How can i detune a peugeot 1.7d xud??

[rich201283]

How can i detune a peugeot 1.7d xud??

 

[Bilgediver]

How can i detune a peugeot 1.7d xud??

Explain more!!!!!

What are you trying to achieve? If detuned then emmissions will go to hell
however it is easy to reduce its power output which is another matter.

 

[rich201283]

hi
thats what i mean i would like to reduce the power.

 

[davidej]

A very general question if you don't say how you propose to use the engine but the normal way to get more power is to improve the engines 'breathing'. To do the reverse, you could restrict either or both of the inlet and exhaust system.
Anyway you will seriously impair effeciency and thus probably fuel consumption and emissions.

 

[sea]

Tuned engines are more economical in lots of cases. The St Johns Ambulance have been tuning their's locally

 

[David2452]

hi
thats what i mean i would like to reduce the power.

Don't open the throttle so far, that works for me when i want less power.

 

[VicS]

Don't restrict the air or it will smoke.

Limiting the throttle movement may achieve what you require also perhaps adjusting the max speed on the injector pump.

Interfering with the injector pump settings is a job that i feel would be best left to a qualified diesel mechanic.

 

[Sans Bateau]

Dangerous as it is, I'm going to assume that the engine is to be used in a boat.

First a question, why would you want to depower? If depowering is essential, then the simplest method has already been suggested, reduce the throttle. But if some mechanical restriction is needed, then changing gear ratios, or prop size may have a desired effect.

 

[DownWest]

On that type of engine the throttle controls revs i.e. max power. So as said, screw in the stop. If you want less power at the same revs (not sure why) then gears or prop alterations can do it. Bit more info?
A

 

[TQA]

On that type of engine the throttle controls revs i.e. max power. A

Errr not quite right. A diesel engine has a governor on the injector pump to control maximum RPM. The injector pump will also have a system for limiting the maximum amount of FUEL that can be injected on each power stroke. You can easily control the amount of POWER a diesel can produce by varying this setting. It will still have the same maimum RPM but as the torque is greater or is reduced the Brake Horse Power is greater or reduced.

Overfueling a diesel in this way produces lots of black smoke but around a 30% power increase is attainable with many diesels.

We did this in the lab on a regular basis with students but never on Monday. [ Washday]

So to answer the original posters question get a diesel injector pump shop to reset the maximum fuel stop to a lower level and you will have less power with the same RPM limit. Exhaust emissions will almost certainly be reduced at or near max rpm - this is when diesels get dirty.

 

[scottie]

you can do a lot with propeller sellection

 

[jason -and the arguenauts]

So to answer the original posters question get a diesel injector pump shop to reset the maximum fuel stop to a lower level and you will have less power with the same RPM limit. .

Is this the same as the stop on the throttle linkage?

 

[Bilgediver]

Is this the same as the stop on the throttle linkage?

Yes and the poster hasn t thought about his reply before posting




GDARFC

 

[misterg]

Is this the same as the stop on the throttle linkage?

Yes and the poster hasn t thought about his reply before posting

GDARFC

Err.. Provided the engine in question has a mechanical injector pump, I would say "No", and would agree with TQA's reply.

Throttle linkage sets speed on diesels. Governor determines fuel, up to the max fuel limit.

Please explain if I've fallen into some trap or other

Andy

 

[tinkicker0]

Err.. Provided the engine in question has a mechanical injector pump, I would say "No", and would agree with TQA's reply.

Throttle linkage sets speed on diesels. Governor determines fuel, up to the max fuel limit.

Please explain if I've fallen into some trap or other

Andy

If its a rotary pump, the governer controls all speeds / fuel metering not just maximum revs.
All the fuel lever does is tell the governer what you want to happen.

Max fuel on many rotary pumps is set by means of adjusting a plate with eccentric slots in em that acts on shoes that the plunger elements sit on, On these type pumps, the only way to alter the max fuel setting is by using this to limit the plunger element stroke. A job for the pump calibration machine.

Some other types have an external adjustment screw for hydraulic governers and a fuel lever travel limiter screw.

Impossible to give the definative answer as no one knows what type of pump it is and all i'm doing is spouting knowledge learned at college in the early 80s and last used in the early 90s.

Seek out your local pump shop, give them the details off the pump data plate and they will advise you far better than anyone here can. You may have to change your injectors to a different type / setting as well as have the pump recalibrated though.

Alternatively, a couple of 3/8ths ball bearings dropped down the intake manifold would do the trick, albeit a little violently.

 

[TQA]

OOPS Bilgediver is correct in part. It would depend on the type of governor fitted. Max Min or constant speed. It is twenty years since I taught this. However I am pretty sure Max Min governors are rare nowadays. Restricting the throttle movement on a constant speed set up would not reduce the power the engine could produce at that restricted rpm.

The way to do that is to reduce the max fuel delivery.

 

[NorthUp]

Don't overcomplicate it

just limit the maximum revs the engine can do under load (ie in gear, boat free running) with the maximum speed lever- thats good enough for the the MCA fishing boat surveyors when an engine is officially derated for license purposes.
The engine manufacturer will publish a graph of revs v. max power output, just pick your spot.

 

[Heckler]

How can i detune a peugeot 1.7d xud??

Peeps should have asked why do you want to limit the power. Then they could answer the question. But if you are fitting it in a boat, it then it begs the question why instead of a marine diesel, then if the answer is cost, then most of the answers, ie messing with injector pumps on a test rig negates the savings.
If you worried about the engine being too big for the boat in terms of output then dont open the throttle, as siggested by others!!
Stu

 

[Juggler7823]

If you worried about the engine being too big for the boat in terms of output then dont open the throttle, as siggested by others!!
Stu

With respect Stu, not opening the throttle is not a good solution. You end up with a very limited range of throttle to use. In my case, with a 55hp in a 12m, 8.8t sailing boat, at 800rpm idling it does 2.5 to 3kts, 1500rpm 6kts, 2000rpm 7.5kts. With more power at idling I would be doing 4 to 5kts and hull speed at somewhere near 1200 to 1500rpm. You have to loose power somewhere else and it will become uneconomical.

I am not that familiar car car diesels but is not the xud a turbo. If so removing the turbo would reduce the power considerably. There's probably some reason why this can't be done easily (different head?) but it seems the way forward to me. In a marine environment, I do not like the idea of adding turbos to the 2003 or 2030 to give the extra 10hp of the 2003T or 2040
Roy

 

[Bobobolinsky]

Defo need more info. Unless the engine is being used as ballast, get a 1500cc Isuzu or a Kubota 822cc

Robin