초록 ▼

A dish-shaped combustion chamber (14) is formed in a diesel engine piston (13), and a fuel injector (16) is installed on the center axis of this combustion chamber (14). A device (3,41) is provided for varying the intake air amount aspirated into the engine. It is determined whether the engine is an

A dish-shaped combustion chamber (14) is formed in a diesel engine piston (13), and a fuel injector (16) is installed on the center axis of this combustion chamber (14). A device (3,41) is provided for varying the intake air amount aspirated into the engine. It is determined whether the engine is an idle running state or a normal running state. The device (3,41) is controlled so that the intake air amount in the idle running state is less than the intake air amount in the normal running state, and the injector (16) is controlled so that part of the fuel is injected before a main injection when the engine is in the idle running state.

대표청구항 ▼

[ What is claimed is:] [1.]1. A diesel engine comprising:a piston having a dish-shaped combustion chamber is formed on its top surface,a fuel injector situated coaxially with the combustion chamber which injects fuel directly into a cylinder,an intake air amount control device which varies an intake

[ What is claimed is:] [1.]1. A diesel engine comprising:a piston having a dish-shaped combustion chamber is formed on its top surface,a fuel injector situated coaxially with the combustion chamber which injects fuel directly into a cylinder,an intake air amount control device which varies an intake air amount aspirated by the engine,a detector which detects a running state of the engine, anda microprocessor programmed to:determine whether or not the engine is an idle running state or a normal running state,control the intake air amount control device based on the engine running state so that the intake air amount in the idle running state is less than the intake air amount in the normal running state, andcontrol the fuel injector so that part of the fuel is injected before a main injection when the engine is in the idle running state.