, that is exactly what this is. but like many said, this creates particulates and in this case in current regulations now needs a DPF Regen system, so I wonder if this even made it to production....

[@guthrie1181]

I love direct fuel injection. Even if I have to clean my intake valves every 40,000 miles. It's so worth it.

[@fadimo305]

Robbspeed3 lol, stop being cheap fuel. Only use Top tier fuel providers and it will help. Use a better oil also not that cheap mobil one crap

[@guthrie1181]

fadimo305​ I think you're a little confused on the subject. Fuel and oil quality have nothing to do with the intake valve deposits. With GDI, the fuel bypasses the intake valves all together, and oil vapors will occur whether you use synthetic or not. The carbon deposits are caused by a combination of exhaust gasses from the EGR valve, and oil vapors from the pcv system. There are 3 ways to reduce or eliminate this problem. You can delete the EGR valve, and install an oil catch can, or you can just spray methanol. Another way is supplemental port fuel injection, but those kits are expensive and only for the really high horsepower guys. And btw, I do use top tier fuel(exxon). My car is tuned for 93 octane, and I only give it the best. As far as oil goes, I change mine every 2,500 miles(unnecessary.. I know), so I don't need the best synthetic known to man. There are plenty of used oil analysis reports out there that confirm this.

[@danekeeper1]

is there any new technologies to correct the intake valve carbon buildup now that there is no fresh fuel going thru the intake valves effectively cleaning them????

[@boschmobility]

+danekeeper1 Optimized air flow in the cylinder and improved jet flow of the laser-drilled high-pressure injectors result in clean combustion in the DI engine. This minimizes the build-up of deposition products on the engine valves caused by back-flowing exhaust gas.

[@MrJeronimoable]

@@boschmobility it's not about the backflow of exhaust, it's the PCV oil vapors, and EGR soot that's introduced into the engine which gets the intake valves dirty really quickly

[@shimronnetia]

very good animation. long live the creators

[@冯怡然-p9c]

impressive !! could someone told u what software is this animation made from ?? I want to learn it!!!

[@doodskie999]

also does the duramax or vm motori r425 engine use bosch injectors? are they uro 5 rated?

[@boschmobility]

Current DURAMAX engines are Diesel engines equipped with Bosch Piezo CRS, designed to meet Tier2BIN5 emissions legislation. R425 uses Bosch injectors. It is a quite old engine with applications for Euro5.

[@doodskie999]

+Bosch Mobility Solutions thanks for the reply. how about the a428 dohc engine? does it have 3rd gen piezo injectors?

[@yogisykes]

can this direct injection use to indirect injection engine? what should to be modifying?

[@boschmobility]

+Yogi Anmaris No, because the systems are completely different. Indirect injection injects into the port fuel, direct injection injects side or center mounted directly into the cylinder head. Each direct injection engine needs a defined spray design for each system requirement, engine, and combustion strategy.

[@entrace1]

The More I watch videos about car engines, the more I wonder how the hell they even work at all.

[@roadrunnerblink]

Didn't quite understand why it's better to have the fuel and air mixing inside the cylinder as opposed to having it pre-mixed.....?

[@martinandersson5278]

Much better automation of the fuel And less sensitive for pumping losses and condensation of the fuel

[@banglaforceuk]

+Martin Andersson agreed, atomisation. fuel and air will mix better under pressure but other design changes are required to deliver it in such a short time compared to port injection.

[@jimmesc]

By premixing the a/f mixture, it is compressed on the compression stroke. When using a high compression ratio pre-ignition (detonation, knock, pinging) occurs. Higher compression equals higher efficiency. So by injecting fuel near the top of the compression stroke higher compression can be used, pre-ignition is reduced, and efficiency should be increased.

[@dansorescu5720]

so that s why the 528 i f10 engine is so loud?

[@chinchy111]

in other words 1/4 of all cars are becoming less reliable. multi port fuel injection will always be more reliable than direct injection

[@Pertamax7-HD]

nice sir,,, nice animation, nice euro 6

[@no1555llo]

what if gets dirty ? how to clean them ? and also what if the fuel filter fail to filter and it gets clogged

[@13anomalous16]

I watched this now I feel like a genius.

[@cameronjansz88]

god damn that is smart keeping the intake and exhaust open to decrease turbo lag. Where can i buy this engine

[@cascadehopsrule]

but the farming industry and military dont use GDI engines. So whats the point of reducing emissions?

[@dailyvlogs1082]

i want to learn how a car initially starts using a key how crankshaft rotates

[@keyurdhungana318]

well.. the key part i don't know but the crankshaft whole is operated by the timing belt.... there are kind of bumps in the shaft... and the bums press the valves and close the valves... when the bumps are not in contact with the valves.. the valves simply push upwards with some kind of spring mechanism or hydraulics mechanism....and the valves open and close the same rate as the speed of pistons in the cylinder... there are many videos too.. you can check them out!!

[@porkypiggieboy]

Cool idea, but I think the car's wheels were moving backwards the whole time.

[@audi07081]

Excellent video!!

[@abhijeetghutepatil2591]

very nice

[@marceloviotto6494]

Bosch Mobility Solutions, congratulations for the development of the full integrated igniton, fuel & oxidazer system. Is there any specific system for flexfuel engines in Brazil, like direct injection of gasoline (26% vol. anydrous ethanol) combined with indirect injection of hydrated ethanol ( 92% wt ethanol + 8% wt water)?

[@boschmobility]

In Brazil, Bosch does not offer any systems in which alcohol is injected into the manifold and flex fuel directly into the combustion chamber in combination.

[@gobloit4473]

at valve over lap wouldn't it be possible for the exhaust to go back up into the intake plenum (manifold)?

[@boschmobility]

John Kerns With Scavenging the intake and exhaust valves are briefly opened simultaneously. This creates a dynamic flow between the intake and exhaust sides of the engine, purges rest gas out of the combustion chamber and increases mass flow in exhaust-gas turbocharger. The increased exhaust gas mass flow and better cylinder charging generates a higher torque at low engine speeds, which counteracts the turbo lag.

[@SammSheperd]

John Kerns I believe the answer is because there is turbo pressure at the intake valves

[@maybach300c]

How did the Hot-Film mass air flow sensor know every cylinder gets the even air (every cylinder getting the even air) ?

[@boschmobility]

maybach300c The HFM measures the air mass in the air intake tract. The sensor element consists of a heated sensor membrane over which the intake air flows. Here’s the link to the product data sheet, where you can find out more: products.bosch-mobility-solutions.com/media/en/ubk_europe/db_application/downloads/pdf/antrieb/de_5/gs_datenblatt_heissfilm_luftmassenmesser_de.pdf

[@AutomobileEngineer36]

fuels(liquid fuels) cannot be compressed it can only pressurized. And only gasses can be compressed.

[@christopherbell7159]

So range rover have Bosch is it normal to have a knocking sound in the p38 any answers

[@boschmobility]

Thanks for your question but we're not able to make any statement about this. Therefore, please directly contact the respective manufacturer. Thanks.

[@ready4anyting]

Bosch Mobility Solutions Global I really liked the part where it says: mso-tstyle-rowband

[@Calthecool]

You sold me on the animation alone.

[@bekerismael3238]

very nice explain

[@ew10j4turbo]

Start investing in no smoke engines!

[@srikanthk5605]

Beautiful graphics, Bosch make an animation movie 🤗

[@jerziballer24]

Crazy nice graphics

[@Sergiopt96]

Brilliant video

[@MrNaveenbalan]

thanks for this video ...

[@gabrielwong1991]

why not hcci and isnt this equiv to common rail diesel without self ignite?

[@BadAtThis420]

I would love to have this system in my 1966 Volkswagen. Dayumn

[@spartelite1]

This is awesome!

[@PeterFeederHQ]

Damn the animation is fucking flawless. I want to learn how to do that!

[@AutOdometer]

This is crazy awesome

[@chanakyajha5076]

Wow this video is awesome for all car lovers.. This video really solved my major doubts about cars plzz make more videos I'll be eager to see them

[@boufaresmokhtar5692]

très belle vedeo merci

[@praveenkumarpraveenkumar7449]

dangerous explained by 3d animation, it's nice

[@CelsatBrenergia]

This Technology is high torque.

[@shaniaoliver5422]

Very well explained

[@ankuratulkar8066]

awsum way to xplain,,,,luv it :-)

[@GOONMOTORSPORT]

It's all about electronic sensor and small mechanic change !!!

[@blago6]

Do they fixed valve gunking ??

[@matty1234a1]

We've come a long way from the 454 4 barrel

[@plash7950]

gasoline direct injection gdi is from hyundai right