Gasoline Automotive applications continually & freely vent any tank overpressure through a carbon filled scrubber canister, without a 'shut off valve' (except when used for tank leak diagnosis).
This means Ptank = Pambient and, all the while the canister can hold fuel vapour, there is no HC...
In a modern gasoline engine, in the condition you describe.
With 0% Pedal you are in idle speed control, whereby instead of a desired torque by the driver a desired engine speed is maintained, by a varying torque.
The torque is split into two parts - slow (air) & fast (spark) whilst lambda=1...
Pickler,
I'm not sure if I am missing something but BSFC is not generally measured transienttly. It is a figure that is quoted from steady state testing and involves the use of fuel weighers of some other means of accurately measuring fuel consumption.
I think that I know what you are trying...
What dreadful news, I have never met Pat - in fact I know very little about the man yet, having been a member of this forum since 2001 I have 'known' him for a long while.
Very knowledgeable & wise chap who will be missed.
Thanks rmw for informing us.
Sleep well Pat & this forum just wont be...
Correctly calibrated Ether Assisted Start can & will start a CR DI Diesel engine to temps lower than the lowest recorded ambient on Earth - However, as Pat correctly points out the scope for damage on an incorrectly calibrated start is pretty spectacular.
However, if it were my engine I would...
Correctly calibrated Ether Assisted Start can & will start a CR DI Diesel engine to temps lower than the lowest recorded ambient on Earth - However, as Pat correctly points out the scope for damage on an incorrectly calibrated start is pretty spectacular.
However, if it were my engine I would...
Interesting point Steve, I wouldn't have thought of NVH working their black art in this sort of condition. I guess a motored dyno would be better?
Even still, a helmet is only going to save so much......
Another thing for me is that, bar a few exceptions, gasoline engines only have a low idle...
Testing at 'no load' conditions makes absolutely no sense to me.
Even when doing work at idle PAS/AC/Generator loading rigs are used, to give representative conditions ie zero clutch torque with significant accessory loads.
If you decide to continue you really must ensure that...
Hypnotist
It really depends on what you are trying to measure?
A standard Binary Sensor (Heated Exhaust Gas Oxygen Sensor) will tell you if you are Rich/Lean of stoich by the voltage it flows and if this is sufficient you could make something very cheaply.
Whereas a Wideband Universal HEGO...
Gordon,
I think that Tony has it covered but, in a nutshell: -
The 'Effective Injection Pulsewidth' is the time that the injector is held open, during which fuel flows at the static flow rate at that condition [F=(dp over injector tip, rated flowrate of injector)]
As the injector driver goes...
It's a small world!
As far I know Malcolm is still a Big Cheese on the engine side with Jaguar, don't know about Ralph but heard he went to Caterham.
Both very clever guys but polar opposites on the 'driven' front!
MS
My experiecne of Lotus (both Cars & Engineering) where back in the days of Malcolm Sandford, Gary Reid, Rupert Bailey etc. Some very, very clever guys that seemed to run matters well but were almost starved of anything exciting & profitable to.
From a powertrain point of view, Engineering had...
Just a quick refresh of the main fundamental difference between a gasoline SI engine and a diesel CI engine which is, quite obviously, the combustion process.
Within an SI engine, operating under normal conditions, the sequence is: -
Mixture Formation - Combustion Initiation - Kernel Formation...
