초록 ▼

A method of operating an engine assembly having a cylinder assembly which defines a combustion chamber is disclosed. The cylinder assembly includes an engine block having a piston cylinder defined therein, a piston which translates in the piston cylinder, and a crankshaft which is mechanically coupl

A method of operating an engine assembly having a cylinder assembly which defines a combustion chamber is disclosed. The cylinder assembly includes an engine block having a piston cylinder defined therein, a piston which translates in the piston cylinder, and a crankshaft which is mechanically coupled to the piston. The method includes the steps of performing an intake stroke of the engine assembly and advancing gaseous fuel and air into the combustion chamber during the intake stroke performing step. The method further includes the step of performing a compression stroke of the engine assembly after the is intake stroke performing step. The method yet further includes the step of injecting a pilot fuel into the combustion chamber during the compression stroke while the crankshaft is positioned at about X degrees before top dead center, wherein 21.0

대표청구항 ▼

[ What is claimed is:] [1.] A method of operating an engine assembly having a cylinder assembly which defines a combustion chamber and includes (i) an engine block having a piston cylinder defined therein, (ii) a piston which translates in the piston cylinder, (iii) a crankshaft which is mechanicall

[ What is claimed is:] [1.] A method of operating an engine assembly having a cylinder assembly which defines a combustion chamber and includes (i) an engine block having a piston cylinder defined therein, (ii) a piston which translates in the piston cylinder, (iii) a crankshaft which is mechanically coupled to the piston, (iv) an exhaust conduit in fluid communication with the combustion chamber, and (v) a NO.sub.X sensor positioned to measure NO.sub.X content of exhaust gases in the exhaust conduit, comprising the steps of:performing an intake stroke of the engine assembly;advancing gaseous fuel and air into the combustion chamber during the intake stroke performing step;performing a compression stroke of the engine assembly after the intake stroke performing step;injecting a pilot fuel into the combustion chamber during the compression stroke while the crankshaft is positioned at about X degrees before top dead center, wherein 21.0