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:
Sep. 09, 1986
Filed:
Sep. 26, 1985
Hiroya Fujita, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
A configuration for a V type double overhead cam shaft engine which has left and right cylinder banks and cylinder heads. Left and right intake cam shafts are fitted to the left and right cylinder heads. The left intake cam shaft is substantially identically formed to the right intake cam shaft and is fitted in reversed alignment thereto. Similarly, left and right exhaust cam shafts are fitted to the left and right cylinder heads, and the left exhaust cam shaft is substantially identically formed to the right exhaust cam shaft and is fitted in reversed alignment thereto. One pair of the same type of the cam shafts are driven in a determinate phase relationship with the engine crank shaft. A pair of gears, with the same number of teeth, are provided on the left intake and exhaust cam shafts, and mesh together so as to rotationally couple together them in a determinate phase relationship. Similarly, a pair of gears, with the same number of teeth, are provided on the right intake and exhaust cam shafts, and mesh together so as to rotationally couple together them in a determinate phase relationship. At the left and right cylinder banks, the number n of teeth of the phase difference of the pairs of gears is determined by the equation n=(gamma/180.degree.)N, where gamma is the phase difference angle of the intake and exhaust cam shafts, and N is the number of teeth on the gears. The engine may be a six cylinder engine.