摘要:
A control apparatus for a shift-position changing mechanism that changes the shift positions of an automatic transmission mounted in a vehicle using a rotational force of an actuator based on a signal corresponding to the state of an operation member, including: a mechanism that generates a rotational force for moving the actuator toward a rotation stop positional-range corresponding to the shift position, based on a rotation stop position of the actuator; a detection unit that detects a rotation amount of the actuator; a control unit that controls the actuator based on the signal and the detected rotation amount; and a learning unit that learns the rotation stop positional-range corresponding to the shift position, based on an amount by which the actuator has been rotated since a control over the actuator executed by the control unit is stopped.
摘要:
A driving force control system includes an internal combustion engine model (1000) represented by a model linearized while including a first-order lag component, a calculator (2000) calculating deviation between target engine torque and estimated engine torque, a delay compensator (3000) compensating for response delay based on the deviation, and an adder (4000) calculating an engine controlled variable by adding delay-compensated deviation to the target engine torque.
摘要:
An ECU executes a program that includes the steps of: sensing an accelerator position (S100); calculating a target engine torque of a manipulating system “a” from the accelerator position (S200); holding the target engine torque of the manipulating system “a” (S300); calculating a target driving force of the manipulating system “A” from the target engine torque of the manipulating system “a” (S400); arbitrating in driving force between the target driving force of the manipulating system “A” and the target driving force of the supporting system “B” (S500); and, if the target driving force of the manipulating system “A” is selected as a result of the arbitration (NO in S600), outputting the held target engine torque of the manipulating system “a” as the target engine torque to the engine ECU (S900).
摘要:
A control device of a vehicle which switches a lockup clutch to an operating state depending upon vehicle conditions determines switching of the lockup clutch from lockup-ON switching lines established when the lockup clutch is in an engaged state, or from lockup-OFF switching lines established when the lockup clutch is in a released state. When switching of the lockup clutch is determined based on one of the lockup-ON switching lines and the lockup-OFF switching lines, a determination based on the other switching lines is selected as an effective determination about switching once the same switching of the operating state as that determined based on the above-indicated one of the switching lines is determined based on the other switching lines.
摘要:
A vehicle cruise control apparatus is provided. The vehicle has an engine 2 mounted thereon, a function of implementing constant-speed-cruise control and transmission control. The apparatus includes demand value computation section 14, engine control section 16, expected value computation section 12, compensation section 18 and AI-shift control section 20. The section 14 computes a demand value required for realizing a target speed. The section 16 adjusts an output of the engine 2 based on the demand value. The section 12 computes an expectation value based on the vehicle driving state and the driver's driving operation state. Based on a vehicle operating state including a comparison result of the demand value and the expectation value, the section 18 selects one of the demand value and the expectation value, and changes gears based on the selected value. As a result, driver's driving operation is prevented from becoming complicated during constant-speed-cruise control.
摘要:
A control apparatus for a vehicular drive system, including uphill-drive-force control means and constructed to reduce a degree of uneasiness to be given to the vehicle operator during an uphill-road running of a vehicle. The uphill-drive-force control means is arranged to increase a vehicle drive force during the uphill-road running of the vehicle at a given required vehicle output as compared with a vehicle drive force during a level-road running of the vehicle at substantially the same required vehicle output, for obtaining substantially the same value of acceleration of the vehicle during the uphill-road running as that during the level-road running. Delay control means (131) is provided for delaying initiation of an uphill-drive-force control by the uphill-drive-force control means (130), until first period determining means (130) has determined that a time period Tα1 during which acceleration difference G′ between reference acceleration Gb and actual acceleration Gs of the vehicle is larger than predetermined uphill-roadway determining threshold α had exceeded a predetermined first time period T1, so that the vehicle drive force F is not increased for the predetermined first period T1 after the moment of initiation of the uphill-road running which requires the uphill-drive-force control by the uphill-drive-force control means 130, whereby immediately after initiation of the uphill-road running, the vehicle operator can feel a decrease of the vehicle acceleration G as expected upon initiation of the uphill-road running, so that the vehicle operator is less likely to feel uneasy during the uphill-road running.
摘要:
An ECU executes a program that includes the steps of setting a vehicle speed to the minimum wheel speed among wheel speeds of four wheels of a vehicle; calculating a difference between the wheel speeds of right and left driven wheels; turning an abnormality flag on when a higher wheel speed is higher than a value obtained by multiplaying a lower wheel speed by α; and determining that the vehicle is turning, and turning a turning flag on, when the abnormality flag is off, a predetermined time has not elapsed after the turning flag is turned on, and the difference between the wheel speeds is equal to or larger than a map value obtained using a map where a vehicle speed is used as a parameter.
摘要:
A control apparatus and method for a vehicle including a stepped automatic transmission and a shift control device which controls an operation of the automatic transmission based on a vehicle state such as a value corresponding to a driving force required for the vehicle, according to a pre-stored shift pattern having a shift line for determining whether shifting is performed from one shift speed to an adjacent shift speed. In the control apparatus and control method, one shift pattern is automatically selected, based on the vehicle state, from among multiple shift patterns including at least a first shift pattern in which the shift line is set such that the driving force for the vehicle, that is decided by a gear ratio of the shift speed and engine output characteristics, continuously and smoothly changes when shifting is performed from one shift speed to an adjacent shift speed, and a second shift pattern in which the shift line is set such that the use of a region, where an engine rotational speed for obtaining the driving force for the vehicle becomes a predetermined high rotational speed, is avoided.
摘要:
An ECT-ECU includes a circuit that calculates an oil temperature threshold on the basis of a signal input from one of an engine coolant temperature sensor, an engine intake air temperature sensor, and an AT hydraulic fluid temperature sensor if a signal for starting an engine of a vehicle is input thereto from an ignition switch, a circuit that detects an oil temperature on the basis of a signal input from the AT hydraulic fluid temperature sensor at intervals of a predetermined sampling time while the vehicle is running, and a circuit that controls an automatic transmission to prohibit a gear shift from fourth speed to fifth speed if a detected oil temperature is lower than the oil temperature threshold.
摘要:
In a method of controlling a diesel engine that performs an injected fuel quantity reduction process for preventing black smoke based on an engine speed, and performs an injected fuel quantity reduction process for preventing shift shock during shifting of an automatic transmission, the injected fuel quantity reduction process for preventing black smoke is inhibited or the amount of reduction of the injected fuel quantity for preventing black smoke is reduced during shifting of the automatic transmission or during execution of the injected fuel quantity reduction process for preventing shift shock.