US 2011/0252786 A1 · CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Abstract

There is provided a control device for an internal combustion engine capable of suppressing trouble such that the gas having an EGR ratio higher than necessary is sucked with the opening of an intake air bypass passage. A supercharger having a compressor is provided in an intake air passage of an internal combustion engine. An EGR passage and an EGR valve are provided. The intake air bypass passage connects the upstream side of the compressor in the intake air passage to the downstream side of the compressor in the intake air passage. The intake air bypass passage is provided with an air bypass valve (ABV). The EGR valve is closed simultaneously with the operation of the ABV.

Claims10

Dependent claims

A control device for an internal combustion engine comprising:

a supercharger having a compressor provided in an intake air passage of the internal combustion engine,
EGR means for circulating exhaust gas of the internal combustion engine to the upstream side of the compressor in the intake air passage;
an intake air bypass passage for connecting the upstream side of the compressor in the intake air passage to the downstream side of the compressor in the intake air passage;
opening/closing means provided in the intake air bypass passage, and
EGR amount control means for reducing the amount of exhaust gas circulated to the upstream side of the compressor when the opening/closing means opens the intake air bypass passage to a degree of opening exceeding a predetermined degree of opening of zero or larger.

2 more elements

A control device for an internal combustion engine comprising:

a supercharger having a compressor, provided in an intake air passage of the internal combustion engine,
an EGR unit circulating exhaust gas of the internal combustion engine to the upstream side of the compressor in the intake air passage;
an intake air bypass passage for connecting the upstream side of the compressor in the intake air passage to the downstream side of the compressor in the intake air passage;
an opening/closing unit provided in the intake air bypass passage, and
an EGR amount control unit reducing the amount of exhaust gas circulated to the upstream side of the compressor when the opening/closing unit opens the intake air bypass passage to a degree of opening exceeding a predetermined degree of opening of zero or larger.

2 more elements

Dependencies are inferred from the claim text.

Control device for internal combustion engine

Life of this patent

Control device for internal combustion engine

Life of this patent

Abstract

Claims10