Patent US5987372A successfully refreshed from Google Patents.
US5987372A
Expired / Lapsed
US
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Safety system for a motor vehicle
Assignee: Mercedes-Benz AG
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Filing: 1997-06-19
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Granted: 1999-11-16
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Expires: 2017-06-19
Abstract
Abstract The invention relates to a safety system for a motor vehicle having an internal-combustion engine. Independent quantities are used for the engine control and for the monitoring of the engine control. The control of the internal-combustion engine takes place by way of an operating parameter indicative of the operating condition of the internal-combustion engine--such as the engine load. In contrast, the monitoring of the engine control takes place by means of a quantity indicative of vehicle propulsion, such as the vehicle output torque, which is determined on the basis of a rotational wheel speed. The desired values for the engine control and for the monitoring are determined from the accelerator pedal position. The detection of the corresponding actual values is based on independent input quantities.
Inventors
- 👤 Hans-Christoph Wolf
- 👤 Juergen Schenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:37
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/22; B; B60; B60K; B60K28/00; B60K28/10; B60K28/16; B60W; B60W2710/00; B60W2710/06; B60W2710/0666
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
Safety system for a motor vehicle having an internal-combustion engine, comprising: a sensor for measuring an accelerator pedal position, means for determining an actual value for at least one operating parameter which is indicative of an operating condition of the internal-combustion engine; means for determining at least one quantity indicative of vehicle propulsion; means for determining a desired value for vehicle propulsion and a desired value for the operating parameter indicative of the operating condition of the internal-combustion engine, based on the accelerator pedal position; means for adjusting the actual value of the operating parameter indicative of the operating condition of the internal-combustion engine to correspond to the determined desired value thereof; and means for the continuously comparing the actual and desired values for vehicle propulsion, and for recognizing a fault if there is a deviation of the actual value from the desired value.
Claim 2
Dependent Claim
144 words
Safety system for a motor vehicle having an internal-combustion engine, comprising: a sensor for measuring an accelerator pedal position, means for determining an actual value for at least one operating parameter which is indicative of an operating condition of the internal-combustion engine; means for determining at least one quantity indicative of vehicle propulsion; means for determining a desired value for vehicle propulsion and a desired value for the operating parameter indicative of the operating condition of the internal-combustion engine, based on the accelerator pedal position; means for adjusting the actual value of the operating parameter indicative of the operating condition of the internal-combustion engine to correspond to the determined desired value thereof; and means for the continuously comparing the actual and desired values for vehicle propulsion, and for recognizing a fault if there is a deviation of the actual value from the desired value.
Claim 3
Dependent Claim
32 words
Safety system according to claim 1, wherein a deviation is recognized when a difference between the actual and desired vehicle propulsion values exceeds a preset threshold value for a preset time period.
Claim 4
Dependent Claim
35 words
Safety system according to claim 1, wherein, when a fault is recognized, adjustment of the operating parameter indicative of the operating condition of the internal-combustion engine is performed on the basis of the differential value.
Claim 5
Dependent Claim
33 words
Safety system according to claim 1, wherein, when a fault is recognized, a signal for reducing the actual vehicle propulsion value is transmitted to an ignition adjustment unit for initiating an ignition intervention.
Claim 6
Dependent Claim
37 words
Safety system according to claim 4, wherein, when, despite an ignition intervention, the actual vehicle propulsion value exceeds the desired vehicle propulsion value, a signal for switching off the fuel is transmitted to a fuel distributing device.
Claim 7
Dependent Claim
23 words
Safety system according to claim 1, wherein, when a fault is recognized, a fault signal is generated and is indicated to the driver.
Claim 8
Dependent Claim
29 words
Safety system according to claim 6, wherein, when a fault is recognized, a fault signal is generated and is indicated to the driver and is stored in a memory.
Claim 9
Dependent Claim
32 words
Safety system according to claim 7, further comprising a traction control system, and wherein the rotational wheel speed is detected by the traction control system and is transmitted to the analyzing device.
Claim 10
Dependent Claim
113 words
Safety system according to claim 1, wherein in addition to the accelerator pedal position, an engine load value and a rotational speed are detected on at least one vehicle wheel; a desired load value and a desired output torque are determined based on the accelerator pedal position, and an actual output torque is determined based on the at least one rotational wheel speed; the actual load value adjusted to correspond to the desired load value by influencing an operating parameter which influences the engine load; and the actual output torque and desired output torque are continuously compared, and a fault is recognized if the actual output torque deviates from the desired output torque.
Claim 11
Independent Claim
143 words
A method for controlling operation in a motor vehicle having an internal combustion engine, said method comprising the steps of: measuring an accelerator pedal position; determining an actual value for at least one operating parameter which is indicative of an operating condition of the internal combustion engine; determining an actual value for at least one quantity indicative of vehicle propulsion; determining a desired value for vehicle propulsion and a desired value for the operating parameter indicative of the operating condition of the internal combustion engine, based on the accelerator pedal position; adjusting the actual value of the operating parameter indicative of the operating condition of the internal combustion engine to correspond to the determined desired value; continuously comparing the actual and desired values for vehicle propulsion; and recognizing a fault if there is a deviation of the actual value from the desired value.
Claim 12
Independent Claim
143 words
A method for controlling operation in a motor vehicle having an internal combustion engine, said method comprising the steps of: measuring an accelerator pedal position; determining an actual value for at least one operating parameter which is indicative of an operating condition of the internal combustion engine; determining an actual value for at least one quantity indicative of vehicle propulsion; determining a desired value for vehicle propulsion and a desired value for the operating parameter indicative of the operating condition of the internal combustion engine, based on the accelerator pedal position; adjusting the actual value of the operating parameter indicative of the operating condition of the internal combustion engine to correspond to the determined desired value; continuously comparing the actual and desired values for vehicle propulsion; and recognizing a fault if there is a deviation of the actual value from the desired value.
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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) | 2002-11-15 | 2003-05-17 | 2003-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-15 | 2007-05-17 | 2007-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-15 | 2011-05-17 | 2011-11-16 | $7700.00 | Window Closed / Lapsed |