Vehicle Control System
First Claim
1. A vehicle control system comprising:
- (a) an accelerator sensor for detecting the degree of depression of an accelerator pedal;
(b) control means for controlling an actuator in accordance with an output of said accelerator sensor, said actuator controlling the amount of fuel injected into an engine;
(c) judgment means for judging whether or not the output of said accelerator sensor exceeds a predetermined upper limit value and therefore abnormal, said upper limit value is a value of the output of said accelerator sensor which corresponds to the maximum degree of depression of said accelerator pedal;
(d) auxiliary backup data supply means for transiently supplying auxiliary backup data, instead of the output of said accelerator sensor, to said control means, immediately after said judgment means judges that the output of said accelerator sensor is abnormal, wherein said auxiliary backup data gradually varies from the value of the output of said accelerator sensor obtained immediately before said output exceeded said upper limit value toward a predetermined main backup data, so that said auxiliary backup data becomes closer to said main backup data; and
(e) main backup data supply means for continuously supplying said main backup data, instead of the output of said accelerator sensor, to said control means after said auxiliary backup data is supplied, wherein said main backup data represents the value that corresponds to a low level of fuel injected in order to bring a vehicle to a safe operating condition.
2 Assignments
0 Petitions
Accused Products
Abstract
A vehicle control system includes a sensor for detecting an operating condition of a vehicle, and a control device. When the output of the sensor is normal, the control device controls an actuator in accordance with the output of the sensor. When the output of the sensor exceeds a limit value and therefore becomes abnormal, the control device controls the actuator using backup data. As the backup data, auxiliary backup data is first used, and thereafter predetermined main backup data is used. The auxiliary backup data gradually varies from a value of the output of said sensor, obtained immediately before the output of the sensor exceeds the limit value, toward the main backup data, so that the auxiliary back data becomes closer to the main backup data.
19 Citations
7 Claims
-
1. A vehicle control system comprising:
-
(a) an accelerator sensor for detecting the degree of depression of an accelerator pedal; (b) control means for controlling an actuator in accordance with an output of said accelerator sensor, said actuator controlling the amount of fuel injected into an engine; (c) judgment means for judging whether or not the output of said accelerator sensor exceeds a predetermined upper limit value and therefore abnormal, said upper limit value is a value of the output of said accelerator sensor which corresponds to the maximum degree of depression of said accelerator pedal; (d) auxiliary backup data supply means for transiently supplying auxiliary backup data, instead of the output of said accelerator sensor, to said control means, immediately after said judgment means judges that the output of said accelerator sensor is abnormal, wherein said auxiliary backup data gradually varies from the value of the output of said accelerator sensor obtained immediately before said output exceeded said upper limit value toward a predetermined main backup data, so that said auxiliary backup data becomes closer to said main backup data; and (e) main backup data supply means for continuously supplying said main backup data, instead of the output of said accelerator sensor, to said control means after said auxiliary backup data is supplied, wherein said main backup data represents the value that corresponds to a low level of fuel injected in order to bring a vehicle to a safe operating condition. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification