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. 16, 1999
Filed:
Sep. 02, 1998
Hiroyuki Ando, Utsunomiya, JP;
Kotaro Miyashita, Utsunomiya, JP;
Fumio Hara, Utsunomiya, JP;
Hirofumi Hara, Tochigi-ken, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In order to effectively perform on/off control for an air-conditioning system carried on an automobile during idling operation of the automobile, if a state, in which a difference between a target idling number of revolution and a net idling number of revolution is larger than a preset difference value, is continued for a preset period of time, then an electromagnetic clutch is disconnected, and a compressor is allowed to be in an operation stop state. After that, if the difference is smaller than the preset difference value, and a state, in which the difference is smaller than the preset difference value, is continued for a preset period of time, then the electromagnetic clutch is connected, and the compressor is restored to be in an operating state. By doing so, it is possible to previously avoid the occurrence of vibration of the vehicle body due to vibration of the engine, and the occurrence of booming noise in the vehicle's cabin caused by the vibration. The air-conditioning system is automatically restored to be in the operating state when it is judged that the state of the engine is restored. Therefore, the convenience of use of the air-conditioning system is improved.