Electronic System Reduces Warming-Up Period and Prevents Temperature Falling Down of Vehicular Engines in Long Low Power Situations

Paper #:
  • 2000-01-0297

Published:
  • 2000-03-06
Citation:
Martínez, D., "Electronic System Reduces Warming-Up Period and Prevents Temperature Falling Down of Vehicular Engines in Long Low Power Situations," SAE Technical Paper 2000-01-0297, 2000, https://doi.org/10.4271/2000-01-0297.
Pages:
5
Abstract:
Warming-up time should be reduced to prevent mechanical wear and to get available full power as soon as possible.Going out from a warm parking condition to the cooler outside produce a unnecessary cooling of water and engine housing that impairs warming-up time.Short runs after long stops of engines (taxis for example), could cause engine to work below its advisable temperature level. Other situations like long descents in mountains under cold weather conditions make the engine temperature fall below its warming-up temperature level.The present invention (patent application number: P9802592) is a anti-cooling system, which only works in these situations, uses already existing devices in vehicular water cooled engines, like electric dc-motor and radiator fan, and drives them by means a small electronic controller.The controller senses the possibility of saving engine heat (while cooling water temperature is below an appropriate level). When this situation occurs, it drives fan motor in opposite direction and at appropriate speed to stop incoming cold air flow produced by vehicle movement into engine housing, avoiding in this way cooling of water and external surfaces of engine.
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