IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0386780
(2006-03-23)
|
등록번호 |
US-7368892
(2008-05-06)
|
우선권정보 |
JP-2005-084893(2005-03-23) |
발명자
/ 주소 |
- Uematsu,Tadashi
- Teramoto,Toshiyo
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
2 |
초록
▼
A generation control apparatus for vehicles is provided, in which a drastic change in the drive torque of a generator, which occurs with the cancellation of gradual excitation immediately after starting an internal combustion engine, can be suppressed to prevent stoppage of the internal combustion e
A generation control apparatus for vehicles is provided, in which a drastic change in the drive torque of a generator, which occurs with the cancellation of gradual excitation immediately after starting an internal combustion engine, can be suppressed to prevent stoppage of the internal combustion engine. The generation control apparatus includes an engine-start detection circuit, a gradual excitation circuit, a comparator for gradual-excitation cancellation, and a masking circuit for gradual-excitation cancellation. After detecting an engine start by the engine-start detection circuit, an instruction for gradual-excitation cancellation is released during an initial gradual excitation performed by a gradual excitation circuit, based on an output from the masking circuit for gradual-excitation cancellation. The drastic change in the drive torque occurring with the cancellation of the gradual excitation immediately after the engine start, can thus be suppressed, thereby preventing the engine stop.
대표청구항
▼
What is claimed is: 1. An apparatus for controlling power to be generated by a generator driven by an internal combustion engine, the apparatus comprising: excitation current control means for controlling an excitation current to be fed to the generator so that the generator produces the power whos
What is claimed is: 1. An apparatus for controlling power to be generated by a generator driven by an internal combustion engine, the apparatus comprising: excitation current control means for controlling an excitation current to be fed to the generator so that the generator produces the power whose voltage is set to a first predetermined voltage value; gradual excitation means for exciting current to increase gradually when the excitation current is controlled by the excitation current control means; gradual-excitation cancellation means for canceling the gradual excitation in cases where the voltage of the power generated by the generator becomes less than a second predetermined voltage value lower than the first predetermined voltage value during the gradual excitation performed by the gradual excitation means; start detecting means for detecting that the internal combustion engine has been started; and gradual-excitation cancellation inhibiting means for inhibiting the gradual-excitation cancellation to be performed by the gradual-excitation cancellation means, during the gradual excitation first performed by the gradual excitation means which comes after the start of the internal combustion engine to be detected by the start detecting means. 2. The apparatus of claim 1, wherein the generator is mounted on a vehicle. 3. The apparatus of claim 1, wherein the gradual-excitation cancellation inhibiting means comprises inhibition releasing means for releasing the inhibition of the gradual-excitation cancellation on the basis of either the voltage of the power to be generated or the excitation current. 4. The apparatus of claim 3, wherein the inhibition releasing means is configured to release the inhibition of the gradual-excitation cancellation in cases where the voltage of the power to be generated exceeds the first predetermined voltage value. 5. The apparatus of claim 3, wherein the inhibition releasing means is configured to release the inhibition of the gradual-excitation cancellation in cases where the excitation current exceeds a predetermined current value. 6. The apparatus of claim 5, wherein the excitation current control means is configured to control the excitation current by adjusting an active-period rate at which the excitation current becomes active and the inhibition releasing means include means for deciding an amplitude of the excitation current based on the active-period rate of the excitation current. 7. An apparatus for controlling power to be generated by a generator driven by an internal combustion engine, the apparatus comprising: an excitation current control unit controlling an excitation current to be fed to the generator so that the generator produces the power whose voltage is set to a first predetermined voltage value; a gradual excitation unit exciting current to increase gradually when the excitation current is controlled by the excitation current control unit; a gradual-excitation cancellation unit canceling the gradual excitation in cases where the voltage of the power generated by the generator becomes less than a second predetermined voltage value lower than the first predetermined voltage value during the gradual generation performed by the gradual excitation unit; a start detecting unit detecting that the internal combustion engine has been started; and a gradual-excitation cancellation inhibiting unit inhibiting the gradual-excitation cancellation to be performed by the gradual-excitation cancellation unit, during the gradual excitation first performed by the gradual excitation unit which comes after the start of the internal combustion engine to be detected by the start detecting unit. 8. The apparatus of claim 7, wherein the generator is mounted on a vehicle. 9. The apparatus of claim 7, wherein the start detecting unit is configured to detect the start of the internal combustion engine based on an amplitude of the voltage of the power generated by the generator. 10. The apparatus of claim 7, wherein the start detecting unit is configured to detect the start of the internal combustion engine based on a frequency of the voltage of the power generated by the generator. 11. The apparatus of claim 7, wherein the gradual-excitation cancellation inhibiting unit comprises an inhibition releasing unit releasing the inhibition of the gradual-excitation cancellation on the basis of either the voltage of the power to be generated or the excitation current. 12. The apparatus of claim 11, wherein the inhibition releasing unit is configured to release the inhibition of the gradual-excitation cancellation in cases where the voltage of the power to be generated exceeds the first predetermined voltage value. 13. The apparatus of claim 11, wherein the inhibition releasing unit is configured to release the inhibition of the gradual-excitation cancellation in cases where the excitation current exceeds a predetermined current value. 14. The apparatus of claim 13, wherein the excitation current control unit is configured to control the excitation current by adjusting an active-period rate at which the excitation current becomes active and the inhibition releasing unit include means for deciding an amplitude of the excitation current based on the active-period rate of the excitation current. 15. The apparatus of claim 14, wherein the gradual-excitation cancellation inhibiting unit comprises a masking circuit providing a signal for masking an output of the gradual-excitation canceling unit, on the basis of an output of the start detecting unit; and a selective output circuit selectively outputting the output of the gradual-excitation canceling unit, on the basis of the masking signal from the masking circuit. 16. The apparatus of claim 15, wherein the masking circuit comprises a determining circuit configured to make a comparison between an on-duty ratio of an output of the gradual excitation unit and a reference on-duty ratio which is preset, whereby the determining circuit outputs a first-logical-level signal in response to a determination that the on-duty ratio of the output of the gradual excitation unit is larger than the dereference on-duty ratio and a second-logical-level signal in response to a determination that the on-duty ratio of the output of the gradual excitation unit is equal to or less than the reference on-duty ratio; and a sequence circuit configured to respond to not only the output of the start detecting unit such that the sequence circuit is reset to output a signal of the second-logical-level but also either the voltage of the power to be generated or, based on the output of the gradual excitation unit, an output of the determining circuit such that the sequence circuit is made set, in response to a situation in which the voltage of the power to be generated exceeds the first predetermined voltage value or the output of the determining circuit is at the first-logical level, so as to output a signal of the first-logical level to the selective output circuit. 17. A method of controlling power to be generated by a generator driven by an internal combustion engine, comprising steps of: controlling an excitation current to be fed to the generator so that the generator produces the power whose voltage is set to a first predetermined voltage value; enabling the excitation current to increase gradually when the excitation current is controlled; canceling the gradual excitation in cases where the voltage of the power generated by the generator becomes less than a second predetermined voltage value lower than the first predetermined voltage value during the gradual excitation; detecting that the internal combustion engine has been started; and inhibiting the gradual-excitation cancellation to be performed, during the gradual excitation first performed in the gradual excitation step which comes after the start of the internal combustion engine to be detected in the start detecting step. 18. The method of claim 17, wherein the gradual-excitation cancellation inhibiting step includes a step of releasing the inhibition of the gradual-excitation cancellation on the basis of either the voltage of the power to be generated or the excitation current.
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