Mazda Motor Corporation

Kunihiro Nishi

Kenko Ujihara

Masanori Hashimoto

Masaaki Sato

Hisashi Okazawa

Sakumi Haseto

Hisayuki Yamane

Tomohisa Handa

Noriyoshi Okii

A harness has a laterally extending portion disposed along a block rear surface of an engine and extending in a width direction of a vehicle within a predetermined height range in which a drive shaft is included. The engine has a projection disposed in at least one of a position above the laterally extending portion or a position below the laterally extending portion within the predetermined height range in a portion, of the engine, toward the rear of the vehicle, the projection projecting, toward the rear of the vehicle, further than the laterally extending portion.

Harness mounting structure

Provided is an engine oil deterioration diagnosis device () comprising annual traveling distance calculating part (), a used hour calculating part (), a severe condition determining part (), an oil traveling distance calculating part (), an oil traveling distance accumulating part (), and an engine oil deterioration diagnosis part () for diagnosing that engine oil is in a state of deterioration when an oil traveling distance accumulated by the oil traveling distance accumulating part reached a predetermined value, wherein the oil traveling distance calculating part () comprises an oil traveling distance addition correcting part () for calculating the oil traveling distance by adding a predetermined value to the traveling distance when the severe condition determining part determines the state as the severe condition.

Engine oil deterioration diagnosis device

An oil pump unit comprises a pump shaft and a pump housing which stores the pump shaft. A balancer unit comprises a pair of balancer shafts and a balancer housing which stores the balancer shafts. The pump housing and the balancer housing are coupled to each other at least in the vicinity of a periphery of the pump shaft, and at a coupling portion in the vicinity of the periphery of a power transmission shaft is formed a connection groove which connects the inside to the inside of the coupling portion. Accordingly, it can be retrained that the reliability of journal portions of the balancer shaft of the balancer unit and the like is deteriorated by dusts and the like contained in high-pressure oil from the oil pump unit in a balancer device of an engine.

Balancer device of engine

Growing community of inventors

Higashihiroshima, Japan

Kunihiro Nishi