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:
Nov. 17, 1987
Filed:
Jun. 25, 1986
Masaru Tsunekawa, Aichi, JP;
Yoshihiro Naito, Nagoya, JP;
Masaya Hyodo, Kariya, JP;
Tatsuya Hayashi, Kariya, JP;
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Aichi, JP;
Abstract
Described is a working gas pressure control apparatus for a Stirling engine including a pressure boost valve provided in a minimum cycle pressure line connected to a working space by a first unidirectional valve, a pressure reducing valve provided in a maximum cycle pressure line connected to the working space by a second unidirectional valve, an operating lever for controlling the opening and closing of the pressure boost and pressure reducing valves, a compressor connected by the pressure reducing and the pressure boost valve to the cycle pressure lines, an unloading valve arranged in a circuit short-circuiting suction and discharge lines of the compressor, and a control unit for opening the unloading valve when engine rpm falls to a value lower than a preset rpm for engine idling, when the pressure boost valve is open and when the engine is operating in the steady state, thereby minimizing compressor load.