[Diy_efi] Diesel EFI?

[Green, Yakir]

Mike, Avery, thanks for your comments!!

Here is some more info ...
I am looking for a solution for 80% academic 20% practical reasons.
I live in Israel, and we have a LOT of 2.4L Toyota engines ... they come in a range of cars.
The problem with going with a VW engine is, it's not legal in IL ... Only a Toyota 2.4L is allowed.

I was thinking of using a new model Toyota CRD engine, but then I need the ECU ... and that led me to the MegaSquirt.
Now, diesel injection timing is a lot like sparkplug timing (on Petrol engines), only difference is that some new diesel have more than a single injection trigger during a combustion phase ... which the MegaSquirt probably can't handle.

If I have to take the Toyota ECU, I need most of the Toyota wiring and dash-board ... which means I need to buy a whole new car (After a collision) and gut it ...

Is there any other independent EFI controller that can work with CRD?

Yakir.

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] On Behalf Of Avery Nisbet
Sent: Thursday, November 18, 2010 9:38 PM
To: Mike
Cc: Diy_efi at diy-efi.org
Subject: Re: [Diy_efi] Diesel EFI?

Most of the CRD based systems are Direct injection.  The engine you
have is indirect.  It has a pre-combustion chamber.
This may not be that big of an issue.  The bigger one would be finding
CRD style injectors that fit into your current head.

I don't think megasquirt has been used on a CRD engine yet.  I think
it has been used to control one of the VE pumps that uses feed back
from an ECU based on MAF and O2.

I don't know where you are located but. these small diesels from
Toyota are very hard to come by in the US.  Very little is known about
them here.

Quite a few people use the more available VW TDI engine for swaps into
toyota's and other small pickups.  Quite a bit is known about the VW
bosch based ECU's both Gas and Diesel.  This might make for a more
forgiving project.

-Avery

On Thu, Nov 18, 2010 at 7:03 AM, Mike <niche at iinet.net.au> wrote:
> Hi and welcome to the group,
>
> I'm not sure what you are trying to achieve overall:-
>
> a. Experience with EFI in general ?
> or
> b. Improve performance and economy ?
>
> or a combination of both - which is more important to you ?
>
> Each of these come with a price and a time versus capital cost issue,
>
> My electronic engineering thesis in 1982 was EFI with integrated transmission control
> and that was pretty ambitious at the time, the university's (max) $50 subsidy was exceeded
> by $1150 and although I managed to get a console running it fell short of expectations
> after 18 months.
>
> Now I have more experience in things like time management etc, I wouldnt want to tackle
> converting a mechanical diesel system to electronic - if you do want to do it, will the outcome
> be justified in terms of time and cost ? The hardware for the high pressures diesel operate
> under is not trivial. If you are looking to improve efficiency and perhaps alter the fuel source
> to perhaps use biodiesel then it would still be mostly an educational exercise. The nature of
> a (mechanical) diesel allows it to accommodate a wide range of fuels provided the cetane
> rating is comparable to the engine design criteria.
>
> Water injection is being used successfully to improve diesel efficiency and reduce peak
> bearing loads but a sizable amount of water is necessary, propane injection in conjunction
> with diesel is also being trialled to ameliorate some diesel deficiencies.
>
> But I wouldnt be keen on the complexities and possible dangers of changing mechanical
> injection to electronic injection - can you get injectors and pumps for that sort of pressure
> at a reasonable price ?
>
> Although we have concerns about long term petroleum supplies, petrol and alcohol will
> still be around for at least a couple of decades at a price that is still *today* lower than it
> was in real terms than the 1975 energy crisis... ?In any case liquid fuels will be around
> for a long time to come, ie After petrol, then alcohol, LPG etc As the energy delivery
> infrastructure is vast and not likely to shift that quickly to CNG or LPG, especially so,
> since other forms of liquid fuel are coming on stream...
>
> So some idea of your expected outcome and why you are going down that path would be of interest ?
>
> Regards
>
> Mike
>
>
>
> At 08:10 PM 11/18/2010, you wrote:
>
>
>>Guys, this is my first post to this list!
>>
>>I have been reading most of it for a couple of years now ?
>>I have an old Toyota Diesel truck so I was unable to work on an EFI project (it has the mechanical injection pump).
>>
>>Recently I was thinking about 2 options, one is changing the pump to a common rail setup, and then put in an EFI system that controls the Injectors.
>>2nd option is getting a new Toyota D4D engine (without the ECU) and adding an EFI system to it.
>>
>>I was thinking about MegaSquirt, as the last V3 is supposed to be able to provide sequential Injector signal ? Is it enough for a Diesel?
>>
>>I would appreciate any comment on the subject!
>>
>>Thanks,
>>
>>Yakir Green
>>
>>---------------------------------------------------------------------
>>A member of the Intel Corporation group of companies
>>
>>This e-mail and any attachments may contain confidential material for
>>the sole use of the intended recipient(s). Any review or distribution
>>by others is strictly prohibited. If you are not the intended
>>recipient, please contact the sender and delete all copies.
>>_______________________________________________
>>Diy_efi mailing list
>>Diy_efi at diy-efi.org
>>http://lists.diy-efi.org/mailman/listinfo/diy_efi
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
>
_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://lists.diy-efi.org/mailman/listinfo/diy_efi
---------------------------------------------------------------------
A member of the Intel Corporation group of companies

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.