Starting apparatus for internal combustion engines
First Claim
1. An apparatus for starting an engine having a starter motor, said apparatus comprising:
- means in electrical connection with said starter motor for activating said starter motor; and
means in electrical connection with said activating means and said starter motor for sensing electrical current drawn by said starter motor, said sensing means including a filter in electrical connection with a transducer, said transducer issuing an analog voltage signal related to said electrical current when sensing said electrical current drawn by said starter motor to said filter, said activating means includingcomparing means in electrical connection with said filter for comparing the filtered analog voltage signal to a preselected value, said comparing means issuing an output signal when said filtered analog voltage signal is less than or equal to said preselected value.
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Accused Products
Abstract
An internal combustion engine starting apparatus uses a signal from a curt sensor to determine when the engine is energized and the starter motor should be de-energized. One embodiment comprises a transmitter, receiver, computer processing unit, current sensor and relays to energize a starter motor and subsequently de-energize the same when the engine is running. Another embodiment comprises a switch, current transducer, low-pass filter, gain/comparator, relay and a plurality of switches to energize and de-energize a starter motor. Both embodiments contain an indicator lamp or speaker which alerts an operator as to whether a successful engine start has been achieved. Both embodiments also contain circuitry to protect the starter and to de-energize the engine.
55 Citations
19 Claims
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1. An apparatus for starting an engine having a starter motor, said apparatus comprising:
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means in electrical connection with said starter motor for activating said starter motor; and means in electrical connection with said activating means and said starter motor for sensing electrical current drawn by said starter motor, said sensing means including a filter in electrical connection with a transducer, said transducer issuing an analog voltage signal related to said electrical current when sensing said electrical current drawn by said starter motor to said filter, said activating means including comparing means in electrical connection with said filter for comparing the filtered analog voltage signal to a preselected value, said comparing means issuing an output signal when said filtered analog voltage signal is less than or equal to said preselected value. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for starting an internal combustion engine, said internal combustion engine having a starter motor, said starter motor drawing an electrical current when energized, said apparatus comprising:
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means for issuing a start signal and a stop signal; means in electrical connection with said issuing means for activating said starter motor, said activating means generating a first output signal to energize said starter motor in response to receipt of said start signal firm said issuing means and generating a second output signal in response to receipt of said stop signal; means in electrical connection with said activating means and said starter motor for sensing an electrical current drawn by said starter motor, said sensing means further comprising; transducing means in electrical connection with said starter motor, said transducing means issuing an analog electrical signal when sensing said electrical current in said starter motor; a filter in electrical connection with said transducing means, said filter filtering high frequencies from said analog electrical signal; comparing means in electrical connection with said filter for comparing the filtered analog electrical signal to a proselected value, said comparing means issuing said second output signal when said filtered analog electrical signal is less than or equal to said proselected value; and means in electrical connection with said activating means and said starter motor for de-energizing said starter motor in response to receipt of said second output signal from said activating means. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An apparatus for starting an engine having a starter motor, said apparatus comprising:
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means for controlling said starter motor, said controlling means activating and deactivating said starter motor in response to signals from a user; and a transducer in electrical connection with said controlling means for sensing electrical current drawn by said starter motor, said transducer issuing an electrical signal to said controlling means related to said electrical current, a filter in electrical communication with said transducer for filtering said electrical signals; said controlling means deactivating said starter motor when the filtered electrical signal is less than or equal to a proselected value that indicates said engine has started. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification