System and method for measuring brake mean effective...

Details System and method for measuring brake mean effective... System and method for measuring brake mean effective...

2005-04-12

2005-04-12

McCall, Eric S. (Department: 2855)

Measuring and testing

Vehicle chassis

Steering

C073S115060

Reexamination Certificate

active

06877367

ABSTRACT:
The present invention provides a method for easily measuring a brake mean effective pressure of a running vehicle. An air flow sensor, a λ sensor and a data collecting apparatus are mounted to the vehicle. A running speed and engine speed from the vehicle while actually running on a road surface, and output of the air flow sensor an the λ sensor are inputted to the data collecting apparatus. Specific fuel consumption is obtained from an intake air amount and ratio of excessive air in exhaust gas. Output of an engine is obtained from a relation between the specific fuel consumption and the engine speed.

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