초록 ▼

The invention provides an intake-air cooling device for an internal combustion engine that can be installed compactly. The invention provides an intake-air cooling device for a gasoline engine equipped with an intercooler that cool intake air with outside air and an evaporator that cools intake air

The invention provides an intake-air cooling device for an internal combustion engine that can be installed compactly. The invention provides an intake-air cooling device for a gasoline engine equipped with an intercooler that cool intake air with outside air and an evaporator that cools intake air with refrigerant circulating in a bypass refrigeration circuit, disposed in this sequence in an intake-air channel from a supercharger to the gasoline engine. The intercooler is disposed in an outside-air duct through which outside air passes, the evaporator is disposed inside a case through which the intake air passes, and a bottom plate of the case forms part of the outside-air duct.

대표청구항 ▼

What is claimed is: 1. An intake-air cooling device for an internal combustion engine equipped with an intercooler that cools intake air with outside air and an intake-air evaporator that cools the intake air with refrigerant circulating in an air-conditioning refrigeration circuit, provided in thi

What is claimed is: 1. An intake-air cooling device for an internal combustion engine equipped with an intercooler that cools intake air with outside air and an intake-air evaporator that cools the intake air with refrigerant circulating in an air-conditioning refrigeration circuit, provided in this sequence in an intake-air channel from a supercharger to the internal combustion engine, the intake-air cooling device comprising: a knocking sensor that detects knocking of the internal combustion engine; and an opening-and-closing valve that opens and closes a supply channel of the refrigerant to the intake-air evaporator, wherein the opening-and-closing valve is configured so as to open when the knocking sensor detects knocking. 2. An intake-air cooling device for an internal combustion engine according to claim 1, wherein the knocking sensor detects vibration of the internal combustion engine. 3. An intake-air cooling device for an internal combustion engine according to claim 1, wherein the knocking sensor detects a cylinder pressure of the internal combustion engine. 4. An intake-air cooling device for an internal combustion engine according to claim 1, wherein when the opening-and-closing valve is opened, the refrigeration circuit adjusts the performance of a compressor that compresses and supplies the refrigerant so as to maintain air-conditioning performance at a prescribed level. 5. An intake-air cooling device for an internal combustion engine according to claim 1, wherein the intake-air evaporator is configured so as to constantly receive a prescribed amount of refrigerant during operation. 6. An intake-air cooling device for an internal combustion engine according to claim 1, wherein when the output of the internal combustion engine is large, all of the refrigerant flowing in the refrigeration circuit is made to flow to the intake-air evaporator. 7. An automobile comprising an intake-air cooling device for an internal combustion engine according to claim 1.