Patent ID: 7934491
Filing Date: 2011-05-03
Classification: F02M,Y02T

Abstract:
1. Heater module for the admission gases of an automobile engine with an overheating protection and/or closed-loop regulation, said module comprising: a frame; and a power control circuit provided with at least one power switch that controls the power supply to at least one heating resistor mounted electrically insulated from the frame by ceramic supports, said at least one heating resistor heating the engine admission gases, wherein said power control circuit is configured to control operation of the heater module based on the measurement of the temperature of the frame and/or the temperature of the heating resistor, wherein said module further comprises at least one thermal switch in series with the heating resistor, said thermal switch placed on the frame and arranged to cut off current to the heating resistor when there is an excessive heating of the frame that the control circuit cannot limit.