TH13477B - Control equipment for powertrain in vehicles operating by hydraulic system - Google Patents

Abstract

DC60 (21/10/40) when it is switched to a forward run. While the vehicle is running in the direction Reverse shuffle To a forward running state Will be made at a very short time by that part to prevent its degradation. Of the durability of the hydraulic overlap element due to the slipping, for that purpose When the vehicle speed (v) exceeds the predetermined value (YVa) during reverse (R) and also when the vehicle speed (v) never falls lower. Preset value (YVa) In neutral (N), the reverse signal (FREV = 1) will be output if FREV = 1 at the time of the shift. As a forward The relationship between the speed of the spacecraft And the velocity step (velocity change diagram) is set to one (Chart of changing the velocity as measured by running backwards) which is different from the normal time By that part to determine The velocity steps are created in the next steps. Will be built even at high speed vehicles. Therefore, the shuffle Will be done in no time To a forward running state With a large torque that is passed through the low speed stage. By using a receiver Which can detect the true direction of the vehicle that it is in the forward direction Or reverse direction Chart of changing speed measured From running backwards Will be selected as the velocity change diagram When the direction of the vehicle's running Vehicles that will be detected During the forward in the reverse direction When it is switched to a forward run While the vehicle is running in the direction Reverse shuffle To a forward running state Will be made at a very short time with that part preventing degradation Of the durability of hydraulic overlap elements due to the far slippery for that purpose When the vehicle speed (v) exceeds the predetermined value (YVa) during reverse (R) and also when the vehicle speed (v) never falls lower. Preset value (YVa) In neutral (N), the reverse signal (FREV = 1) will be output if FREV = 1 at the time of the shift. As a forward The relationship between the speed of the spacecraft And the velocity step (velocity change diagram) is set to one (Chart of changing the velocity as measured by running backwards) which is different from the normal time In which to decide The velocity steps are created in the next steps. Will be built even at high speed vehicles. Therefore, the shuffle Will be made in a short time To a forward running state With a large torque that is passed through the low speed stage. By using a receiver Which can detect the true direction of the vehicle that it is in the forward direction Or reverse direction Chart of changing speed measured From running backwards Will be selected as the velocity change diagram When the direction of the vehicle's running Vehicles that will be captured During the forward in the reverse direction

Claims (2)

1.Control equipment for a vehicle transmission system operated by a hydraulic system. Which has a certain speed That will be created by an operation selecting all overlapping elements. Hydraulics in which the transmission is attached to the vehicle engine via a conversion unit Liquid torque That were made to have special characteristics that the device contains Mechanism for detecting the degree of change in the rotational speed of the engine. When it starts to change The initial velocity of this change depends on the increase of the velocity. In engine rotation Due to slipping in the conversion unit Liquid torque A mechanism for adding additional pressure that is applied to compress the fluid during its transition. Combine overlap with the force of compression liquid. To be released upon transition from the reference value by The correction value of this additional pressure Which depends on the degree of velocity change Where the mechanism for detecting the degree of speed change includes a mechanism for detecting the engine rotational speed. When it starts to change Mechanism for detecting rotation speed Of the input shaft of the transmission part when there is Turning down Where the tabular velocity ratio of the unit is converted Fluid torque upon completion of the shift down It is specified as the reference rotation speed ratio. Rotation speed of Engine derived by reference rotational speed ratio And the speed of rotation of the transmission place The input power of the transmission when it starts to shift down. It is specified as the engine's reference rotational speed and the derived engine rotational speed by the engine's reference rotational speed, the speed ratio before it starts to shift, and the speed ratio after the transition is finished. Specified as the target rotational speed of the engine and mechanism for calculating the degree of change in speed in terms of the ratio of the difference between the engine rotations. When it starts to change And the speed of rotation Engine reference To the difference between the target rotational speed of the said engine and the reference rotational speed of the engine 2. The control device as specified in claim 1, where the supplementary pressure correction value is Used by the aforementioned addition mechanism that is calculated by multiplying the reference correction value by that ratio.