US5657829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid control system for limiting engine output
Assignee: Toyoda Koki KK
•
Filing: 1995-07-10
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Granted: 1997-08-19
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Expires: 2015-07-10
Abstract
Abstract A traction control system combines engine output power limiting with a single point brake for controlling wheel slip. The brake is preferably connected to the engine to reduce torque requirements and avoid drive line shock. One friction member of the preferred brake is coupled to the engine block, and another friction member member is coupled together with a drive pulley to the engine output shaft. An electromagnetic actuator moves the two friction members into engagement with each other within a hollow interior of the drive pulley.
Inventors
- 👤 Kenneth A. May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:18
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/175; B60T13/00; B60T13/74; B60T13/748; B60T8/32; B60T8/3205; B60W; B60W10/00; B60W10/04; B60W10/06; B60W10/18; B60W30/00; B60W30/18; B60W30/18172; F; F16; F16D; F16D55/00; B60T2270/00; B60T2270/20; B60T2270/203; F16D2055/0004; F16D2055/0058; F16D2121/00; F16D2121/18; F16D2121/20
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
238 words
A hybrid control system for limiting output of a motor vehicle engine comprising: a power train originating at an engine for generating output power and extending from said engine in a first direction to at least one auxiliary device that consumes a portion of the output power and in another direction through a differential that apportions the remaining output power between at least a pair of drive wheels; said engine having a block and a relatively rotatable output shaft that transmits the output power to the power train; an engine output power controller that regulates generation of the output power by the engine; a brake positioned along said power train between said auxiliary device and said differential for regulating the transmission of the output power along said power train to the pair of drive wheels; a sensor that detects a vehicle operating condition; a control system that responds to the detection of the vehicle operating condition by engaging both said engine controller and said brake for reducing the output power transmitted to the drive wheels; a first member of said brake being fixed against relative rotation with respect to said engine block; a second member of said brake being at least indirectly connected to said engine output shaft; and said first and second brake members being relatively engageable by said control system for producing resistance to rotation of said engine output shaft with respect to said engine block.
Claim 2
Dependent Claim
238 words
A hybrid control system for limiting output of a motor vehicle engine comprising: a power train originating at an engine for generating output power and extending from said engine in a first direction to at least one auxiliary device that consumes a portion of the output power and in another direction through a differential that apportions the remaining output power between at least a pair of drive wheels; said engine having a block and a relatively rotatable output shaft that transmits the output power to the power train; an engine output power controller that regulates generation of the output power by the engine; a brake positioned along said power train between said auxiliary device and said differential for regulating the transmission of the output power along said power train to the pair of drive wheels; a sensor that detects a vehicle operating condition; a control system that responds to the detection of the vehicle operating condition by engaging both said engine controller and said brake for reducing the output power transmitted to the drive wheels; a first member of said brake being fixed against relative rotation with respect to said engine block; a second member of said brake being at least indirectly connected to said engine output shaft; and said first and second brake members being relatively engageable by said control system for producing resistance to rotation of said engine output shaft with respect to said engine block.
Claim 3
Dependent Claim
17 words
The system of claim 1 in which said first brake member is attached to said engine block.
Claim 4
Dependent Claim
29 words
The system of claim 2 in which said engine output shaft extends through an opening in said first brake member for transmitting the output power to said power train.
Claim 5
Dependent Claim
27 words
The system of claim 1 in which said second brake member rotates at a speed at least as great as a speed of said engine output shaft.
Claim 6
Dependent Claim
21 words
The system of claim 4 in which said second brake member rotates at the same speed as said engine output shaft.
Claim 7
Dependent Claim
24 words
The system of claim 5 in which said second brake member is coupled to said engine output shaft for rotation about a common axis.
Claim 8
Dependent Claim
22 words
The system of claim 6 in which said first and second brake members are relatively movable along the common axis into engagement.
Claim 9
Dependent Claim
39 words
The system of claim 1 in which a drive member is coupled to said engine output shaft for transmitting the output power to said auxiliary device and said brake is located between said engine block and said drive member.
Claim 10
Dependent Claim
24 words
The system of claim 8 in which said second brake member is coupled to said engine output shaft for rotation about a common axis.
Claim 11
Dependent Claim
26 words
The system of claim 9 in which said engine output shaft extends through an opening in said first brake member for connection to said drive member.
Claim 12
Dependent Claim
17 words
The system of claim 10 in which said first brake member is attached to said engine block.
Claim 13
Dependent Claim
13 words
The system of claim 11 in which said drive member is a pulley.
Claim 14
Dependent Claim
35 words
The system of claim 1 in which said first brake member includes an electromagnetic coil and said second brake member includes an armature that is attracted toward said first member upon energization of said coil.
Claim 15
Dependent Claim
21 words
The system of claim 13 in which said first and second brake members are biased into a relative position of disengagement.
Claim 16
Dependent Claim
38 words
The system of claim 1 in which said sensor detects wheel slip of at least one drive wheel and said control system responds to the detection of wheel slip by engaging both said engine controller and said brake.
Claim 17
Independent Claim
21 words
The system of clam 15 in which said differential generates frictional resistance to relative rotation between the pair of drive wheels.
Claim 18
Independent Claim
21 words
The system of clam 15 in which said differential generates frictional resistance to relative rotation between the pair of drive wheels.
Claim 19
Dependent Claim
41 words
The system of claim 1 in which said control system responds to the detection of another operating condition that is known to precede the vehicle operating condition by reducing a response time required to engage said first and second brake members.
Claim 20
Dependent Claim
57 words
The system of claim 15 in which at least one of said brake members is responsive to an electric current, and the response time is reduced by applying a predetermined amount of the electric current to said one brake member less than an amount of the electric current required to engage said first and second brake members.
Claim 21
Dependent Claim
34 words
The system of claim 18 in which said another operating condition includes a first threshold of wheel slip below a second threshold of wheel slip at which said control system engages said brake members.
Claim 22
Dependent Claim
187 words
A hybrid control system for a motor vehicle engine comprising: an engine having a block and a relatively rotatable output shaft that transmits output power generated by said engine to a pair of drive wheels; an engine output power controller that regulates the generation of the output power by the engine; a brake that regulates the transmission of the output power to the pair of drive wheels; a sensor that detects a vehicle operating condition; a control system that responds to the detection of the vehicle operating condition by engaging both said engine controller and said brake for reducing the output power transmitted to the drive wheels; a first member of said brake being fixed against relative rotation with respect to said engine block; a second member of said brake being at least indirectly connected to said engine output shaft for rotation at a speed at least as great as a speed of said engine output shaft; and said first and second brake members being relatively engageable by said control system for producing resistance to rotation of said engine output shaft with respect to said engine block.
Claim 23
Dependent Claim
187 words
A hybrid control system for a motor vehicle engine comprising: an engine having a block and a relatively rotatable output shaft that transmits output power generated by said engine to a pair of drive wheels; an engine output power controller that regulates the generation of the output power by the engine; a brake that regulates the transmission of the output power to the pair of drive wheels; a sensor that detects a vehicle operating condition; a control system that responds to the detection of the vehicle operating condition by engaging both said engine controller and said brake for reducing the output power transmitted to the drive wheels; a first member of said brake being fixed against relative rotation with respect to said engine block; a second member of said brake being at least indirectly connected to said engine output shaft for rotation at a speed at least as great as a speed of said engine output shaft; and said first and second brake members being relatively engageable by said control system for producing resistance to rotation of said engine output shaft with respect to said engine block.
Claim 24
Dependent Claim
17 words
The system of claim 20 in which said first brake member is attached to said engine block.
Claim 25
Dependent Claim
29 words
The system of claim 21 in which said engine output shaft extends through an opening in said first brake member for transmitting the output power to said power train.
Claim 26
Dependent Claim
24 words
The system of claim 21 in which said second brake member is coupled to said engine output shaft for rotation about a common axis.
Claim 27
Dependent Claim
21 words
The system of claim 23 in which said second brake member rotates at the same speed as said engine output shaft.
Claim 28
Dependent Claim
22 words
The system of claim 24 in which said first and second brake members are relatively movable along the common axis into engagement.
Claim 29
Dependent Claim
36 words
The system of claim 20 in which said first brake member includes an electromagnetic coil and said second brake member includes an armature that is magnetically affected by said first member upon energization of said coil.
Claim 30
Dependent Claim
26 words
The system of claim 26 in which said electromagnetic coil is operated in a state of over excitation for engaging said first and second brake members.
Claim 31
Dependent Claim
41 words
The system of claim 20 in which said control system responds to the detection of another operating condition that is known to precede the vehicle operating condition by reducing a response time required to engage said first and second brake members.
Claim 32
Dependent Claim
57 words
The system of claim 28 in which at least one of said brake members is responsive to an electric current, and the response time is reduced by applying a predetermined amount of the electric current to said one brake member less than an amount of the electric current require to engage said first and second brake members.
Claim 33
Dependent Claim
21 words
The system of claim 28 in which said another operating condition includes prior engagement of said first and second brake members.
Claim 34
Dependent Claim
108 words
An engine control system comprising: a sensor for detecting a first vehicle operating condition; a processor that outputs a first control signal in response to the detection of the first vehicle operating condition; an engine having a block and an output shaft; said output shaft being rotatable in said engine block about an axis; a first brake member attached to said engine block; a second brake member coupled to said output shaft for rotation therewith about said axis; and an actuator that engages said first and second members in response to said first control signal for resisting rotation of said output shaft with respect to said engine block.
Claim 35
Dependent Claim
108 words
An engine control system comprising: a sensor for detecting a first vehicle operating condition; a processor that outputs a first control signal in response to the detection of the first vehicle operating condition; an engine having a block and an output shaft; said output shaft being rotatable in said engine block about an axis; a first brake member attached to said engine block; a second brake member coupled to said output shaft for rotation therewith about said axis; and an actuator that engages said first and second members in response to said first control signal for resisting rotation of said output shaft with respect to said engine block.
Claim 36
Dependent Claim
29 words
The system of claim 31 in which said output shaft extends through an opening in said first brake member for connection to another drive member powered by said engine.
Claim 37
Dependent Claim
36 words
The system of claim 31 in which said first brake member includes an electromagnetic coil and said second brake member includes an armature that is magnetically affected by said first member upon energization of said coil.
Claim 38
Dependent Claim
21 words
The system of claim 33 in which said first and second brake members are biased into a relative position of disengagement.
Claim 39
Dependent Claim
26 words
The system of claim 33 in which said electromagnetic coil is operated in a state of over excitation for engaging said first and second brake members.
Claim 40
Dependent Claim
31 words
The system of claim 31 in which said processor outputs a second control signal indicative of a second vehicle operating condition that is known to precede the first vehicle operating condition.
Claim 41
Dependent Claim
30 words
The system of claim 36 in which said actuator is responsive to said second control signal for reducing a response time required to engage said first and second brake members.
Claim 42
Dependent Claim
42 words
The system of claim 37 in which one of said brake members includes an electromagnetic coil, and said second control signal applies a current to said coil that is less than the current required to engage said first and second brake members.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-18 | 2001-02-17 | 2001-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-18 | 2005-02-17 | 2005-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-18 | 2009-02-17 | 2009-08-19 | $7700.00 | Window Closed / Lapsed |