Horse Power and its Effectiveness

[Pat Ford]

Previously, you (Greg Hermann) wrote:
{ >At 09:16 PM 12/13/1999 -0500, you wrote:
{ >>A few comments:
{ >>
{
{ >>Diesel engines make less torque than gas engines (naturally aspirated).
{ >>Their advantage is the BMEP is not limited by detonation so they can take
{ >>gobs of boost.
{ >
{ >Since when do they make less torque?
{ 
{ Since forever. Because a diesel cycle at full throttle is not as efficient
{ as an Otto cycle at full throttle for equal compression ratios.

 I'd love to see a 24:1 ratio Otto

{ 
{ >The cummins 5.4L I6 makes 650 lb/ft in full trim at 1800 RPM.  Tuned down
{ >for Dodge, It makes 400 Lb/ft at 1800 RPM...  Would love to see a gas I6
{ >5.4L engine do that!
{ 
{ Would love to see the Cummins 6BT do that without the "T"!! Gary DID say
{ "NA", I think!
{ 
{ Guess why there are NO piston engined aircraft that use the diesel cycle??

weight?

{ 
{ Greg
{ 
{ 

--
Pat Ford                           email: pford at qnx.com
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