Vehicle engine starting system and method
AssigneeNissan Motor Co., Ltd.
InventorsKouji Manabe, Kazuhira Kobayashi
Life of this patent
Estimating the term…
Abstract
A vehicle engine starting system that drives a starter motor engaged to start an engine by using a lithium secondary battery as a power source comprises a voltage sensor that detects a voltage at the secondary battery and a control device that allows power to be discharged from the secondary battery to the starter motor if the voltage at the secondary battery detected by the voltage sensor is equal to or higher than a predetermined value and disallows a discharge from the secondary battery to the starter motor if the voltage at the secondary battery detected by the voltage sensor is lower than the predetermined value.
Claims10
A vehicle engine starting method for driving a starter motor by using a battery as a power source, comprising:
- detecting a voltage at said battery;
- comparing the detected voltage at said battery with a predetermined value;
- and
- allowing a discharge from said battery to said starter motor if the detected voltage at said battery is equal to or higher than the predetermined value, and disallowing a discharge from said battery to said starter motor if the detected voltage is lower than the predetermined value.
A vehicle engine starting method for supplying power in a battery to a starter motor engaged to start an engine via a key switch and a starter relay, comprising an engine start procedure including:
- detecting a voltage at said battery;
- comparing the detected voltage at said battery with a predetermined value;
- setting said starter relay in an on-enabled state if the detected voltage at said battery is equal to or higher than the predetermined value and setting said starter relay in an on-disabled state if the detected voltage is lower than the predetermined value;
- and
- turning on said starter relay to discharge power from said battery to said starter motor as said key switch is set to a start position while said starter relay is in the on-enabled state, wherein:
- said engine start procedure is repeated until the engine is started.
A vehicle engine starting method for supplying power in a battery to a starter motor engaged to start an engine via a key switch and a starter relay, comprising an engine start procedure including:
- detecting as to whether or not said key switch is at a start position;
- detecting a voltage at said battery once said key switch is set to the start position;
- comparing the detected voltage at said battery with a predetermined value;
- and
- turning on said starter relay to discharge power from said battery to said starter motor if the detected voltage at said battery is equal to or higher than the predetermined value, and turning off said starter relay to disallow a discharge from said battery to said starter motor if the detected voltage is lower than the predetermined value, wherein:
- said engine start procedure is repeated until the engine is started.
A vehicle engine starting system for driving a starter motor engaged to start an engine by using a battery as a power source, comprising:
- a voltage sensor that detects a voltage at said battery;
- and
- a control device that allows power to be discharged from said battery to said starter motor if the voltage at said battery detected by said voltage sensor is equal to or higher than a predetermined value and disallows a discharge from said battery to said starter motor if the voltage at said battery detected by said voltage sensor is lower than the predetermined value.
A vehicle engine starting system for driving a starter motor engaged to start an engine by using a battery as a power source, comprising:
- a voltage detection means for detecting a voltage at said battery;
- and
- a control means for allowing power to be discharged from said battery to said starter motor if the voltage at said battery detected by said voltage detection means is equal to or higher than a predetermined value and disallowing a discharge from said battery to said starter motor if the voltage at said battery detected by said voltage detection means is lower than the predetermined value.
Dependencies are inferred from the claim text.