Motor vehicles – With means for promoting safety of vehicle – its occupant or...
Patent
1996-01-11
1998-08-25
Culbreth, Eric D.
Motor vehicles
With means for promoting safety of vehicle, its occupant or...
745015R, 74512, 74560, 180315, 403DIG1, B60D 112
Patent
active
057974675
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention pertains to a device for preventing an accelerator of a vehicle such as a gasoline engine automobile or an electric vehicle having an automatic transmission from being erroneously operated. This is done by stopping an accelerating operation when the accelerator pedal is erroneously pushed down in order to prevent the vehicle from being accelerated even though the accelerator pedal is pushed down in spite of the vehicle being intended to be braked.
BACKGROUND OF THE INVENTION
On operating a vehicle such as a gasoline engine vehicle having an automatic transmission mounted thereon, when an accelerator pedal is erroneously pushed down even though a brake pedal is intended to be pushed down for braking the vehicle, it is not stopped, but is accelerated, which should be avoided.
Various devices have been proposed in order to avoid the vehicle from being unwillingly accelerated by an erroneous operation of the pedal. The prior art devices are adapted to basically prevent the vehicle from being accelerated by a fuel system, an air intake system or an ignition system of an engine failing to be operated, which is instructed by an electric signal which is in turn generated by electrically detecting that the accelerator pedal in place of a brake pedal is erroneously pushed down.
For example, Japanese Laying-Open No. 190,135/1986 (Japan 61-190,135), Japanese Laying-Open No. 115,734/1989 (Japan 1-115,734) or Japanese Laying-Open No. 139,183/1993 (Japan 5-139,183) discloses a device adapted to fail to operate one of the aforementioned systems of the engine, which is instructed by an electric signal generated by determining and electrically detecting an erroneous operation of the accelerator pedal in place of the brake pedal when a pedalling force of the accelerator or a pedalling velocity thereof considerably exceeds a normal value.
However, since such prior art devices electrically detect the erroneous operation of the pedal and thereafter prevent an engine from being accelerated in accordance with the electric signal, they disadvantageously have a time delay after the accelerator pedal is pushed down until the engine is prevented from being accelerated. Since the prior art devices require erroneous operation detecting means to determine the erroneous operation of the pedal to generate the electric signal and engine operation disabling means to make the fuel system, the air intake system or the ignition system of the engine disabled in accordance with the electric signal from the erroneous operation detecting means, the construction of the devices is complicated. Furthermore, if the air intake system or the ignition system is disabled while the accelerator pedal continues to be pushed down, then raw gas is undesirably exhausted from the engine. In addition thereto, since the engine is stopped, the engine continues to be stopped even though the accelerator pedal is released and therefore, the vehicle cannot be driven unless the engine is again started.
Japanese Laying-Open No. 185862/1993 (Japan 5-185862) discloses a device for preventing an engine from being accelerated. Normal operation of the accelerator is provided by interengaging an accelerator rod on which an accelerator pedal is mounted with a cable operating plate connected to a throttle cable so that the accelerator rod is interlocked with the throttle cable, and the engine is prevented from being accelerated by disengaging the accelerator rod from the cable operating plate so that the throttle cable is released from the accelerator rod.
Although the prior art device of Japanese Laying-Open No. 185862/1993 releases the throttle cable from the accelerator pedal in accordance with the erroneous operation of the accelerator pedal in place of the brake pedal, the engine tends to be prevented in a delay time from being accelerated because the accelerator erroneous operation preventing device is never operated unless the accelerator pedal is pushed down while the distance for which the accelerator pedal is pushed down exceeds a pre
REFERENCES:
patent: 5193640 (1993-03-01), Lee
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