Patent ID: 6295816
Filing Date: 2001-10-02
Classification: F02B,F02D,Y02T

Abstract:
A method of protecting a turbo-charged diesel locomotive engine from excessively high combustion chamber pressure, the method comprising the steps of:determining an allowable combustion chamber pressure for the turbo-charged diesel engine;determining a first pressure rise in the combustion chamber over intake manifold air pressure as a function of the manifold air temperature;determining a second pressure rise in the combustion chamber over the first pressure rise as a function of a timing of fuel injection into the combustion chamber;determining a program intake manifold air pressure as a function of the allowable combustion chamber pressure, the first pressure rise, and the second pressure rise;installing a valve in fluid communication with the intake manifold for venting intake manifold air to atmosphere; andcomparing the program intake manifold air pressure to actual intake manifold air pressure to control the operation of the valve for controlling intake manifold air pressure.