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:
Sep. 20, 2016
Filed:
Jun. 07, 2013
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An apparatus for determining a failure in a thermostat for controlling the flow of a coolant into a radiator in response to an actual water temperature of the coolant for an engine in a vehicle includes: a water temperature detector that detects the actual water temperature; a water temperature estimator that calculates an estimated water temperature of the coolant; and a failure determining unit that compares the actual water temperature detected by the water temperature detector with the estimated water temperature calculated by the water temperature estimator under cold start of the engine and determines whether the thermostat is valve-open failure. In an engine nonoperating mode including at least automatic stop of the engine, the water temperature estimator applies a behavior of the actual water temperature to an estimated water temperature calculated immediately before automatic stop of the engine to calculate an estimated water temperature in the engine nonoperating mode.