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Prius C / Yaris Hybrid - Engine Pics

Discussion in 'Prius c Technical Discussion' started by Kingsway, Apr 8, 2018.

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  1. Kingsway

    Kingsway Active Member

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    A set of pictures of the 1NZ-FE engine which I hope may be of interest,,,

    engine-front.png engine-front-end.png engine-FW-end.png engine-rear.JPG engine-rear-top.png
     
    #1 Kingsway, Apr 8, 2018
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  2. priusCpilot

    priusCpilot Active Member

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    Crack her open and lets see inside.
     
    #2 priusCpilot, Apr 12, 2018
  3. Kingsway

    Kingsway Active Member

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    It's not mine - just pics from a car-breakers website!
     
    #3 Kingsway, Apr 12, 2018
  4. Kingsway

    Kingsway Active Member

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    Did you notice, the PCV hoses, into and out of the cylindrical oil separator, are well insulated, to keep the gases hot? A lot of folk who are installing catch-cans are collecting a lot more condensed water than they are oil. I much rather have pure water vapour going into the inlet tract than dirty water, once it has been condensed and accumulated to a level where it might get sucked straight into the cylinders. Vapour is at least compressible....
     
    #4 Kingsway, Apr 12, 2018
  5. Kingsway

    Kingsway Active Member

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    Another view of the front of the engine - with inlet manifold and water pump removed. Unfortunately, it's not at all clear where the oil is returned to the sump by the PCV oil separator. A possibility is marked ??

    front-sans-manifold.png
    Come to think of it - I may be quite wrong... Maybe there is no return to the sump, but the 'separator canister' is heated by engine coolant!! Too hard to see for sure without taking things to bits... maybe it's not even a separator - could be just a heat exchanger to warm up the gases coming from the PCV valve??
     
    #5 Kingsway, Apr 13, 2018
    Last edited: Apr 13, 2018
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  6. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Thanks for those, interesting. The EGR location looks easier to get at, once the cowl is off I'd assume.
     
    #6 Mendel Leisk, Apr 13, 2018
  7. Kingsway

    Kingsway Active Member

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    Very easy - The only thing you need to remove, for access, is the push-on grey plastic engine cover, which just pulls off!

    engine-bay.jpg
     
    #7 Kingsway, Apr 13, 2018
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  8. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Is it just me, or is that cover on back to front? Strange, that Toyota text is upside down.
     
    #8 Mendel Leisk, Apr 13, 2018
  9. Kingsway

    Kingsway Active Member

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    nah - can only go on one way. It has the Toyota Logo and the word 'Hybrid'
     
    #9 Kingsway, Apr 13, 2018
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  10. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Oh, you're right. Shooting from the hip again, lol.
     
    #10 Mendel Leisk, Apr 13, 2018
  11. Kingsway

    Kingsway Active Member

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    #11 Kingsway, Apr 13, 2018
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  12. Kingsway

    Kingsway Active Member

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    #12 Kingsway, Apr 16, 2018
  13. Kingsway

    Kingsway Active Member

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    The 'cylindrical oil-separator' I mentioned earlier is nothing of the sort! (The cylindrical heat exchanger on the right-and side of the engine) It's simply a cooler/warmer for the PCV gasses .
     
    #13 Kingsway, Nov 29, 2021
  14. ChapmanF

    ChapmanF Senior Member

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    I was just thinking that. I would love to see what the New Car Features manual has to say about it.

    I'm still kind of fond of the ol' 1NZ. Not so much the totally-impractical-to-adjust-valves part. That part isn't perfect.
     
    #14 ChapmanF, Nov 29, 2021
  15. Kingsway

    Kingsway Active Member

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    For some reason, I had always assumed the EGR cooler would aid warm-up by adding heat to the coolant until the engine came up to running temperature. Today I tried a new (to me) scanner app https://www.carscanner.info/ (Highly recommend) Which allowed me to see the EGR valve in operation - it only begins to work once car is at operating temp.!
     
    #15 Kingsway, Nov 29, 2021
  16. ChapmanF

    ChapmanF Senior Member

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    Yeah, for whatever reason, people very often confuse the purpose of the EGR system and the Exhaust Heat Recirculation System. They have completely different purposes. Like the Gen 3 liftback, your c has both. The EHRS heat exchanger is well under the car on the exhaust pipe, after both catalytic converters. Just follow the coolant hoses, can't miss it. :)
     
    #16 ChapmanF, Nov 29, 2021
  17. Kingsway

    Kingsway Active Member

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    Actually, no. The Yaris Hybrid, as sold in Europe doesn't have an EHRS system. It also has rear disc-brakes, and a quite different - and less Prius-like instrument panel. Otherwise, though, very much the same basic car. (differently styled rear-end too.)
     
    #17 Kingsway, Nov 29, 2021
  18. ChapmanF

    ChapmanF Senior Member

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    Ok, that's fair; I saw "2014 Prius c" in your profile, and I did look up the EHRS system for it before posting, but I looked it up on the US parts site.
     
    #18 ChapmanF, Nov 29, 2021
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