Patent application number | Description | Published |
20130184971 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - A control device for an internal combustion engine that enhances precision of realization of required torque while enhancing emission performance by positively changing an air-fuel ratio. The control device generates a target air-fuel ratio by lessening a change speed of a required air-fuel ratio of an internal combustion engine. However, when the required air-fuel ratio is made rich with return from fuel cut, lessening of the change speed of the required air-fuel ratio is stopped, and the required air-fuel ratio is directly outputted as a target air-fuel ratio. The control device calculates a target air quantity for realizing the required torque under the target air-fuel ratio. The control device manipulates an actuator for air quantity control in accordance with the target air quantity, and manipulates an actuator for fuel injection quantity control in accordance with the target air-fuel ratio. | 07-18-2013 |
20130191010 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - An internal combustion engine control device the present invention provides is a control device that can realize both of request torque and a request A/F for each of cylinder groups with high precision, even when the request A/F differs at each of the cylinder groups. The present control device sets a reference A/F within a range from the leanest A/F to the richest A/F out of the request A/Fs to the respective cylinder groups. The present control device calculates a target air quantity for realizing the request torque under the reference A/F, based on data that defines a relation between engine output torque and an air quantity in relation to an A/F. The present control device controls a throttle opening in accordance with the target air quantity, and controls fuel injection amounts of the respective cylinders in accordance with the request A/F s to the respective cylinder groups. | 07-25-2013 |
20130275028 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - A control device for an internal combustion engine provided by the present invention is a control device which can satisfy a requirement concerning exhaust gas performance of the internal combustion engine, a requirement concerning fuel economy performance, and a requirement concerning operation performance with an excellent balance by properly regulating a change speed of a required air-fuel ratio and an ignition timing. The present control device keeps the ignition timing at an optimal ignition timing if a predetermined permission condition is not satisfied. However, when the permission condition is satisfied, the present control device controls the ignition timing so as to compensate for a difference which occurs between torque which is estimated from an operation of an actuator for air quantity control and required torque by the ignition timing. Further, if a predetermined lessening condition is not satisfied, the present control device determines an original required air-fuel ratio directly as a final required air-fuel ratio. However, if the lessening condition is satisfied, the present control device processes a signal of the original required air-fuel ratio to lessen a change speed thereof, and determines a required air-fuel ratio the change speed of which is lessened as a final required air-fuel ratio. The permission condition includes the required air-fuel ratio changing in a rich direction, and a change amount thereof being larger than a predetermined determination reference value, and the lessening condition includes the change amount of the required air-fuel ratio being larger than a determination reference value, and the permission condition being unsatisfied. | 10-17-2013 |
20130297186 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - A control device is provided that generates a target air-fuel ratio by lessening a change speed of a required air-fuel ratio of an internal combustion engine. However, when a deterioration degree of a catalyst which is disposed in an exhaust passage of the internal combustion engine is a predetermined reference or more, lessening of the change speed of the required air-fuel ratio is stopped, or a lessening degree of the change speed of the required air-fuel ratio is decreased. The control device calculates a target air quantity for realizing the required torque under the target air-fuel ratio. For calculation of the target air quantity, data in which relationship of torque generated by the internal combustion engine and an air quantity taken into a cylinder is fixed by being related to an air-fuel ratio can be used. | 11-07-2013 |
20140041628 | INTERNAL COMBUSTION ENGINE CONTROL APPARATUS - When a change amount of any one of a demanded torque, a demanded efficiency, and a demanded air-fuel ratio exceeds a predetermined threshold value, an internal combustion engine control apparatus provided by this invention makes a temporary adjustment to a value of any one of a demanded torque, a demanded efficiency and instructed efficiency, and a demanded air-fuel ratio in accordance with a type of demanded engine performance that is currently being given priority among various performances demanded of the internal combustion engine. In the present control apparatus, an actuator for air amount control is operated in accordance with a target air amount calculated based on a demanded torque and a demanded efficiency, an actuator for ignition timing control is operated in accordance with an instructed efficiency, and an actuator for fuel injection amount control is operated in accordance with a demanded air-fuel ratio. | 02-13-2014 |
Patent application number | Description | Published |
20080278349 | Vehicle Deviation Preventing Control Device - A vehicle speed V is compared with a threshold Vth; when V is less than Vth, TLC is set to an initial value t | 11-13-2008 |
20090009305 | Vehicle Derailing Prevention Device - A vehicle speed V is read (step S | 01-08-2009 |
20090048738 | Driving Assistance System and Driving Assistance Method - In a driving assistance system having an actuator ( | 02-19-2009 |
20090194350 | STEERING ASSIST SYSTEM AND STEERING ASSIST METHOD - A steering assist system for applying a steering torque reduces the influence of a time-dependent steering control amount on an assist steering torque when a predetermined driving operation by a driver is detected. Thus, the influence of the time-dependent steering control amount on the applied steering torque, which increases when the period of time over which actual moving state deviates from the target moving state increases is reduced when the driver makes the predetermined driving operation. Thus, it is possible to avoid the problem where steering feel degrades because the steering torque increases over time. | 08-06-2009 |
20090265062 | STEERING SUPPORT DEVICE - An object of the present invention is to provide a steering assist device which can perform steering assist control having excellent capability to follow up a traveling path by increasing the steering amount in the steering control at a curve entrance. A steering assist device of the present invention is a steering assist device | 10-22-2009 |
20100004822 | STEERING SUPPORT DEVICE - The present invention aims at providing a steering assistance apparatus which can accurately detect a curve exit of a running path and perform steering assistance control with an excellent running path following capability. The steering assistance apparatus of the present invention is a steering assistance apparatus | 01-07-2010 |