Mazda Motor Corporation

Nobuhiro Fujii

Masaaki Sato

Tomokuni Kusunoki

Kenji Kashiyama

Tomohiro Koguchi

Hisashi Okazawa

Akinobu Aoki

Noriyoshi Okii

Hirofumi Ohmori

Yuji Wakida

Fumie Kitakaze

Atsushi Hisano

A state of an oil pressure is determined based on combination of activation of an oil pressure switch and information of the temperature detected by a temperature sensor and an engine speed detected by an engine speed sensor such that determination of the oil-pressure state is conducted from a lower engine-speed range in a case in which the temperature detected by the temperature sensor is relatively low, compared with a case in which the temperature detected by the temperature sensor is relatively high. Accordingly, the oil-pressure state can be properly determined not only in a high engine-speed range but in a low engine-speed range, by utilizing the simple oil pressure switch activated to the conductive state in response to the oil pressure.

Oil-pressure determination apparatus of engine

Disclosed is an arrangement structure for a sensor to be mounted to an engine of a vehicle, wherein the engine is arranged in an engine compartmentof the vehicle in a posture allowing a crankshaftof the engine to be oriented in a widthwise direction of the vehicle. The arrangement structure comprises a driveshaftarranged along a vehicle-rearward lateral surface of the enginefacing in a rearward direction of the vehicle, to rotatably drive a front wheel, and a flange sectionprovided as a joining section between two members () constituting the engine, to protrude in the rearward direction of the vehicle and at a height position below that of the driveshaft, wherein the sensoris mounted to the vehicle-rearward lateral surface of the engineat a height position located above the flange sectionand in overlapping relation with the driveshaftwhen viewed from a rear side of the vehicle. The arrangement structure of the present invention is capable of more reliably protecting the sensor mounted to the engine against foreign objects, such as water and a pebble, to adequately maintain performance of the sensor on a long-term basis.

Arrangement structure for sensor to be mounted to engine of vehicle

Growing community of inventors

Hiroshima, Japan

Nobuhiro Fujii