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:
Mar. 31, 2020
Filed:
Jun. 15, 2016
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Kentaro Kasuya, Atsugi, JP;
Nobuyuki Ichimaru, Atsugi, JP;
Takahide Kobayashi, Atsugi, JP;
Ryusuke Hirao, Atsugi, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;
Abstract
The invention detects at least either one of a supply fault and a ground fault distinctively from a disconnection. A compressor relayis placed between a batteryand an air compressor module. The compressor relaycontrols the drive and stop of the air compressor module. A compressor driveroutputs a drive signal to the compressor relay. A ground-side voltage monitordetects the drive voltage of the compressor relay. A pressure sensordetects air pressure in a discharge side of the air compressor module. A microcomputerof a controllerdetects a ground fault and a disconnection of the drive signal of the compressordistinctively from each other on the basis of a voltage value Vg detected by the ground-side voltage monitorand a pressure valve P detected by the pressure sensor