Device and method for estimating temperature of exhaust pipe...

Details Device and method for estimating temperature of exhaust pipe... Device and method for estimating temperature of exhaust pipe...

2008-01-08

2008-01-08

McCall, Eric S. (Department: 2855)

Measuring and testing

Simulating operating condition

Marine

Reexamination Certificate

active

11478734

ABSTRACT:
A device for estimating a temperature of an exhaust pipe of an engine includes: a first obtaining section for obtaining a first heat amount that the exhaust pipe receives per unit time from exhaust gas of the internal combustion engine; a second obtaining section for obtaining a second heat amount that the exhaust pipe releases per the unit time to external air; and a temperature estimater estimating the temperature of the exhaust pipe based on the obtained first amount and the obtained second amount. The first obtaining section obtains the first amount based on an exhaust gas speed related value related to a speed of a flow of the exhaust gas.

REFERENCES:
patent: 5956941 (1999-09-01), Cullen et al.
patent: 6739184 (2004-05-01), Brazeau et al.
patent: 2004/0230366 (2004-11-01), Ueda et al.
patent: 2002-48749 (2002-02-01), None

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