초록 ▼

A method of operating an internal combustion engine having a hydraulic supply circuit, a hydraulically-powered fuel injector assembly, and a hydraulically-powered compression release brake assembly includes the step of advancing a pressurized hydraulic fluid to the fuel injector assembly from the hy

A method of operating an internal combustion engine having a hydraulic supply circuit, a hydraulically-powered fuel injector assembly, and a hydraulically-powered compression release brake assembly includes the step of advancing a pressurized hydraulic fluid to the fuel injector assembly from the hydraulic supply circuit so as to cause fuel to be injected into a cylinder associated with the engine when the engine is being operated in a drive mode of operation. The method also includes the step of advancing the pressurized hydraulic fluid to the compression release brake assembly so as to cause a piston to be moved from a retracted position to an extended position when the engine is being operated in a brake mode of operation. Yet further, the method includes the step of rotating a rocker arm about a rocker arm shaft so as to cause the rocker arm to contact an exhaust valve thereby urging the exhaust valve into an open exhaust valve position in response to movement of the piston from the retracted position to the extended position. An internal combustion engine is also disclosed.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of operating an internal combustion engine having (i) a hydraulic supply circuit, (ii) a hydraulically-powered fuel injector assembly, (iii) a hydraulically-powered compression release brake assembly having (A) a first piston mechanically coupled to a first exh

[ What is claimed is:] [1.]1. A method of operating an internal combustion engine having (i) a hydraulic supply circuit, (ii) a hydraulically-powered fuel injector assembly, (iii) a hydraulically-powered compression release brake assembly having (A) a first piston mechanically coupled to a first exhaust valve associated with said internal combustion engine and (B) a second piston mechanically coupled to a second exhaust valve associated with said internal combustion engine, and (iv) an engine control module electrically coupled to said hydraulically-powered fuel injector assembly and said hydraulically-powered compression release brake assembly, comprising the steps of:advancing a pressurized hydraulic fluid to said fuel injector assembly from said hydraulic supply circuit in response to an injection pulse generated by said engine control module so as to cause fuel to be injected into a cylinder associated with said engine when said engine is being operated in a drive mode of operation;advancing said pressurized hydraulic fluid to said compression release brake assembly from said hydraulic supply circuit in response to a brake pulse generated by said engine control module so as to selectively cause said first piston to be moved from a retracted position to an extended position when said engine is being operated in a brake mode of operation while said second piston remains in a retracted position; androtating a rocker arm about a rocker arm shaft so as to cause said rocker arm to contact said first exhaust valve thereby urging said first exhaust valve into an open exhaust valve position in response to movement of said first piston from said retracted position to said extended position.