公开(公告)号：US6161767A

公开(公告)日：2000-12-19

申请号：US468609

申请日：1999-12-21

Applicant: In-Joo Yeo

Inventor： In-Joo Yeo

IPC: F01P11/14 ,  F01P7/16 ,  F01P11/16 ,  F02D41/22

CPC classification number: F02D41/221 ,  F01P7/16 ,  F01P11/16 ,  F01P2025/08 ,  F01P2031/20 ,  F01P2031/32 ,  Y02T10/40

Abstract: A method of sensing failure of a thermostat in a vehicle comprises the steps of sensing signals from various kinds of sensors after starting of the engine, and determining whether the signals are normal; determining whether the amount of intake air among the sensed signals from the sensors in the above step is larger than the amount of intake air during a predetermined period; accumulating the elapsed time by a given time at every predetermined time depending on the determination in the above step; determining whether the accumulated time obtained in the above step has reached a predetermined time for determining the failure; sensing the temperature of the coolant when the accumulated time in the above step has reached the predetermined time for determining the failure, and determining whether the sensed temperature of the coolant is below a predetermined temperature of the coolant; and indicating failure alarm when the sensed temperature of the coolant in the above step is below the predetermined temperature of the coolant, thereby previously preventing overheat of an engine in the vehicle by sensing the failure of the thermostat which opens and closes a coolant passage depending on the temperature of the coolant for cooling the engine.

Abstract translation: 一种感测车辆恒温器故障的方法，包括以下步骤：在发动机起动之后检测来自各种传感器的信号，并确定信号是否正常; 确定在上述步骤中来自传感器的感测信号中的进气量是否大于预定时间段内的进气量; 取决于上述步骤中的确定，在每个预定时间累积经过时间给定时间; 确定在上述步骤中获得的累积时间是否已经达到用于确定故障的预定时间; 当上述步骤中的累积时间已经达到用于确定故障的预定时间时，感测冷却剂的温度，以及确定所感测到的冷却剂的温度是否低于冷却剂的预定温度; 并且当上述步骤中的感测到的冷却剂的温度低于冷却剂的预定温度时，指示故障报警，从而通过感测根据冷却剂通道开启和关闭冷却剂通道的恒温器的故障预先防止车辆中的发动机过热 用于冷却发动机的冷却剂的温度。