auto-innovations : Fundamental parameters of an engine

Fundamental parameters of an engine
Part 1/3

Fundamental parameters of an engine, Part 1/3
What is torque ? What is the relationship between torque and power ? How to compare the flexibility and the operating range of two different engines ? What represents the maximum torque and the rpm at which it occurs ? What happens if the engine is exploited at full load below its revs of maximum torque ?
What are the variables which make it possible to calculate the power developed by an engine ?
The first part of this file will guide you step by step towards the comprehension of the fundamental principles which rule the driving characteristics of our cars' engines.

Contents :

Page 1 : Torque and power - theory (1/3),
Page 2 : Torque and power - theory (2/3),
Page 3 : Torque and power - theory (3/3),
Page 4 : Power formulas,
Page 5 : Graphic relation torque-power,
Page 6 : Torque and power - in practice,
Page 7 : Torque rise / backup,
Page 8 : Operating range,
Page 9 : Comparison of the performances,
Page 10 : Power envelope comparison.

Authors : Catherine Annoot-Dionisi and François Dovat .

Publication date : April 2004.

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