Patent ID: 9027537
Filing Date: 2015-05-12
Classification: F01M,F01P,F02B,F02M

Abstract:
1. A positive crankcase ventilation (PCV) valve installation structure for installing a PCV valve of an internal combustion engine on an engine body, comprising: a blow-by gas recirculation system that includes: a ventilation hose that connects the engine body to an intake device introducing outside air into the engine body and that has a recirculation passage recirculating blow-by gas arising in the engine body to the intake device; and the PCV valve that is installed on the engine body and that opens or closes the recirculation passage of the blow-by gas; a heat exchanger that exchanges heat between lubricating oil and a medium solution that is lower in temperature than the lubricating oil; and a heat transfer portion that transfers heat of the heat exchanger to the PCV valve, wherein the heat transfer portion is a cover of the heat exchanger, and the PCV valve is installed on the cover, the heat exchanger is an oil cooler device, the oil cooler device includes: an oil cooler body that has a wall partitioning an inner side from an outer side and that flows the lubricating oil through the inner side surrounded by the wall; and a water jacket that surrounds the oil cooler body and that flows the medium solution so as to be in contact with the wall of the oil cooler body from the outer side, and heat of the lubricating oil is transferred to the medium solution via the wall, and the oil cooler body is positioned adjacent to a back surface of the cover.