Alternator load shedder for engine starting improvement
First Claim
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1. A system, within an electrical starting system for an internal combustion engine, for preventing mechanical loading by an engine driven alternator until said engine operates at least in its idle condition for a finite predetermined period of time comprising:
- means connected to said engine for sensing the operational condition of said engine and producing an output when said engine maintains its idle condition for a predetermined finite period of time;
means connected to said sensing means for inhibiting the field current in said alternator in the absence of said output from said sensing means and for allowing normal field current to flow in said alternator when said output is produced.
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Abstract
A method and system for delaying mechanical loading of an internal combustion engine by an alternator during start-up and transitional phases of the engine by inhibiting the field winding current of the alternator until the engine reaches a predetermined operational condition for a continuous predetermined period of time.
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Citations
8 Claims
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1. A system, within an electrical starting system for an internal combustion engine, for preventing mechanical loading by an engine driven alternator until said engine operates at least in its idle condition for a finite predetermined period of time comprising:
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means connected to said engine for sensing the operational condition of said engine and producing an output when said engine maintains its idle condition for a predetermined finite period of time; means connected to said sensing means for inhibiting the field current in said alternator in the absence of said output from said sensing means and for allowing normal field current to flow in said alternator when said output is produced. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of delaying loading of an internal combustion engine caused by a mechanically connected alternator including the steps of:
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opening the field winding circuit of said alternator; starting said engine; sensing the operational condition of said engine immediately after said engine is started; and closing the field winding circuit of said alternator when the operational condition of said engine is sensed to be above a predetermined level for a predetermined period of time. - View Dependent Claims (8)
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Specification