Monitoring the operation of a vehicle
First Claim
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1. A method of monitoring the operation of a motor vehicle, which method comprises the steps of:
- sensing the vehicle'"'"'s throttle opening;
sensing a parameter which corresponds to the magnitude of a variable load force acting on the vehicle in a direction opposite the direction of forward travel of the vehicle; and
giving an indication when the throttle opening exceeds a predetermined throttle opening value, the predetermined throttle opening value being a stepwise increasing function of said parameter, said function increasing in two or more steps as said parameter increases.
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Abstract
A method of and apparatus for monitoring the operation of a motor vehicle subjected to a decelerative force, wherein the vehicle'"'"'s throttle opening is sensed, an indication is given when the throttle opening exceeds a predetermined value, wherein the decelerative force is sensed, and wherein said predetermined value is varied automatically as said decelerative force on the vehicle varies. If the throttle opening continues to exceed said predetermined value, then a recording is made.
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Citations
20 Claims
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1. A method of monitoring the operation of a motor vehicle, which method comprises the steps of:
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sensing the vehicle'"'"'s throttle opening; sensing a parameter which corresponds to the magnitude of a variable load force acting on the vehicle in a direction opposite the direction of forward travel of the vehicle; and giving an indication when the throttle opening exceeds a predetermined throttle opening value, the predetermined throttle opening value being a stepwise increasing function of said parameter, said function increasing in two or more steps as said parameter increases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus for monitoring the operation of a motor vehicle subjected to a load force acting on the vehicle in a direction opposite the direction of forward travel of the vehicle, which apparatus comprises:
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first sensing means for sensing the vehicle'"'"'s throttle opening, said first sensing means including first throttle sensitive means for sensing whether the throttle opening is above or below a first predetermined degree, and second throttle sensitive means for sensing whether the throttle opening is above or below a second, greater predetermined degree; second sensing means for sensing a parameter which corresponds to the magnitude of said load force, said second sensing means including first parameter sensitive means for sensing whether said parameter is above or below a first predetermined value and second parameter sensitive means for sensing whether said parameter is above or below a second higher predetermined value; and indicating means operative in response to said first sensing means and said second sensing means to give an indication either when the parameter is above said first predetermined value and the throttle opening is above said first predetermined degree, or when the parameter is above said second predetermined value and the throttle opening is above said second predetermined degree. - View Dependent Claims (12, 14, 15, 17, 18, 19)
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13. Apparatus for monitoring the operation of a motor vehicle subjected to a load force acting on the vehicle in a direction opposite the direction of forward travel of the vehicle, which apparatus comprises:
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first sensing means for sensing the vehicle'"'"'s throttle opening; second sensing means for sensing a parameter which corresponds to the magnitude of said load force; and indicating means operative in response to the first sensing means and the second sensing means to give an indication when the throttle opening exceeds a predetermined throttle opening value, which predetermined throttle opening value is, over at least part of the range of said parameter, a continuously increasing function of said parameter.
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16. Apparatus as claimed in clim 14, wherein said inertial device comprises a container;
- a body of liquid contained in the container;
a radiation emitter; and
a radiation receptor for receiving radiation from the emitter;
the body of liquid being displaceable in the container under inertial force and the emitter and receptor being arranged to detect the position of the body of liquid in the container thereby giving an indication of the existence of said accelerative, decelerative or centrifugal force.
- a body of liquid contained in the container;
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20. A method of monitoring the operation of a motor vehicle, which method comprises the steps of:
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sensing the vehicle'"'"'s throttle opening; sensing a parameter which corresponds to the magnitude of a variable load force acting on the vehicle in a direction opposite the direction of forward travel of the vehicle; and giving an indication when the throttle opening exceeds a predetermined throttle opening value, the predetermined throttle opening value being, over at least part of the range of said parameter, a continuously increasing function of said parameter.
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Specification