kenre
Mechanical
- May 23, 2005
- 300
Found this info, interesting!
At top engine speed, the exhaust gases escaping from the open headers produce about 800 pounds-force (3.6 kilonewtons) of downforce.
*The engine will consume as much as 22.75 gallons of fuel during warmup, burnout, staging, and the quarter-mile run.
*Compression ratio is about 6.5:1.
*Air is fed to the compressor from throttle butterflies with a maximum area of 65 sq. in. 45.5 Maximum boost, in PSI, produced by the supercharger at wide-open throttle.
*Fuel is injected by a constant flow injection system. There is an engine driven mechanical fuel pump and about 42 fuel nozzles. The pump can flow 92 gallons/minute at 8000 rpm and 500 PSI fuel pressure. In general 10 injectors are placed above the supercharger, 16 in the intake manifold and two per cylinder in the cylinder head.
*Normal ignition timing is 58-65 degrees BTDC. Directly after launch the timing is typically decreased by about 25 degrees for a short time as this gives the tires time to reach their correct shape. The ignition system limits the engine speed to 8400 rpm. The ignition system provides initial 50,000 volts and 1.2 amps. The long duration spark (up to 26 degrees) provides energy of 950 millijoules.
*Power output of these engines is most likely somewhere between 6000 and 8000 hp. This is calculated from performance as these engines aren't tested on a dynamometer. This would suggest a torque output of 5100-6750 Nm (3760-4980 lb-ft) and also a brake mean effective pressure of 80-100 bar.
Ken
At top engine speed, the exhaust gases escaping from the open headers produce about 800 pounds-force (3.6 kilonewtons) of downforce.
*The engine will consume as much as 22.75 gallons of fuel during warmup, burnout, staging, and the quarter-mile run.
*Compression ratio is about 6.5:1.
*Air is fed to the compressor from throttle butterflies with a maximum area of 65 sq. in. 45.5 Maximum boost, in PSI, produced by the supercharger at wide-open throttle.
*Fuel is injected by a constant flow injection system. There is an engine driven mechanical fuel pump and about 42 fuel nozzles. The pump can flow 92 gallons/minute at 8000 rpm and 500 PSI fuel pressure. In general 10 injectors are placed above the supercharger, 16 in the intake manifold and two per cylinder in the cylinder head.
*Normal ignition timing is 58-65 degrees BTDC. Directly after launch the timing is typically decreased by about 25 degrees for a short time as this gives the tires time to reach their correct shape. The ignition system limits the engine speed to 8400 rpm. The ignition system provides initial 50,000 volts and 1.2 amps. The long duration spark (up to 26 degrees) provides energy of 950 millijoules.
*Power output of these engines is most likely somewhere between 6000 and 8000 hp. This is calculated from performance as these engines aren't tested on a dynamometer. This would suggest a torque output of 5100-6750 Nm (3760-4980 lb-ft) and also a brake mean effective pressure of 80-100 bar.
Ken
