US 2013/0255251 A1 · INTERNAL COMBUSTION ENGINE SYSTEM

Abstract

Internal combustion engine system includes an electric supercharger which supercharges sucked air; a throttle valve which adjusts the flow amount of intake air of supercharged air into a cylinder; an EGR path in which a part of exhaust gas exhausted from the exhaust manifold side is recirculated to the intake manifold side; an EGR valve which adjusts the amount of exhaust gas passing through the EGR path; and an internal combustion engine control unit which controls the throttle valve, the EGR valve, and the electric supercharger. This enables to satisfy both performance of the supercharger and fuel consumption of the internal combustion engine without complicating the structure of EGR.

Claims9

Dependent claims

An internal combustion engine system comprising:

an internal combustion engine;
an electric supercharger which is placed in an intake air path of said internal combustion engine and supercharges air to be sucked into said internal combustion engine;
a throttle valve which is placed in the intake air path of said internal combustion engine and controls the flow amount of intake air into said internal combustion engine depending on operation conditions of an accelerator pedal;
an EGR path which is connected to the downstream side of said electric supercharger and recirculates apart of exhaust gas of said internal combustion engine to the intake air side;
an EGR valve which is placed in the EGR path and adjusts the flow amount of the exhaust gas;
and
an internal combustion engine control unit which controls said electric supercharger, said throttle valve, and said EGR valve.

4 more elements

An internal combustion engine system comprising:

an internal combustion engine;
an electric supercharger which is placed in an intake air path of said internal combustion engine and supercharges air to be sucked into said internal combustion engine;
a turbocharger which is placed in the intake air path of said internal combustion engine and is placed on the downstream side of said electric supercharger to supercharge air to be sucked into said internal combustion engine;
a throttle valve which is placed in an intake air path of said internal combustion engine and controls the flow amount of intake air into said internal combustion engine depending on operation conditions of an accelerator pedal;
an EGR path which is connected to the upstream side of said turbocharger and to the downstream side of said electric supercharger and recirculates a part of exhaust gas of said internal combustion engine to the intake air side;
an EGR valve which is placed in the EGR path and adjusts the flow amount of the exhaust gas;
and
an internal combustion engine control unit which controls said electric supercharger, said turbocharger, said throttle valve, and said EGR valve.

5 more elements

Dependencies are inferred from the claim text.

Internal combustion engine system

Life of this patent

Internal combustion engine system

Life of this patent

Abstract

Claims9