US6524216B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus of hybrid vehicle
Assignee: Aisin AW Co Ltd
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Filing: 2001-09-17
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Granted: 2003-02-25
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Expires: 2021-09-17
Abstract
Abstract When a driver depresses an accelerator pedal to request a shift such as a downshift or the like, a maximum shift target changing rate (shift speed) of a CVT having a belt-type continuously variable shift apparatus is set based on the shift inertia of the CVT and the like. An assist torque is set by subtracting the normal torque of an internal combustion engine from a torque needed to achieve the maximum shift target changing rate. The assist torque and the torque outputtable from an electric motor based on the characteristic of the motor are compared. If the assist torque is greater than the motor torque, the target changing rate is restricted by an assist possible rate based on the ratio between the assist torque and the motor torque. The shift of the CVT is controlled by the target changing rate (shift speed). Thus, the apparatus allows a quick speed by assisting with a motor torque and, in a case where the assist torque from the motor is insufficient in quantity, allows a shift at a speed in accordance with the case, thereby resolving the degradation of acceleration feel caused by the shift inertia of the CVT.
Inventors
- 👤 Takehiko Suzuki
- 👤 Masashi Hattori
- 👤 Kazuo Takemoto
- 👤 Satoru Wakuta
- 👤 Takeshi Inuzuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:28
CPC Classifications
B; B60; B60W; B60W20/00; B60W20/30; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/36; B60K6/365; B60K6/42; B60K6/48; B60K6/485; B60K6/50; B60K6/54; B60K6/543; B60W10/00; B60W10/04; B60W10/08; B60W10/10; F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; F16H61/66254; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/904; Y10S903/905; Y10S903/906; Y10S903/909; Y10S903/91; Y10S903/915; Y10S903/917; Y10S903/918; Y10S903/945; Y10S903/951; Y10S903/952
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
134 words
A hybrid vehicle control apparatus for a hybrid vehicle including an internal combustion engine and an electric motor as drive power sources and including a continuously variable transmission as a transmission for transferring a drive power to a drive wheel, the hybrid vehicle control comprising: means for setting a maximum shift target changing rate of the continuously variable transmission based on a shift request from an operating person; means for setting an assist torque needed for achieving the maximum shift target changing rate; means for comparing the assist torque and a torque outputtable by the electric motor; and means for restricting a target changing rate of the continuously variable transmission based on a ratio between the assist torque and the electric motor torque if the assist torque is greater than the electric motor torque.
Claim 2
Dependent Claim
134 words
A hybrid vehicle control apparatus for a hybrid vehicle including an internal combustion engine and an electric motor as drive power sources and including a continuously variable transmission as a transmission for transferring a drive power to a drive wheel, the hybrid vehicle control comprising: means for setting a maximum shift target changing rate of the continuously variable transmission based on a shift request from an operating person; means for setting an assist torque needed for achieving the maximum shift target changing rate; means for comparing the assist torque and a torque outputtable by the electric motor; and means for restricting a target changing rate of the continuously variable transmission based on a ratio between the assist torque and the electric motor torque if the assist torque is greater than the electric motor torque.
Claim 3
Dependent Claim
44 words
A hybrid vehicle control apparatus as defined in claim 1 , wherein the continuously variable transmission has a belt-type continuously variable shift apparatus, and the maximum shift target changing rate is set based on a shift inertia of the belt-type continuously variable shift apparatus.
Claim 4
Dependent Claim
23 words
A hybrid vehicle control apparatus as defined in claim 2 , wherein the shift request from the operating person is for a downshift.
Claim 5
Dependent Claim
74 words
A hybrid vehicle control apparatus as defined in claim 3 , wherein the continuously variable transmission has a torque converter, and wherein the electric motor is contained together with the torque converter within a converter housing, and is disposed on an outer peripheral portion of a front cover of the torque converter, and a rotor of the electric motor is connected to the front cover and an output shaft of the internal combustion engine.
Claim 6
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 4 , wherein the electric motor is a motor generator.
Claim 7
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 3 , wherein the electric motor is a motor generator.
Claim 8
Dependent Claim
74 words
A hybrid vehicle control apparatus as defined in claim 2 , wherein the continuously variable transmission has a torque converter, and wherein the electric motor is contained together with the torque converter within a converter housing, and is disposed on an outer peripheral portion of a front cover of the torque converter, and a rotor of the electric motor is connected to the front cover and an output shaft of the internal combustion engine.
Claim 9
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 7 , wherein the electric motor is a motor generator.
Claim 10
Dependent Claim
79 words
A hybrid vehicle control apparatus as defined in claim 2 , wherein the continuously variable transmission includes a torque converter, a forward-reverse switching apparatus, and a primary pulley of the belt-type continuously variable shift apparatus that are disposed on a first axis aligned with an output shaft of the internal combustion engine, and wherein a secondary pulley of the belt-type continuously variable shift apparatus, and the electric motor are disposed on a second axis parallel to the first axis.
Claim 11
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 9 , wherein the electric motor is a motor generator.
Claim 12
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 2 , wherein the electric motor is a motor generator.
Claim 13
Dependent Claim
23 words
A hybrid vehicle control apparatus as defined in claim 1 , wherein the shift request from the operating person is for a downshift.
Claim 14
Dependent Claim
74 words
A hybrid vehicle control apparatus as defined in claim 12 , wherein the continuously variable transmission has a torque converter, and wherein the electric motor is contained together with the torque converter within a converter housing, and is disposed on an outer peripheral portion of a front cover of the torque converter, and a rotor of the electric motor is connected to the front cover and an output shaft of the internal combustion engine.
Claim 15
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 13 , wherein the electric motor is a motor generator.
Claim 16
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 12 , wherein the electric motor is a motor generator.
Claim 17
Dependent Claim
74 words
A hybrid vehicle control apparatus as defined in claim 1 , wherein the continuously variable transmission has a torque converter, and wherein the electric motor is contained together with the torque converter within a converter housing, and is disposed on an outer peripheral portion of a front cover of the torque converter, and a rotor of the electric motor is connected to the front cover and an output shaft of the internal combustion engine.
Claim 18
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 16 , wherein the electric motor is a motor generator.
Claim 19
Dependent Claim
19 words
A hybrid vehicle control apparatus as defined in claim 1 , wherein the electric motor is a motor generator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-02-24 | 2006-08-26 | 2007-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-24 | 2010-08-26 | 2011-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-24 | 2014-08-26 | 2015-02-25 | $7700.00 | Window Closed / Lapsed |