Patent ID: 8441345
Filing Date: 2013-05-14
Classification: F01M

Abstract:
1. A hydraulic pressure warning system for an internal combustion engine, includes a hydraulic pressure sensor for detecting hydraulic pressure in a lubricating oil passage of the engine and issues a warning based on hydraulic pressure detected by the hydraulic pressure sensor when the hydraulic pressure drops, wherein the hydraulic pressure sensor is provided on a wall surface of a water jacket of a cylinder so as to project therefrom, wherein the internal combustion engine includes a main gallery adapted to distribute lubricating oil discharged from an oil pump to journal bearings for a crankshaft, and a sub gallery branched from the main gallery and adapted to distribute lubricating oil to a cylinder head, and the hydraulic pressure sensor is disposed on an upstream side of an orifice in front of an oil feed portion of the cylinder head downstream of the sub gallery.