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:
Jun. 12, 2001
Filed:
Aug. 05, 1999
Yoshimichi Tsubata, Wako, JP;
Katsuyuki Narai, Wako, JP;
Eiji Suzuki, Wako, JP;
Daihei Teshima, Wako, JP;
Atsushi Fujikawa, Wako, JP;
Keiichi Hanyu, Wako, JP;
Masaaki Yamaguchi, Wako, JP;
Tomoyuki Kanda, Wako, JP;
Eiji Ohyama, Wako, JP;
Akinori Tanno, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A lubrication pressure controller comprises a lubrication pressure regulating valve,, which is provided in a lubrication oil passage,directing hydraulic oil to lubricated parts, and a cooler pressure regulating valve,, which is provided in a discharge oil passage,of the lubrication pressure regulating valve,. The lubrication pressure regulating valve,adjusts the pressure in the lubrication oil passage,, and the cooler pressure regulating valve,adjusts the pressure supplied to an oil cooler,. The hydraulic oil discharged from the cooler pressure regulating valve,is returned through a recirculation line,to a suction oil passage,of a pump. In this construction, an adequate supply of lubrication oil is maintained even if one of the valves experiences locking of a valve spool on an open side. Moreover, by providing signal pressure generating means,, which applies a signal pressure to these two valves in correspondence with a driving condition, the lubrication pressure controller can be set to acquire a desired balance in the lubrication, cooling and recirculation for the hydraulic oil in response to a driving condition.