What mistake?

来源: Bonbon330S 于 2005-12-07 14:30:09 [] [旧帖] [给我悄悄话] 阅读数 : (472 bytes)
回答: Of Power and Torque 由 Bonbon330S 于 2005-12-07 13:20:45

Let's take a flat stretch of torque curve (e.g. VW's 2.0T between 2k-4k rpm), where Q is constant. In this stretch, P = Q*x. Sure, as your speed V goes up, x goes up, and P goes up. But what about the accelration A? It stays constant because A = P / V = (Q*x) / (Rw/K*x) = Q *(K/Rw), K being gear ratio and Rw being wheel radius. So great, your engine is making more and more power and acceleration stays constant. Is this what you call "directly connected"?

所有跟帖： 

• Actually, A=P/V/m=Q*(K/Rw/m)=constant, -Bonbon330S- ♂ 给 Bonbon330S 发送悄悄话 (84 bytes) () 12/07/2005 postreply 14:34:47

• 回复：What mistake? -ifidonlike- ♂ 给 ifidonlike 发送悄悄话 (1479 bytes) () 12/07/2005 postreply 15:21:22

• 回复：回复：What mistake? -Bonbon330S- ♂ 给 Bonbon330S 发送悄悄话 (1383 bytes) () 12/07/2005 postreply 15:36:51

• Maybe not so obvious to some -ifidonlike- ♂ 给 ifidonlike 发送悄悄话 (1610 bytes) () 12/07/2005 postreply 19:37:08

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