METHOD FOR DETECTING HEATER CORE ISOLATION VALVE STATUS

Methods and systems are provided for monitoring a status of a heater core isolation valve (HCIV) housing in an engine coolant circuit including a first coolant loop and a second coolant loop. In one example, a method may include indicating degradation of the HCIV based on a difference between a firs...

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Hauptverfasser:	KALIVARAPU SRIDHAR, JENTZ ROBERT ROY, REJETI SITARAM
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES BLASTING COMBUSTION ENGINES COOLING OF INTERNAL-COMBUSTION ENGINES COOLING OF MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS STEAM ENGINES SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Methods and systems are provided for monitoring a status of a heater core isolation valve (HCIV) housing in an engine coolant circuit including a first coolant loop and a second coolant loop. In one example, a method may include indicating degradation of the HCIV based on a difference between a first coolant loop temperature and a second coolant loop temperature upon activation of coolant system pumps and deactivation of a positive temperature coefficient (PTC) heater housed in the cabin heating loop. 本公开提供了"用于检测加热器芯体隔离阀状态的方法"。提供了用于监测容置在发动机冷却剂回路中的加热器芯体隔离阀(HCIV)的状态的方法和系统，所述发动机冷却剂回路包括第一冷却剂回路和第二冷却剂回路。在一个示例中，一种方法可以包括基于在激活冷却剂系统泵和停用容置在所述车舱加热回路中的正温度系数(PTC)加热器时第一冷却剂回路温度和第二冷却剂回路温度之间的差值来指示所述HCIV的劣化。