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Engine control system and method

An engine, supercharged engine technology, used in engine control, engine components, combustion engines, etc.

Active Publication Date: 2014-04-16
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, even small condensate measurement errors can lead to flameouts

Method used

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  • Engine control system and method
  • Engine control system and method
  • Engine control system and method

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Embodiment Construction

[0025] The following description refers to the connection from the figure 1 A system and method for extracting condensate from a charge air cooler (CAC) of an engine system of the system. Condensate purging may be opportunistic during engine deceleration events when fueling to engine cylinders is temporarily disabled, such as during tip-out conditions. The engine controller can be configured to perform tasks such as Figure 4 The control program of the program to open the valve connected to the charge air cooler ( Figure 2A -B and Figure 3A -B) to purge condensate to the engine intake during conditions when cylinder combustion is not occurring. as from Figure 5 Inferred from the model, the purge setting may be based on the amount of condensate stored in the CAC. During engine deceleration, intake throttle opening may be temporarily increased to increase intake air flow to the engine, further assisting in drawing condensate into the engine. An exemplary extraction oper...

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Abstract

The invention relates to an engine control system and method. Methods and systems are provided for purging condensate from a charge air cooler to an engine intake. During an engine deceleration event, airflow through a charge air cooler is temporarily increased to purge stored condensate to the engine intake. By delivering condensate while an engine is not fueled, misfire events resulting from ingestion of water are reduced.

Description

technical field [0001] The present invention relates to engine control systems and methods. Background technique [0002] The engine output can be increased by using a supercharger that compresses the intake air. Since boost compression increases air temperature, a charge air cooler can be utilized downstream of the compressor to cool the compressed air, further increasing the potential power output of the engine. The intake air passes through the charge air cooler and is cooled below the dew point, where condensation occurs. Condensate may be collected in the trap and thereafter provided to the engine at a controlled intake rate, such as during steady state or cruise conditions. However, even a small error in the introduction of water into the engine can increase the likelihood of a misfire event since the ingested water slows the rate of combustion. The engine control system can employ various misfire control methods to reduce misfires due to water ingestion. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D23/00
CPCY02T10/146F02B29/0468F02M25/0707F02B29/0425F02B29/0418F02D41/123Y02T10/121F02D41/0005Y02T10/144F02D23/00F02D2200/0418F02M25/028F02M26/05Y02T10/12Y02T10/40
Inventor C·P·格卢格拉J·P·怀特黑德
Owner FORD GLOBAL TECH LLC