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:
Jul. 26, 1988
Filed:
Jul. 07, 1987
Masato Itakura, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A cooling system for an internal combustion engine comprising independent head-side and block-side water jackets and a shared radiator and cooling fan. Further included are a first cooling water conduit connecting the outlet of the head-side jacket and the inlet of the radiator, a mixing valve having two water inlets and one water outlet, a second cooling water conduit connecting one water inlet and the outlet of the radiator, a third conduit connecting the water outlet of the block-side jacket and the other water inlet, a water pump connected between the outlet of the mixing valve and the block-side jacket, a fourth conduit branched from the second conduit and connected with the inlet of the head-side jacket, an auxiliary water pump disposed in the fourth conduit pumping water to said head-side jacket, a fifth conduit branched from the third conduit and connected with the first conduit, a one-way valve disposed in the fifth conduit allowing water to flow only from the third conduit to the first conduit, a one-way valve disposed in the second conduit between the branch point of the fourth conduit and the mixing valve allowing water to flow only from the branch point to the mixing valve, and a control unit controlling the mixing ratio of the mixing valve, the auxiliary water pump and the cooling fan.