The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1993
Filed:
Feb. 27, 1992
Sakumi Hasetoh, Hiroshima, JP;
Osamu Kameda, Hiroshima, JP;
Hitoshi Akutagawa, Hiroshima, JP;
Junichi Okita, Iwakuni, JP;
Yoshimichi Tanaka, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A drive shaft for driving supplemental apparatuses is disposed in or penetrates an oil pan disposed under an engine in order to provide a compact supplemental apparatus layout or arrangement. In the oil pan, a supplemental apparatus drive unit, including the drive shaft, an idle gear meshing with an output gear fixed on an engine crankshaft, and a chain for transmitting drive power from the idle gear to the drive shaft, is supported, and is simultaneously assembled so as to be linked with the idle gear and the output gear when the oil pan is assembled to the engine. The output gear is preferably fixed on the inner side of an endmost journal of the crankshaft to reduce vibrations from the crankshaft. Moreover, providing a damper associated with the output gear fixed to the crankshaft reduces the vibrations from the crankshaft. By providing supplemental appartuses on both ends of the drive shaft, by placing an oil pump near an oil filter, and by placing the oil pump in the oil pan and a water pump out of the oil pan, a compact engine and supplemental apparatus structure, a low oil flow resistance, a reduction in the number of required parts, and so on, are produced.