Engine stop-start auxiliary battery disconnect detection
First Claim
1. A system for controlling an automatic engine stop-start system of a vehicle, comprising:
- a controller;
an engine configured to be automatically stopped and started in response to a signal from the controller;
a primary power source electrically coupled to the controller;
an auxiliary power source electrically coupled to the controller; and
a power control relay electrically connected between the primary power source and the auxiliary power source, the power control relay configured to be selectively activated to isolate the auxiliary power source from the primary power source such that only the auxiliary power source is configured to supply power to the controller;
wherein the controller is configured to determine if the auxiliary power source is electrically disconnected from the vehicle when the power control relay is activated, and when the controller determines the auxiliary power source is electrically disconnected from the vehicle, disable the automatic engine stop-start system such that the vehicle is prevented from an automatic engine stop-start function.
1 Assignment
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Accused Products
Abstract
A system for controlling an automatic engine stop-start system of a vehicle includes a controller, an engine configured to be automatically stopped and started in response to a signal from the controller, a primary power source electrically coupled to the controller, and an auxiliary power source electrically coupled to the controller. A power control relay is electrically connected between the primary power source and the auxiliary power source and is configured to be selectively activated to isolate the auxiliary power source from the primary power source such that only the auxiliary power source is configured to supply power to the controller. The controller is configured to determine if the auxiliary power source is electrically disconnected from the vehicle when the power control relay is activated.
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Citations
13 Claims
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1. A system for controlling an automatic engine stop-start system of a vehicle, comprising:
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a controller; an engine configured to be automatically stopped and started in response to a signal from the controller; a primary power source electrically coupled to the controller; an auxiliary power source electrically coupled to the controller; and a power control relay electrically connected between the primary power source and the auxiliary power source, the power control relay configured to be selectively activated to isolate the auxiliary power source from the primary power source such that only the auxiliary power source is configured to supply power to the controller; wherein the controller is configured to determine if the auxiliary power source is electrically disconnected from the vehicle when the power control relay is activated, and when the controller determines the auxiliary power source is electrically disconnected from the vehicle, disable the automatic engine stop-start system such that the vehicle is prevented from an automatic engine stop-start function. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling an automatic engine stop-start system of a vehicle having an engine, a controller, a primary power source and an auxiliary power source electrically connected to the controller, and a power control relay electrically connected between the primary and auxiliary power sources, the method comprising:
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activating the power control relay to isolate the auxiliary power source from the primary power source such that only the auxiliary power source is configured to supply power to the controller; determining the auxiliary power source is electrically disconnected from the vehicle if the controller loses power when the power control relay is activated; and disabling the automatic engine stop-start system when it is determined the auxiliary power source is electrically disconnected from the vehicle. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification