Control apparatus and control method of generator for vehicle
First Claim
1. A control apparatus of a generator for vehicle that includes a field coil and controls an output of the generator rotationally driven by an engine by changing duty ratio of an exciting current flowing through said field coil in conformity with increase or decrease in electric load:
- said control apparatus comprising;
means of calculating a target exciting current duty ratio on the basis of a duty ratio of an exciting current flowing through said field coil and operating condition information of said engine;
means of calculating a target exciting current duty ratio limit value corresponding to a drive torque limit value of said generator on the basis of an output of correlative information detecting means that detects information correlative to atmosphere temperature of said generator; and
means of limiting a duty ratio of exciting current flowing through said field coil by limiting a value of said target exciting current duty ratio on the basis of said target exciting current duty ratio limit value.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic control apparatus includes target FR calculator that calculates a target exciting current duty ratio FR based on an exciting current inputted from FR terminal of a regulator and flowing through field coil, and information of engine operating conditions. The electronic control apparatus also includes target FR limit value FRCLP calculator that calculates a FRCLP corresponding to a drive torque limit value based on an output of a correlative information detector. A comparator compares target FR and FRCLP, outputs a control signal within FRCLP to a control unit, and controls a duty ratio FR of exciting current flowing through a field coil not to be larger than FRCLP.
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Citations
7 Claims
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1. A control apparatus of a generator for vehicle that includes a field coil and controls an output of the generator rotationally driven by an engine by changing duty ratio of an exciting current flowing through said field coil in conformity with increase or decrease in electric load:
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said control apparatus comprising;
means of calculating a target exciting current duty ratio on the basis of a duty ratio of an exciting current flowing through said field coil and operating condition information of said engine;
means of calculating a target exciting current duty ratio limit value corresponding to a drive torque limit value of said generator on the basis of an output of correlative information detecting means that detects information correlative to atmosphere temperature of said generator; and
means of limiting a duty ratio of exciting current flowing through said field coil by limiting a value of said target exciting current duty ratio on the basis of said target exciting current duty ratio limit value. - View Dependent Claims (2, 3, 4, 5)
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6. A control method of a generator for vehicle that includes a field coil and controls an output of the generator rotationally driven by an engine by changing duty ratio of an exciting current flowing through said field coil in conformity with increase or decrease in electric load:
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said control method comprising the steps of;
calculating a target exciting current duty ratio on the basis of a duty ratio of an exciting current flowing through said field coil and operating condition information of said engine;
calculating a target exciting current duty ratio limit value corresponding to a drive torque limit value of said generator on the basis of an output of correlative information detecting means that detects information correlative to atmosphere temperature of said generator; and
limiting a duty ratio of exciting current flowing through said field coil by limiting a value of said target exciting current duty ratio on the basis of said target exciting current duty ratio limit value. - View Dependent Claims (7)
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Specification