Thermostat monitoring system of vehicle and method thereof

Details Thermostat monitoring system of vehicle and method thereof Thermostat monitoring system of vehicle and method thereof

2007-08-28

2007-08-28

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Cooling

Indicators and safety devices

C073S118040, C701S112000

Reexamination Certificate

active

11022259

ABSTRACT:
A thermostat monitoring system is provided which comprises a coolant temperature detection member for detecting a temperature of a coolant. An intake air temperature detection member detects a temperature of ambient air introduced into combustion chambers. An intake air amount detection member detects an amount of intake air. An engine speed detection member detects an engine speed; a blower switch detects a selected contacting point for driving a blower motor; and a control unit calculates a primary modeled coolant temperature and an auxiliary modeled coolant temperature based on information detected by the coolant temperature detection member, the intake air temperature detection member, the intake air amount detection member, the engine speed detection member, and the blower switch, and for monitoring using the primary modeled coolant temperature and the auxiliary modeled coolant temperature to determine whether a thermostat is in a stuck-open state.

REFERENCES:
patent: 7010967 (2006-03-01), Wakahara et al.
patent: 2001-349218 (2001-12-01), None

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