Reducing turbocharged engine overheating

A turbocharger and engine technology, applied in engine components, combustion engines, engine control, etc., can solve the problem of not keeping the temperature of the cylinder head below the melting point of the engine metal
CN104047737AActive Publication Date: 2014-09-17FORD GLOBAL TECH LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FORD GLOBAL TECH LLC
Publication Date
2014-09-17

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Abstract

A method comprising in response to coolant loss in a turbocharged engine, deactivating one or more engine cylinders while limiting engine load of one or more active cylinders based on an engine speed, and a cylinder head temperature.
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Description

technical field

[0001] The present invention relates to reducing overheating of turbocharged engines. Background technique

[0002] Engines may be cooled by circulating a coolant fluid, such as water, through passages in the engine. Engine metal components can overheat in the event of cooling system degradation (e.g. water pump degradation) or coolant loss (e.g. due to coolant system leaks).

[0003] Gebby et al. (US 7,204,235) address overheating in the event of cooling system degradation by alternately closing each bank of fuel injectors of the engine cylinders and air cooling the deactivated engine banks with unburned charge air. Alternately deactivating each bank of cylinders may provide a portion of engine torque for vehicle operation.

[0004] The inventors herein have recognized potential problems with the above approach. That is, with turbocharged and other high-specific power output engines, traditional fail-safe cooling strategies such as deactivation of alterna...

Claims

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