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Methods and system for detecting latent degradation of engine starting system feedback

A technology of engine starting and starting system, which is applied in the direction of engine starting, engine motor starting, engine control, etc., which can solve problems such as complicated engine diagnosis, and achieve the effect of improving operation and detection

Pending Publication Date: 2021-11-09
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it may be desirable to provide more sophisticated diagnostics than merely indicating whether the engine was cranked successfully

Method used

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  • Methods and system for detecting latent degradation of engine starting system feedback
  • Methods and system for detecting latent degradation of engine starting system feedback
  • Methods and system for detecting latent degradation of engine starting system feedback

Examples

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Embodiment Construction

[0013] The present description relates to controlling inhibition of engine pulldown based on feedback generated from one or more engine starting systems. The prohibition on engine pulldown can be applied to figure 1 Type of engine shown. The engine can be included as figure 2 in the drive train shown. The powertrain may include more than one engine starting device. In one example, a conventional starter and a belt integrated starter / generator (BISG) are included in the driveline used to start the engine. image 3 Detailed components of an engine starting system are shown. Figure 4 shown in the Figure 5 An exemplary engine start sequence for the method. Figure 5 A method for operating a vehicle and diagnosing an engine starting system is shown in .

[0014] refer to figure 1 , an internal combustion engine 10 (comprising a plurality of cylinders, figure 1 One of the cylinders shown in ) is controlled by the electronic engine controller 12 . Engine 10 is comprised ...

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Abstract

The invention provides methods and system for detecting latent degradation of engine starting system feedback. A method and system for operating a vehicle that includes feedback of operating status of an engine starting system is described. In one example, the method inhibits automatic engine pull-down in response to feedback from an engine starting system that does not meet expectations. The system and method may provide diagnostics for the engine starting system.

Description

technical field [0001] The present description relates to methods and systems for determining potential degradation of engine starting system feedback. The method and system may be applicable to a vehicle including a starter having one or more feedback indicators. Background technique [0002] The engine of the vehicle may include a starter to spin the engine prior to starting the engine. The starter may include a pinion to selectively engage the flywheel of the engine so that the engine may spin. Additionally or alternatively, the vehicle may include an integrated starter / generator (ISG) and / or a belt integrated starter / generator (BISG) to crank and crank the engine prior to starting the engine. It may be desirable to provide on-board diagnostics to indicate the presence or absence of engine starting system degradation (e.g., a lower than desired engine cranking speed provided by the engine starting system, higher or lower current draw, etc.) such that the vehicle operato...

Claims

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Application Information

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IPC IPC(8): F02N11/10F02N11/08
CPCF02N11/108F02N11/0818F02N11/04F02N11/006F02N11/087F02N2200/042F02D2041/227F02N11/101F02N2200/022F02N2200/041F02N15/08F02N11/0825F02N11/0862F02N2011/0896
Inventor 达武德·库库卡斯兰E·卢埃森A·吉布森V·特鲁皮亚诺
Owner FORD GLOBAL TECH LLC