Patent EP0710787A2 successfully refreshed from Google Patents.
EP0710787A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Starting system with energy recovery for automotive vehicles
Assignee: Aisin AW Co Ltd
•
Filing: 1995-10-31
•
Granted: —
•
Expires: 2015-10-31
Abstract
Abstract A starting system for a vehicle which during starting can effect smooth starting and furthermore can convert into electrical energy and store in a battery excess kinetic energy accompanying the difference in speed between the engine and the driving wheels occurring during starting comprises: a gearbox (18), having at least a first gear element (5) connected to an output shaft (12) of an engine (11), a second gear element (P) connected to a driving wheel of a vehicle and a third gear element (R) connected to an electric rotary device (51,52); an accumulator; engine load detecting means for detecting an engine load; speed detecting means for detecting the speed of at least one of the gear elements of the gearbox and outputting a speed signal; and a control unit. Each time the vehicle starts moving, excess kinetic energy is converted into electrical energy by the electric rotary device and can be stored in a battery and used to run electrical equipment of the vehicle or auxiliary equipment of the engine or to drive the electric rotary device. As a result, fuel consumption can be improved.
Inventors
- 👤 Kazumasa Tsukamoto
- 👤 Takeshi Inuzuka
- 👤 Masashi Hattori
- 👤 Takuji Taniguchi
- 👤 Haruki Takemoto
- 👤 Kozo Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 09:56
CPC Classifications
B; B60; B60W; B60W20/00; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/36; B60K6/365; B60K6/38; B60K6/383; B60K6/42; B60K6/48; B60K6/50; B60K6/54; B60K6/547; B60T; B60T1/00; B60T1/02; B60T1/10; B60T8/00; B60W10/00; B60W10/04; B60W10/06; B60W10/08; B60W10/18; B60W10/24; B60W10/26; B60W30/00; B60W30/18; B60W30/18009; B60W30/18027; B60W30/18063; B60L; B60L2240/00; B60L2240/40; B60L2240/44; B60L2240/441; B60L2240/48; B60L2240/486; B60W2510/00; B60W2510/06; B60W2510/0604; B60W2510/0638; B60W2510/10; B60W2510/1015; B60W2510/104; B60W2510/24; B60W2510/242; B60W2510/244; B60W2540/00; B60W2540/12; B60W2710/00; B60W2710/06; B60W2710/0644; F; F16; F16H; F16H3/00; F16H3/44; F16H3/72; F16H3/724; F16H59/00; F16H59/14; F16H59/18; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/904; Y10S903/909; Y10S903/91; Y10S903/912; Y10S903/913; Y10S903/915; Y10S903/917; Y10S903/919; Y10S903/946; Y10S903/947
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
245 words
A starting system comprising: a gearbox, having at least a first gear element connected to an output shaft of an engine, a second gear element connected to a driving wheel of a vehicle and a third gear element, for by applying a braking torque to the third gear element reducing the speed of a rotation inputted from the first gear element and outputting it to the second gear element; an engaging element connected to any of the gear elements for being selectively engaged and mechanically connecting the output shaft of the engine to the driving wheel; an electric rotary device connected to the third gear element; an accumulator; engine load detecting means for detecting an engine load; speed detecting means for detecting the speed of at least one of the gear elements of the gearbox and outputting a speed signal; and a control unit comprising electric rotary device controlling means for setting a target speed of the first gear element based on the engine load and bringing the speed of the first gear element obtained from the speed signal to the target speed by driving the electric rotary device and causing the electric rotary device to generate a braking torque and engaging element engaging and disengaging means for comparing the speed of a gear element other than the first gear element obtained from the speed signal with set values for engaging and disengaging and engaging and disengaging the engaging element based on the comparison results.
Claim 2
Dependent Claim
32 words
A starting system according to claim 1 wherein: the set values for engaging and disengaging are set in correspondence with the engine load and are higher the greater the engine load is.
Claim 3
Dependent Claim
108 words
A starting system according to claim 1 or 2 further comprising: operating means for selecting a driving state and a non-driving state of the vehicle; vehicle speed detecting means for detecting the speed of the vehicle, wherein the electric rotary device controlling means is provided with braking torque setting up means for driving the electric rotary device and setting up a braking torque when a driving state of the vehicle is selected by means of the operating means and the engine load detected by the engine load detecting means is substantially zero and the vehicle speed detected by the vehicle speed detecting means is below a set value.
Claim 4
Dependent Claim
93 words
A system according to claim 1, 2, or 3 further comprising: brake detecting means for detecting depression of a brake pedal; and vehicle speed detecting means for detecting the speed of the vehicle, wherein the electric rotary device controlling means makes the braking torque generated by the electric rotary device zero when depression of the brake pedal is detected by the brake detecting means, the engine load detected by the engine load detecting means is substantially zero and the vehicle speed detected by the vehicle speed detecting means is below a set value.
Claim 5
Independent Claim
93 words
A system according to any of claims 1 to 4 wherein: when the engine load detected by the engine load detecting means is substantially zero and the speed of a gear element other than the first gear element obtained from the speed signal is below a set value for release, the engaging element engaging and disengaging means releases the engaging element and the electric rotary device controlling means keeps the speed of a gear element other than the first gear element obtained from the speed signal in a high electricity generation efficiency region.
Claim 6
Independent Claim
85 words
A system according to any of claims 1 to 4 wherein: when the engine load detected by the engine load detecting means is substantially zero and the speed of a gear element other than the first gear element obtained from the speed signal is below a set value for release, the engaging element engaging and disengaging means releases the engaging element and the electric rotary device controlling means keeps the speed of the first gear element obtained from the speed signal above a set value.
Claim 7
Independent Claim
217 words
A system according to any of claims 1 to 6 further comprising: a remaining charge detecting device for monitoring the charge state of the accumulator, wherein when the engine load detected by the engine load detecting means is substantially zero and the speed of a gear element other than the first gear element obtained from the speed signal is below a first set value for release and the charge state of the accumulator monitored by the remaining charge detecting device is poor the engaging element engaging and disengaging means releases the engaging element and the electric rotary device controlling means keeps the speed of a gear element other than the first gear element obtained from the speed signal in a high electricity generation efficiency region, and when the engine load detected by the engine load detecting means is substantially zero and the speed of a gear element other than the first gear element obtained from the speed signal is below a second set value for release and the charge state of the accumulator monitored by the remaining charge detecting device is good the engaging element engaging and disengaging means releases the engaging element and the electric rotary device controlling means keeps the speed of the first gear element obtained from the speed signal above a set value.
Claim 8
Independent Claim
91 words
A system according to any of claims 1 to 7 further comprising: calculating means for calculating a speed difference or a speed ratio of speeds of two gear elements detected by the speed detecting means, wherein when the speed of a gear element other than the first gear element obtained from the speed signal is above a set value for engaging and the speed difference or speed ratio calculated by the calculating means is smaller than a preset deviation constant, the engaging element engaging and disengaging means engages the engaging element.
Claim 9
Dependent Claim
28 words
A starting system according to claim 8 wherein: the deviation constant is set in correspondence with the engine load and is larger the larger the engine load is.
Claim 10
Dependent Claim
66 words
A system according to claim 8 or 9 further comprising: a remaining charge detecting device for monitoring the charge state of the accumulator, wherein the electric rotary device is a generator/motor and the preset deviation constant is set to a small value when the charge state monitored by the remaining charge detecting device is good and to a large value when the charge state is poor.
Claim 11
Independent Claim
72 words
A system according to any of claims 1 to 10 wherein: when the speed of a gear element other than the first gear element obtained from the speed signal is above a set value for engaging and the absolute value of the speed of a gear element other than the first gear element obtained from the speed signal is substantially zero, the engaging element engaging and disengaging means engages the engaging element.
Claim 12
Independent Claim
82 words
A system according to any of claims 1 to 10 wherein: when the speed of a gear element other than the first gear element obtained from the speed signal is above a set value for engaging and the absolute value of the speed of a gear element other than the first gear element obtained from the speed signal is smaller than a set value set in correspondence with the engine load the engaging element engaging and disengaging means engages the engaging element.
Claim 13
Independent Claim
81 words
A system according to any of claims 1 to 12 further comprising: regenerated power detecting means for detecting a regenerated power generated by the electric rotary device, wherein when the speed of a gear element other than the first gear element obtained from the speed signal is above a set value for engaging and the regenerated power detected by the regenerated power detecting means is smaller than a set value the engaging element engaging and disengaging means engages the engaging element.
Claim 14
Independent Claim
18 words
A system according to any of claims 1 to 13 wherein: the electric rotary device is a generator.
Claim 15
Independent Claim
16 words
A system according to claims 1 to 13 wherein: the electric rotary device is a generator/motor.
Claim 16
Dependent Claim
43 words
A starting system according to claim 15 wherein: when engaging of the engaging element by the engaging element engaging and disengaging means has been completed the electric rotary device controlling means reduces a braking torque generated by the generator/motor by a set rate.
Claim 17
Dependent Claim
43 words
A system according to claim 15 or 16 wherein: from the start of engaging of the engaging element by the engaging element engaging and disengaging means to the completion thereof the electric rotary device controlling means reduces the braking torque of the generator/motor.
Claim 18
Dependent Claim
28 words
A system according to claim 15, 16, or 17 further comprising: a one-way clutch for transmitting a rotation of the generator/motor to the output shaft of the engine.
Claim 19
Dependent Claim
34 words
A system according to claim 15, 16, or 17 wherein: the engaging element is a clutch of normally closed type and transmits a rotation of the generator/motor to the output shaft of the engine.
Claim 20
Independent Claim
74 words
A system according to any of claims 15 to 19 wherein: when the difference between a power obtained from regeneration by the generator/motor and a power consumed in driving the generator/motor is smaller than a set value and the speed of a gear element other than the first gear element obtained from the speed signal is larger than a set value for engaging, the engaging element engaging and disengaging means engages the engaging element.
Claim 21
Dependent Claim
239 words
A starting system comprising: a gearbox, having at least a first gear element connected to an output shaft of an engine, a second gear element connected to a driving wheel of a vehicle and a third gear element, for by applying a braking torque to the third gear element reducing the speed of a rotation inputted from the first gear element and outputting it to the second gear element; an engaging element connected to any of the gear elements for being selectively engaged and mechanically connecting the output shaft of the engine to the driving wheel; an electric rotary device connected to the third gear element; an accumulator; engine load detecting means for detecting an engine load; speed detecting means for detecting the speed of at least one of the gear elements of the gearbox and outputting a speed signal; and a control unit comprising electric rotary device controlling means for setting a target speed of the first gear element based on the engine load and bringing the speed of the first gear element obtained from the speed signal to a target speed by driving the electric rotary device and causing the electric rotary device to generate a braking torque and engaging element engaging and disengaging means for comparing the speed of the first gear element when the engaging element has been engaged with a set value for disengaging and disengaging the engaging element based on the comparison results.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.