초록 ▼

A closed loop control system for an exhaust gas recovery flow in an internal combustion engine having an intake air pressurizing device is provided. The closed loop control system includes an engine controller connected to an intake air mass flow sensor, an engine operation sensor, and an intake air

A closed loop control system for an exhaust gas recovery flow in an internal combustion engine having an intake air pressurizing device is provided. The closed loop control system includes an engine controller connected to an intake air mass flow sensor, an engine operation sensor, and an intake air throttle valve for controlling the intake air mass flow rate. In addition, the controller is operatively connected to a variable gas pocket valve for selectively controlling exhaust gas feedback in conjunction with the intake air throttle valve. The variable gas pocket valve and the intake air throttle valve may be actuated in response to the control system parameters to provide accurate control of exhaust gas recovery flow to provide reduced emissions of unburned fuel and particulate matter from the engine.

대표청구항 ▼

[ What is claimed is:] [1.] A system for providing closed loop control of an exhaust gas recirculation flow in an internal combustion engine, said engine defining a combustion chamber for burning a fuel-air mixture and further including an intake air pressurizing device and an intake air flow path,

[ What is claimed is:] [1.] A system for providing closed loop control of an exhaust gas recirculation flow in an internal combustion engine, said engine defining a combustion chamber for burning a fuel-air mixture and further including an intake air pressurizing device and an intake air flow path, said system comprising:an exhaust gas path for permitting a flow of exhaust gas from the combustion chamber to the intake air pressurizing device, said exhaust gas path including an exhaust gas bypass for recirculating exhaust gas to said intake air flow path;a bypass valve disposed proximate said exhaust gas bypass for selectively controlling the flow of said exhaust gas portion through said exhaust gas bypass to said intake air flow path;an intake air throttle valve for selectively controlling said intake air flow rate; andan engine controller connected to said bypass valve and to said intake air throttle valve for cooperatively controlling actuation and providing closed loop control of said bypass valve and said intake air throttle valve thereby providing control of exhaust gas recirculation flow.