If it actually worked that way on light duty passenger type engines I would not have sold a single conversion after the first few. All the owners that keep consumption figures report at least a direct substitution of litres of diesel for litres of LPG as pumped, at around 20% average substitution. That is during cruising, not using the extra power unless needed for overtaking etc. The LPG effectively advances the diesel timing, as an accelerant (so I've read). Therefore the enhancement extracts more energy from the diesel than burning by itself. This effect diminishes quickly over 20% substitution (by liquid volume).Quote:
Originally Posted by Dougal
As as a simple test, I converted a Pajero 2.8 turbo and drove it up our local freeway incline at 100km/h in 5th. To keep power output even I engaged the cruise control and watched the EGT. Diesel only ran at 650C, diesel + LPG ran at 625C. I swapped modes 7-8 times to watch for altitude changes (150-550m).
Sorry but I don't have any dyno graphs etc for you to chew on, I just do it because it works as advertised.
BTW LPG sells for around 1/2 the price of diesel, per litre, on average over a year. Cost savings of 10% are normal and expected.
