System and methods for improved starting of combustion engines
First Claim
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1. An engine start system, comprising:
- a capacitor system comprising one or more capacitors;
one or more booster batteries connected in parallel with the capacitor system, the one or more booster batteries configured to be connected in parallel with a primary battery system of an engine;
a switch connected to the one or more booster batteries and configured to selectively control electrical communication between the one or more booster batteries and the primary battery system; and
a controller configured to detect a battery voltage of the primary battery system, the controller configured to;
move the switch to an open state and disconnect the one or more booster batteries from the primary battery system when the battery voltage is below a first target voltage;
move the switch from the open state to a closed state and connect the one or more booster batteries to the primary battery system when the battery voltage is at or above a second target voltage, and in response to an external input; and
after a predetermined period of time, return the switch from the closed state to the open state if the battery voltage is below the second target voltage, or maintain the switch in the closed state if the battery voltage is at or above the second target voltage.
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Abstract
This disclosure provides systems, methods and apparatus for a engine start system. In one aspect, the engine start system includes: a booster battery selectively connected in parallel with the primary batteries of the engine. The booster battery is disconnected when the battery voltage of the primary batteries is below a first target voltage. The booster battery is connected when the battery voltage of the primary batteries is at or above the second target voltage, or in response to an external input.
58 Citations
29 Claims
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1. An engine start system, comprising:
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a capacitor system comprising one or more capacitors; one or more booster batteries connected in parallel with the capacitor system, the one or more booster batteries configured to be connected in parallel with a primary battery system of an engine; a switch connected to the one or more booster batteries and configured to selectively control electrical communication between the one or more booster batteries and the primary battery system; and a controller configured to detect a battery voltage of the primary battery system, the controller configured to; move the switch to an open state and disconnect the one or more booster batteries from the primary battery system when the battery voltage is below a first target voltage; move the switch from the open state to a closed state and connect the one or more booster batteries to the primary battery system when the battery voltage is at or above a second target voltage, and in response to an external input; and after a predetermined period of time, return the switch from the closed state to the open state if the battery voltage is below the second target voltage, or maintain the switch in the closed state if the battery voltage is at or above the second target voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of operating an engine start system, comprising:
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providing one or more booster batteries connected in parallel with a capacitor system and a primary battery system; detecting a battery voltage of the primary battery system; disconnecting the one or more booster batteries from the primary battery system when the battery voltage is below a first target voltage; connecting the one or more booster batteries to the primary battery system when the primary battery voltage is at or above a second target voltage, or in response to an external input; disconnecting the one or more booster batteries from the primary battery system in response to the external input; and after a predetermined period of time, disconnecting the one or more booster batteries from the primary battery system if the battery voltage is below the second target voltage, or connecting and maintaining the connection between the one or more booster batteries and the primary battery system if the battery voltage is at or above the second target voltage. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification