Holden Engine Efficiency

[Kiddo]

What do you have to contribute to the OP Mr Superhelpfulness?

Woah woah woah. Don't bring me into this.

 

[Pollushon]

I've found the PFF test to be a great gauge of engine efficiency, which unabbreviated is known as: Passenger Fear Factor.

This can range from a simple flinch, to a girlish shriek with arse pucker to the higher end of the scale resulting in the smell of faecal matter in the cabin and knuckle anaemia.

 

[Decicrate]

Woot 18.94

 

[Cheap6]

I can't see it, take the buick V6 for example, bump the compression ratio up and up go the numbers.

Same with the cam, put a bigger cam in it to raise the redline (we are not changing the design of the motor) and up go the figures.

If you alter the cam timing such that the peak torque is produced at a higher rpm you can both increase power and reduce the BMEP at peak torque. The higher friction associated with the higher engine speed where charge is best trapped in the cylinder will result in decreased peak torque but when multiplied by rpm the power figure can still be higher.

If you improve the breathing efficiency of the engine, as might be possible with a higher cam lift, then you might improve both BMEP (at peak torque) and power at the same time

How does the average joe find out their hourly fuel consumption at full noise?

Trip meter (l/km) and speed (km/h) and multiply the two numbers?

 

[AirStrike]

Trip meter (l/km) and speed (km/h) and multiply the two numbers?

Wouldn't give you the peak consumption that would be required for the equation.

 

[Cheap6]

Wouldn't give you the peak consumption that would be required for the equation.

It won't give you the power output at whatever engine speed you choose to measure at but you didn't ask for that .

(l/km) X (km/h) = (l/h)

 

[Pollushon]

Well, while you guys discuss which maths formulas to use I'm gonna go squeeze out some horses.

 

[Drawnnite]

better differentiate the equation so we can figure out a more instantaneous L of fuel used for the acceleration part strike.

again.
lets go view pure mathematics, sure theres a formula sitting around somewhere to answer this issue into more depth

 

[Kiddo]

Well, while you guys discuss which maths formulas to use I'm gonna go squeeze out some knuckle babies.

I fixed it for you

 

[Kiddo]

Bored so i did the RB's and SR's

RB20E - 110 kW at 5600 rpm - 11.7
RB20DE - 114 kW at 6400 rpm - 10.6
RB20DET - 157 kW at 6400 rpm - 14.7
RB25DE - 140 kW at 6000 rpm - 11.2
NEO RB25DET - 206 kW at 6400 rpm - 15.4
SR20DE - 126 kW at 6400 rpm - 11.8
SR20DET - 183 kW at 6400 rpm - 17.1


Info is off wiki, so could be utterly wrong.