Methods and system for operating an engine

a technology for operating systems and engines, applied in the direction of engine starters, electric control, battery/fuel cell control arrangements, etc., can solve the problems of engine failure, engine failure to restart, and engine failure again, so as to reduce the possibility of engine no start, battery health may be evaluated, and the effect of reducing the possibility of engine failur

Active Publication Date: 2019-09-05
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This method effectively diagnoses battery health, reduces engine no-start conditions, and prevents automatic engine stopping based on battery state, ensuring the engine operates without misfires and can be restarted successfully even in degraded battery conditions.

Problems solved by technology

However, if an attempt is made to automatically restart the engine with a battery that is degraded or partially degraded, the engine may fail to restart.
The vehicle's human driver may attempt to manually restart the engine, but the manual attempts to restart the engine are also likely to be futile because of the degraded state of the battery.
Nevertheless, if the engine is subsequently automatically stopped, the engine may once again fail to restart due to battery degradation.

Method used

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  • Methods and system for operating an engine
  • Methods and system for operating an engine
  • Methods and system for operating an engine

Examples

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Embodiment Construction

[0013]The present description is related to operating an engine and diagnosing operation of a battery in a way that reduces the possibility of engine no starts. The method may be particularly beneficial for stop / start engines that are automatically stopped and started in response to vehicle operating conditions other than an input that may be exercised by a driver of a vehicle that has a sole function of requesting engine stopping and starting. The engine may be of the type shown in FIG. 1. The engine and a battery may be included in a driveline of a vehicle as is shown in FIG. 2. The battery may be diagnosed as is shown in the sequence of FIG. 3. A method for operating an engine and diagnosing a battery is shown in FIG. 4.

[0014]Referring to FIG. 1, internal combustion engine 10, comprising a plurality of cylinders, one cylinder of which is shown in FIG. 1, is controlled by electronic engine controller 12. The controller 12 receives signals from the various sensors shown in FIG. 1 a...

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Abstract

Systems and methods for operating a vehicle that includes an engine that may be automatically stopped and started are described. In one example, automatic stopping of the engine may be inhibited if voltage of a battery is reduced by more than a threshold voltage while an engine of the vehicle is operated in a deceleration fuel shut off mode.

Description

FIELD[0001]The present description relates to methods and a system for operating an engine that may be automatically stopped and started to conserve fuel. The methods and systems may be particularly useful to inhibit automatic engine stopping and starting during conditions of battery degradation.BACKGROUND AND SUMMARY[0002]A vehicle may include an engine that may be automatically stopped and started to conserve fuel. The engine may be stopped via a controller in response to vehicle operating conditions without receiving a specific request to stop the engine from a human driver or occupant of the vehicle. For example, the engine may be automatically stopped in response to driver demand torque being less than a threshold torque and a human driver applying a brake pedal. The engine may be automatically restarted after it has been automatically stopped in response to a driver demand torque that is greater than a threshold torque. However, if an attempt is made to automatically restart t...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F02N11/08B60W20/40B60L11/18B60W10/26B60W10/06B60W30/18
CPCF02N11/0825B60W20/40B60W10/26B60W2510/244B60L58/13F02N2200/061F02N2200/101F02N2200/102B60W10/06B60W30/18018F02D17/04F02D29/02F02D41/042F02D2200/503F02D2200/60F02N11/0803F02N11/0811B60W10/30B60W30/18072B60W2030/18081B60W2510/242B60W2520/10B60W2540/10B60W2710/305Y02T10/40Y02T10/70
InventorDUDAR, AED
OwnerFORD GLOBAL TECH LLC