US5624005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Running speed control device for a vehicle
Assignee: Denso Corp
•
Filing: 1995-05-23
•
Granted: 1997-04-29
•
Expires: 2015-05-23
Abstract
Abstract When an "off" state of an IDLE switch is detected even once after an ignition switch of an internal combustion engine is turned on, a cruise ECU determines that the IDLE switch is normal, and performs constant-speed cruise control if the start thereof is instructed. Because the constant-speed cruise control is normally instructed while a vehicle is running, if the IDLE switch is normal, the IDLE switch becomes the "off" state at least one time during the time period until the start of the constant-speed cruise control is instructed after the ignition switch is turned on. For this reason, if the IDLE switch does not become the "off" state even once, the cruise ECU determines that the IDLE switch has failed and interrupts the constant-speed cruise control.
Inventors
- 👤 Yoshinari Torii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:06
CPC Classifications
B; B60; B60K; B60K31/00; B60K31/02; B60K31/04; B60K31/042; B60K31/045; B60K31/047; B60W; B60W2710/00; B60W2710/06; B60W2710/0605
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
197 words
A running speed control device for a vehicle comprising: throttle state detecting means for detecting an opening and closing state of a throttle mechanism for an internal combustion engine and generating a first signal when said throttle mechanism is fully closed and a second signal when said throttle mechanism is opened; vehicle speed detecting means for detecting running speed of a vehicle; throttle driving means for driving said throttle mechanism so as to cause vehicle speed to match a target running speed based on a difference between said target running speed and vehicle speed detected by said vehicle speed detecting means and said opening and closing state of said throttle mechanism detected by said throttle state detecting means during running speed control; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only a closed state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until a time when a start of said running speed control is instructed; and prohibiting means for prohibiting an operation of said throttle driving means when said abnormality detecting means detects the abnormality of said throttle state detecting means.
Claim 2
Dependent Claim
197 words
A running speed control device for a vehicle comprising: throttle state detecting means for detecting an opening and closing state of a throttle mechanism for an internal combustion engine and generating a first signal when said throttle mechanism is fully closed and a second signal when said throttle mechanism is opened; vehicle speed detecting means for detecting running speed of a vehicle; throttle driving means for driving said throttle mechanism so as to cause vehicle speed to match a target running speed based on a difference between said target running speed and vehicle speed detected by said vehicle speed detecting means and said opening and closing state of said throttle mechanism detected by said throttle state detecting means during running speed control; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only a closed state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until a time when a start of said running speed control is instructed; and prohibiting means for prohibiting an operation of said throttle driving means when said abnormality detecting means detects the abnormality of said throttle state detecting means.
Claim 3
Dependent Claim
53 words
A running speed control device for a vehicle according to claim 1, wherein said predetermined condition is selected so that said vehicle reaches a running state in which said throttle mechanism is opened at least one time before said instruction for said running speed control is made after said predetermined condition is fulfilled.
Claim 4
Dependent Claim
29 words
A running speed control device for a vehicle according to claim 1, wherein said predetermined condition is that an ignition switch of said internal combustion engine is turned on.
Claim 5
Dependent Claim
27 words
A running speed control device for a vehicle according to claim 1, wherein said predetermined condition is that said vehicle starts to move from its stopping state.
Claim 6
Dependent Claim
26 words
A running speed control device for a vehicle according to claim 1, wherein said predetermined condition is that a depression of a brake pedal is released.
Claim 7
Dependent Claim
43 words
A running speed control device for a vehicle according to claim 1, wherein said predetermined condition is that a main switch is turned on, the main switch activating said throttle driving means so that said throttle driving means can drive said throttle mechanism.
Claim 8
Dependent Claim
29 words
A running speed control device for a vehicle according to claim 1, wherein said predetermined condition is that the running speed of said vehicle is above a predetermined speed.
Claim 9
Dependent Claim
22 words
A running speed control device for a vehicle according to claim 1, wherein said throttle state detecting means is an IDLE switch.
Claim 10
Dependent Claim
49 words
A running speed control device for a vehicle according to claim 1, wherein said throttle state detecting means detects only two states of said throttle mechanism, one state being that said throttle mechanism is fully closed and another state being that said throttle mechanism is at least partially opened.
Claim 11
Dependent Claim
34 words
A running speed control device for a vehicle according to claim 1, wherein said prohibiting means prohibits an operation of said throttle driving means by interrupting an operational processing for said running speed control.
Claim 12
Dependent Claim
197 words
A running speed control device for a vehicle comprising: throttle state detecting means for detecting an opening and closing state of a throttle mechanism for an internal combustion engine and generating a first signal when said throttle mechanism is fully closed and a second signal when said throttle mechanism is opened; vehicle speed detecting means for detecting running speed of a vehicle; throttle driving means for driving said throttle mechanism so as to cause vehicle speed to match a target running speed based on a difference between said target running speed and vehicle speed detected by said vehicle speed detecting means and said opening and closing state of said throttle mechanism detected by said throttle state detecting means during running speed control; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only a closed state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until a time when a start of said running speed control is instructed; and changing means for changing an operation of said throttle driving means when said abnormality detecting means detects the abnormality of said throttle state detecting means.
Claim 13
Dependent Claim
197 words
A running speed control device for a vehicle comprising: throttle state detecting means for detecting an opening and closing state of a throttle mechanism for an internal combustion engine and generating a first signal when said throttle mechanism is fully closed and a second signal when said throttle mechanism is opened; vehicle speed detecting means for detecting running speed of a vehicle; throttle driving means for driving said throttle mechanism so as to cause vehicle speed to match a target running speed based on a difference between said target running speed and vehicle speed detected by said vehicle speed detecting means and said opening and closing state of said throttle mechanism detected by said throttle state detecting means during running speed control; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only a closed state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until a time when a start of said running speed control is instructed; and changing means for changing an operation of said throttle driving means when said abnormality detecting means detects the abnormality of said throttle state detecting means.
Claim 14
Dependent Claim
49 words
A running speed control device for a vehicle according to claim 11, wherein said throttle state detecting means detects only two states of said throttle mechanism, one state being that said throttle mechanism is fully closed and another state being that said throttle mechanism is at least partially opened.
Claim 15
Dependent Claim
66 words
A running speed control device for a vehicle according to claim 11, wherein said changing means changes the operation of said throttle driving means so that said throttle driving means drives said throttle mechanism so as to cause vehicle speed to match said target running speed based on only the difference between said target running speed and vehicle speed detected by said vehicle speed detecting means.
Claim 16
Dependent Claim
52 words
A running speed control device for a vehicle according to claim 11, wherein said predetermined condition selected so that said vehicle reaches a running state in which said throttle mechanism is opened at least one time before said instruction for said running speed control is made after said predetermined condition is fulfilled.
Claim 17
Dependent Claim
29 words
A running speed control device for a vehicle according to claim 11, wherein said predetermined condition is that an ignition switch of said internal combustion engine is turned on.
Claim 18
Dependent Claim
27 words
A running speed control device for a vehicle according to claim 11, wherein said predetermined condition is that said vehicle starts to move from its stopping state.
Claim 19
Dependent Claim
26 words
A running speed control device for a vehicle according to claim 11, wherein said predetermined condition is that a depression of a brake pedal is released.
Claim 20
Dependent Claim
43 words
A running speed control device for a vehicle according to claim 11, wherein said predetermined condition is that a main switch is turned on, the main switch activating said throttle driving means so that said throttle driving means can drive said throttle mechanism.
Claim 21
Dependent Claim
29 words
A running speed control device for a vehicle according to claim 11, wherein said predetermined condition is that the running speed of said vehicle is above a predetermined speed.
Claim 22
Dependent Claim
22 words
A running speed control device for a vehicle according to claim 11, wherein said throttle state detecting means is an IDLE switch.
Claim 23
Dependent Claim
175 words
A running speed control device for a vehicle comprising: throttle state detecting means for detecting an opening and closing state of a throttle mechanism for an internal combustion engine; vehicle speed detecting means for detecting running speed of a vehicle; throttle driving means for driving said throttle mechanism so as to cause vehicle speed to match a target running speed based on a difference between said target running speed and vehicle speed detected by said vehicle speed detecting means and said opening and closing state of said throttle mechanism detected by said throttle state detecting means during running speed control; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only an opening state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until a time when a start of said running speed control is instructed; and prohibiting means for prohibiting an operation of said throttle driving means when said abnormality detecting means detects the abnormality of said throttle state detecting means.
Claim 24
Dependent Claim
175 words
A running speed control device for a vehicle comprising: throttle state detecting means for detecting an opening and closing state of a throttle mechanism for an internal combustion engine; vehicle speed detecting means for detecting running speed of a vehicle; throttle driving means for driving said throttle mechanism so as to cause vehicle speed to match a target running speed based on a difference between said target running speed and vehicle speed detected by said vehicle speed detecting means and said opening and closing state of said throttle mechanism detected by said throttle state detecting means during running speed control; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only an opening state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until a time when a start of said running speed control is instructed; and prohibiting means for prohibiting an operation of said throttle driving means when said abnormality detecting means detects the abnormality of said throttle state detecting means.
Claim 25
Dependent Claim
175 words
A running speed control device for a vehicle comprising: throttle state detecting means for detecting an opening and closing state of a throttle mechanism for an internal combustion engine; vehicle speed detecting means for detecting running speed of a vehicle; throttle driving means for driving said throttle mechanism so as to cause vehicle speed to match a target running speed based on a difference between said target running speed and vehicle speed detected by said vehicle speed detecting means and said opening and closing state of said throttle mechanism detected by said throttle state detecting means during running speed control; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only an opening state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until a time when a start of said running speed control is instructed; and changing means for changing an operation of said throttle driving means when said abnormality detecting means detects the abnormality of said throttle state detecting means.
Claim 26
Dependent Claim
175 words
A running speed control device for a vehicle comprising: throttle state detecting means for detecting an opening and closing state of a throttle mechanism for an internal combustion engine; vehicle speed detecting means for detecting running speed of a vehicle; throttle driving means for driving said throttle mechanism so as to cause vehicle speed to match a target running speed based on a difference between said target running speed and vehicle speed detected by said vehicle speed detecting means and said opening and closing state of said throttle mechanism detected by said throttle state detecting means during running speed control; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only an opening state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until a time when a start of said running speed control is instructed; and changing means for changing an operation of said throttle driving means when said abnormality detecting means detects the abnormality of said throttle state detecting means.
Claim 27
Dependent Claim
103 words
An opening and closing state abnormality detecting device for a throttle mechanism installed in an internal combustion engine of a vehicle comprising: throttle state detecting means for detecting an opening and closing state of said throttle mechanism and generating a first signal when said throttle mechanism is fully closed and a second signal when said throttle mechanism is opened; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only a closed state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until said vehicle reaches a predetermined running state.
Claim 28
Dependent Claim
103 words
An opening and closing state abnormality detecting device for a throttle mechanism installed in an internal combustion engine of a vehicle comprising: throttle state detecting means for detecting an opening and closing state of said throttle mechanism and generating a first signal when said throttle mechanism is fully closed and a second signal when said throttle mechanism is opened; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only a closed state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until said vehicle reaches a predetermined running state.
Claim 29
Dependent Claim
33 words
An opening and closing state abnormality detecting device for a throttle mechanism according to claim 23, wherein said predetermined condition is that the running speed of said vehicle is above a predetermined speed.
Claim 30
Dependent Claim
30 words
An opening and closing state abnormality detecting device for a throttle mechanism according to claim 23, wherein said predetermined condition is that a depression of a brake pedal is released.
Claim 31
Dependent Claim
26 words
An opening and closing state abnormality detecting device for a throttle mechanism according to claim 23, wherein said throttle state detecting means is an IDLE switch.
Claim 32
Dependent Claim
53 words
An opening and closing state abnormality detecting device for a throttle mechanism according to claim 23, wherein said throttle state detecting means detects only two states of said throttle mechanism, one state being that said throttle mechanism is fully closed and another state being that said throttle mechanism is at least partially opened.
Claim 33
Dependent Claim
37 words
An opening and closing state abnormality detecting device for a throttle mechanism according to claim 23, wherein said throttle state detecting means detects that said throttle mechanism changes from a fully closed state to an opening state.
Claim 34
Dependent Claim
50 words
An opening and closing state abnormality detecting device for a throttle mechanism according to claim 23, wherein said predetermined condition is selected so that said throttle mechanism is opened at least one time from a time when said predetermined condition is fulfilled until said vehicle reaches said predetermined running state.
Claim 35
Dependent Claim
33 words
An opening and closing state abnormality detecting device for a throttle mechanism according to claim 23, wherein said predetermined condition is that an ignition switch of said internal combustion engine is turned on.
Claim 36
Dependent Claim
31 words
An opening and closing state abnormality detecting device for a throttle mechanism according to claim 23, wherein said predetermined condition is that said vehicle starts to move from its stopping state.
Claim 37
Dependent Claim
81 words
An opening and closing state abnormality detecting device for a throttle mechanism installed in an internal combustion engine of a vehicle comprising: throttle state detecting means for detecting an opening and closing state of said throttle mechanism; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only a opening state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until said vehicle reaches a predetermined running state.
Claim 38
Dependent Claim
81 words
An opening and closing state abnormality detecting device for a throttle mechanism installed in an internal combustion engine of a vehicle comprising: throttle state detecting means for detecting an opening and closing state of said throttle mechanism; abnormality detecting means for detecting an abnormality of said throttle state detecting means by detecting that only a opening state of said throttle mechanism has been detected from a time when a predetermined condition is fulfilled until said vehicle reaches a predetermined running state.
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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) | 2000-04-28 | 2000-10-28 | 2001-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-28 | 2004-10-28 | 2005-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-28 | 2008-10-28 | 2009-04-29 | $7700.00 | Window Closed / Lapsed |