Internal combustion engine with secondary air charging and a...

Details Internal combustion engine with secondary air charging and a... Internal combustion engine with secondary air charging and a...

2005-04-26

2005-04-26

Trieu, Thai-Ba (Department: 3748)

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

C060S290000, C060S289000

Reexamination Certificate

active

06883323

ABSTRACT:
A method and an apparatus for determining the performance of a secondary air charging system for an internal combustion engine in order to determine the amount of secondary air supplied in the secondary air charging system. This is achieved by measuring the heat generated by the compression of the secondary air with temperature sensors. Insofar as the secondary air charging system is powered by a turbine arranged in parallel with the throttle valve in the intake tract, the measured temperature value for the compressor can be compared with a reduction in temperature of the intake air behind the turbine. Reliable information concerning the amount of secondary air supplied can be determined by simple sensors, thereby obviating the need for an air-mass sensor which is expensive to produce and sensitive to contamination.

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