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How do Diesel fuel injectors work? Piezo common rail diesel fuel injector operation explained
Diesel Piezo fuel injector animation with explanation of how it works. In this animation I talk about how these Diesel fuel injectors work and the number of pre and post injections.
These injectors typically operate between 1600 bar and 2700 bar depending on engine and high pressure fuel pump. The Bosch Piezo injector injects into the cylinder the amount of fuel required for economical combustion, independent of the driving situation.
The third-generation high-performance piezo injectors enable a high degree of freedom when designing the injection characteristic and allow up to ten individual injections per injection cycle. up to 2,700 bar pressure for very high motor performance with low consumption low fuel consumption and reduced emissions are made possible through extremely short injection intervals. up to ten individual injections per injection cycle for quiet and highly efficient combustion.
The injector is permanently supplied with fuel from the rail via the high-pressure connection. The injection process is initiated by the control unit via the electrical connection. The return flow quantities arising during the injection process flow back to the tank via the fuel-return line.
Piezo injectors made by Bosch are available for pressure levels between 2,000 bar and 2,700 bar. They are used for the premium car segment and in light duty vehicles. The injectors have a modular construction and can be adapted to the customer's needs. The variants tailor-made for each application scenario differentiate themselves with regard to, for example, lifetime, nozzle design, and injector length.
As the piezo actuator is integrated in the housing, the injectors are significantly slimmer than solenoid valve injectors and thus require much less installation space.
Thanks to their robust piezo principle, the injectors are well prepared for different fuel qualities. The rapidly switching CRI3 piezo injector allows short injection intervals which inject into the cylinder the amount of fuel required for economical combustion, independent of the driving situation.
Up to ten individual injections are possible per injection cycle. In addition, the injection process can be designed with high flexibility. Using multiple injections, the engine's fuel consumption and CO₂, pollutant, and noise emissions can be reduced. Control is via a piezo actuator made of several hundred layers of a piezo ceramic. The ceramic expands by a few thousandths of a millimeter as soon as voltage is applied, setting the jet needle in motion. This coupling of actuator and nozzle needle enables the very short reaction times and very small preinjection quantities.
#diesel #fuelinjector #howitworks #piezo #piezoinjector #piezoelectric #piezocrystal #commonrail #dieselengine #tdi #vw #audio #mercedes #injector #dieselinjector #solenoid #commonraildiesel #crd #sdi #gdi #gtd
zhlédnutí: 1 850

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Komentáře

  • @xjonasxv
    @xjonasxv Před dnem

    Best video on the FULL explanation of adblue. Thank you so much. Inwas wondering if the adblue tank was crystallised because the line was empty. Now i know that it is pumped back in the tank.

  • @averysimer5601
    @averysimer5601 Před 2 dny

    My 2005 base’s duration is 30 minutes with the engine off

  • @michaeljones701
    @michaeljones701 Před 2 dny

    Good explanation, perfect thanks!

  • @nazlavux2671
    @nazlavux2671 Před 6 dny

    Thank you for your time my bro appreciate you

  • @-MrRichBiker1967
    @-MrRichBiker1967 Před 17 dny

    Great video Thank you for taking the time... but I'm sorry ,you clear your throat more than a blink. 😮 Yikes!!!!

  • @EfficientMan
    @EfficientMan Před 22 dny

    One of these things that take time to grasp, especially when there is a shaft in another shaft, the difficult thing to understand was what is happening with the pre selected gears' shaft, I guess it continues turning freely on the other shaft, and the gears somehow are attached to inner shaft without affecting the outer.

  • @gottliebdee263
    @gottliebdee263 Před 23 dny

    Would STRONGLY advise using on gravel. Yes you were Ok here but it doesn't make sense to do it one a surface that isn't level and solid. There may be a soft spot that didn't show up when the weight was spread previously. But thanks.

  • @PeteLeaney
    @PeteLeaney Před 23 dny

    Great video, but snipe nosed pliers get the clips out … And when you put the clips back in the trim put some tiger seal on them so they don’t slip out…. Trust me one doesn’t go on and pops off drives you mad hearing it rattling about in the boot skin. Overall a simple job . And satisfying not getting that annoying “center light fault” pop up every time you drive a couple of leds out..

  • @bardslee
    @bardslee Před 27 dny

    so add blue could be piss but isn't?

  • @raymondrocan8912
    @raymondrocan8912 Před měsícem

    Very useful; thank you very much. Couldn't have done it without it.

  • @ianpeach1352
    @ianpeach1352 Před měsícem

    What is reliability like on this one/any others that you’ve had

    • @GarageTechAutomotive
      @GarageTechAutomotive Před měsícem

      @@ianpeach1352 I never had any issues on any of the Land rovers or Jags that I had apart from one Disco 2018 which had balance shafts replaced under warranty because they were noisy. Apart from that, all ok. Maybe I was lucky 😅

  • @gazzagazza9552
    @gazzagazza9552 Před měsícem

    You didn't use stud lock.noticed you mentioned copper slip,also would have been a lot easier to remove handrake cable by removing clip and unhooking.brake pipe are easily damaged.

  • @jameswoodson3137
    @jameswoodson3137 Před měsícem

    Great vid. Tight spot but great camera angles.

  • @mythiousmom578
    @mythiousmom578 Před měsícem

    Looking Naja giraffe😂

  • @lifutian811
    @lifutian811 Před měsícem

    thank u very much ,love from china boy. wish i own a 987.2 in 2025

  • @IIIRAYDENIII
    @IIIRAYDENIII Před měsícem

    And then came the new "under the car" design... 🙄

  • @PointMicrosoft
    @PointMicrosoft Před měsícem

    Anyone try it for Mercedes oem ones?

  • @ChristianEssentials101
    @ChristianEssentials101 Před měsícem

    Great explanation and animation.

  • @panchos7368
    @panchos7368 Před měsícem

    Thanks! Very helpful

  • @AnthonyMUmana
    @AnthonyMUmana Před měsícem

    The best video. Thanks

  • @HigusFiseha-fo7ug
    @HigusFiseha-fo7ug Před měsícem

    Every illustration you did is such amazing ,you are brilliant man.

  • @chony07pr
    @chony07pr Před měsícem

    How relaible is compare to steel?

  • @sfdede8372
    @sfdede8372 Před měsícem

    thank you for this video!

  • @llisagomez5706
    @llisagomez5706 Před měsícem

    They Think because they say it with a British accent that it's a good thing. It's a bunch of bullshit. You can't find charges anywhere. It takes eight hours to charge this car level two charges are nowhere to be found.

  • @tevinmouton
    @tevinmouton Před měsícem

    This just helped me so much with trying to figure out what is going on with my Car’s A/C

  • @MrRaptor35
    @MrRaptor35 Před měsícem

    Mine just says engine level measuring now.. does the engine have to be warm

  • @MowSow
    @MowSow Před měsícem

    Any video talking about a pre purchase inspection that doesn’t mention bore score, is a useless video in my book. Both 987.1 and .2 are at high risk of developing bore score, people think that 987.2 is immune to bore score, but they are delusional, it’s just taking .2 cars longer to reach their failure point because they are newer. The only cars which are relatively immune to bore score are the base models because they have forged pistons, and produce less heat in general. The rest of the items are pretty easy cheap to fix, there are after market cable ends, to replace the worn ones, I’ve done them and I have 400,000km on my car’s original cables. They will NOT easily break if you’re not brutal with them. The half shafts have an issue with rust for sure, I’ve replaced inner and outer x4 boots twice. One half shaft wore on the inside and replaced it with a used one. They last a very long time there’s no point of spending $1500 on a new one. The AOS is a DYI that cost under $100. I would do it preemptively every 100,000 km. My advice NEVER buy these cars without scoping all 6 cylinders for scoring.

  • @user-ni3bw1mf2y
    @user-ni3bw1mf2y Před měsícem

    what the best,, VVT or VGT??

  • @AJ_9202
    @AJ_9202 Před měsícem

    Does the high pressure liquid freon turn into gas once it passes through the expansion valve or the evaporator?😊

  • @Don_Eilenberger
    @Don_Eilenberger Před měsícem

    Uhhh... my 987.2 has aluminum trunk lids (frunk and trunk) - it's not all steel.

  • @AndrewEvans-us6mv
    @AndrewEvans-us6mv Před měsícem

    Niceone ❤️💛💚💥✌🏻👊🏻

  • @rambdrgurung2679
    @rambdrgurung2679 Před měsícem

    How much do u know.

  • @peoplehear
    @peoplehear Před měsícem

    What timer software is that as my stopwatch passed the 30 second mark??

  • @damma5343
    @damma5343 Před měsícem

    The Audi dealer puts 0w30 oil in , should i do it to with 0w30 or put in 5w30???

    • @GarageTechAutomotive
      @GarageTechAutomotive Před měsícem

      0w30 is a better grade oil. Best to put in what’s recommended 👍🏼

    • @damma5343
      @damma5343 Před měsícem

      @@GarageTechAutomotive it can both 5w30 or 0w30. I just bought the car but saw that they always serviced it with 0w30

  • @TheLondonCyclist
    @TheLondonCyclist Před měsícem

    Hello, mate... I'm having a problem eith pressure leakinf through the cap on the reservoir. Ive tightened it to the point I feel if I go anymore, i might damage the reservoir container. Any tips? did you hsve to tighten it extremely hard?

    • @GarageTechAutomotive
      @GarageTechAutomotive Před měsícem

      No should be ok, just check if there’s a seal on the cap, can’t remember if there is one but worth a check. Also have you got the right adapter cap, the one I have is suitable for most German cars

    • @TheLondonCyclist
      @TheLondonCyclist Před měsícem

      @@GarageTechAutomotive I have a 2018 Mazda 3 and turns out I need the 3 tab cap adapter. Damn. I'm gonna start looking.

    • @GarageTechAutomotive
      @GarageTechAutomotive Před měsícem

      @@TheLondonCyclist that will be why then, you can get it on Amazon, there’s two different universal adapters, ones better than the other, best to check how much room you have as the cheaper one is a bit of a faff. Just search Sealey Vs820Ua and Sealey VS0204UA 👍🏼

  • @budantk6947
    @budantk6947 Před měsícem

    Thanks a lot with your explanation it really helped me.. Please tell me how can I get the program you’re using?

  • @SamDaviesBuilder
    @SamDaviesBuilder Před 2 měsíci

    Thanks for this video, simplified and straight to the point

  • @oRoamr
    @oRoamr Před 2 měsíci

    how can you change the beams to leds?

  • @martindempsey8555
    @martindempsey8555 Před 2 měsíci

    Fucking useless shite, I hate servicing any car with a digital dipstick they are the stupidest idea in the world

  • @TheLondonCyclist
    @TheLondonCyclist Před 2 měsíci

    I like the tip of putting fluid through before tightening the cap on the fluid reserve. Cheers

  • @timbunker4529
    @timbunker4529 Před 2 měsíci

    I've used the one which works off tyre pressure, useless. This looks better.

  • @Amilnes78
    @Amilnes78 Před 2 měsíci

    This is why i always take off my valve covers and fill the engine with oil after i fill the oil pan. Need that little extra lubrication

  • @skellingtonmusic170
    @skellingtonmusic170 Před 2 měsíci

    If the check engine light goes away, comes back after a while what could it possibly be?

    • @GarageTechAutomotive
      @GarageTechAutomotive Před 2 měsíci

      Probably an intermittent fault, sensor on its way out. Or an issue with the wiring, loose connection, water/corrosion.

    • @skellingtonmusic170
      @skellingtonmusic170 Před 2 měsíci

      @GarageTechAutomotive sorry I meant to add that I have a P0118, I had it initially maybe a year or so ago, I replaced the ect sensor, got rid of that but just came up again maybe 2 weeks ago. Going to assume the part itself shouldn't go out that fast and check the wiring...

  • @AndrewEvans-us6mv
    @AndrewEvans-us6mv Před 2 měsíci

    Thanks 🙏🏼

  • @scottwebber705
    @scottwebber705 Před 2 měsíci

    Why is my boost air so hot ?

    • @GarageTechAutomotive
      @GarageTechAutomotive Před 2 měsíci

      Hey, is this a problem with your car or just a general question on what causes the boost air to be hot. As the turbo is connected to the exhaust naturally there’s heat transfer. Secondly, when you compress air it heats up, hence why it’s common to have an intercooler.

  • @sockself
    @sockself Před 2 měsíci

    would a geared turbo be a better solution if possible in cars? I know jet engines have geared turbofans that obviously work on different mechanisms, but seem to be the best solution for jets. Is it just complexity holding it back from cars or is there something else?

    • @GarageTechAutomotive
      @GarageTechAutomotive Před 2 měsíci

      Suspect it would be the turbo lag or just general complexity. Probably why they have sequential turbos with one small and one big.

  • @DavidTYork
    @DavidTYork Před 2 měsíci

    As an aside - is the IPD any good on the 3.4 DFI?

    • @GarageTechAutomotive
      @GarageTechAutomotive Před 2 měsíci

      Hey, you do notice a change in the throttle response and a deeper induction noise. As for performance, apparently they do add a “few”BHP, I can’t confirm as never tested but as with all these types of mods, it always feels a bit faster but that can be just the placebo effect 😂

    • @DavidTYork
      @DavidTYork Před 2 měsíci

      @@GarageTechAutomotive Thanks for taking the time to respond 🙂

  • @kingGar27
    @kingGar27 Před 2 měsíci

    Excellent video. Never knew how these two injectors work. Would be good to do something on PD injectors too.

    • @svandore10
      @svandore10 Před 2 měsíci

      I assume you meant pumpe-duse they are basically solenoid injectors but the fuel pressure is made by lobes on camshaft on each injector

  • @lyndenblades
    @lyndenblades Před 2 měsíci

    Thank you for your help. Completely unintuitive, would be super difficult to work it out for yourself!

  • @PushyPawn
    @PushyPawn Před 2 měsíci

    0:36 The oil is going backwards through the oil filter.