Method for protecting engine from short circuiting and wire failure of fan clutch, and device thereof
US9534545B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Dec 31, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2031/34
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method for protecting an engine from short circuiting and wire failure of a fan clutch, and a device thereof wherein the method for protecting an engine comprises: a step of sensing the temperature of a coolant if a fan rotates at a set minimum rpm by the short circuiting and wire failure of a fan clutch; a step of comparing the sensed coolant temperature and a set danger temperature; and a step of defaulting if the sensed coolant temperature is lower than the set danger temperature and reducing the engine rpm if the sensed coolant temperature is equal to or higher than the set danger temperature according to a result of the comparison such that overheating of the engine can be prevented. The engine rpm is gradually lowered so as to protect the engine at a first stage if the fan operates at the minimum rpm due to the cable short cut and failure of the fan clutch, and the engine is forcedly stopped so as to protect the engine at a second stage if the overheating of the coolant is serious, thereby ensuring durability of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.