KR960038188A

KR960038188A - Line pressure control of automatic transmission

Info

Publication number: KR960038188A
Application number: KR1019950008894A
Authority: KR
Inventors: 세끼구찌 히데끼
Original assignee: 야스모로 도시오; 유니시아 젝스 코포레이션
Priority date: 1995-04-15
Filing date: 1995-04-15
Publication date: 1996-11-21
Also published as: KR100239894B1

Abstract

변속중에 토크 상태 기간 및 관성 상태 기간 각각으로 적정한 라인압 설정을 진행한다. 토크 TQe 및 관성 토크 TQi를 각기에 산출하는 (S3, S4), 그리고 변속중의 토크 상태에 있어서는 엔진출력 토크 TQe를 기어 열 입력 토크 TQ로 간주한다(S8). 한편, 업 시프트에 있어서 관성 상태에 있어서는 엔진출력 토크 TQe와 관성토크 TQi의 가산치를 기어 열 입력 토크 TQ로 한다(S9). 또, 다운 시프트에서 관성상태에 있어서는 엔진출력 토크 TQe에서 관성토크 TQi를 감산한 값을 기어 열 입력 토크 TQ로 한다(S11). 그리고 상기 기어 열 입력 토크 TQ를 라인압 PL로 전환하여 라인압 제어를 진행한다(S12).During shifting, an appropriate line pressure setting is performed for each of the torque state period and the inertia state period. The engine output torque TQe is regarded as the gear train input torque TQ in the torque state in which the torque TQe and the inertia torque TQi are respectively calculated (S3, S4), and during the shifting operation (S8). On the other hand, in the inertia state in the upshift, the added value of the engine output torque TQe and the inertia torque TQi is set as the gear heat input torque TQ (S9). In the inertia state in the downshift, the gear heat input torque TQ is obtained by subtracting the inertia torque TQi from the engine output torque TQe (S11). Then, the gear train input torque TQ is switched to the line pressure PL to perform line pressure control (S12).

Description

Line pressure control of automatic transmission

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

성도, 제3도는 실시예에서의 라인압 제어를 보인 흐름도, 제4도는 업 시프트시의 관성 토크를 보인 시간선도, 제5도는 다운 시프트시의 관성 토크를 보인 시간선도.Fig. 3 is a flowchart showing line pressure control in the embodiment, Fig. 4 is a time line diagram showing inertia torque during upshift, and Fig. 5 is a time line diagram showing inertia torque during downshift.

Claims

A line pressure control device of an automatic transmission for controlling a line pressure supplied to a hydraulic circuit for controlling each shift element of an automatic transmission constituting a power transmission system of an engine, comprising: an engine output torque detecting means for outputting an output torque of the engine; Inertial torque detecting means for detecting inertial torque during shifting, inertial state detecting means for detecting inertial state during shifting, torque state detecting means for detecting torque state during shifting, and the engine output torque in the torque state The gear train input torque is verified on the basis of the engine output torque detected by the detection means, and in the inertia state, the gear is based on the engine output torque detected by the engine output torque detection means and the inertia torque detected by the inertial torque detection means. The gear determined by the gear heat input torque determining means for determining the heat input torque and the gear heat input torque determining means. A line pressure calculating means for calculating a line pressure based on a thermal input torque, and a line pressure control means for adjusting a line pressure supplied to the hydraulic circuit based on the line pressure calculated by the line pressure calculating means. Line pressure control device of an automatic transmission, characterized in that.

The engine output torque and the inertial torque detecting means according to claim 1, wherein the gear train input torque determining means detects the gear train input torque in the inertia state by the engine output torque detecting means when the gear train input torque determining means upshifts. A line pressure control device for an automatic transmission, characterized in that the determination is made based on the added value of the detected inertia torque.

3. The inertia of the engine output torque according to claim 1 or 2, wherein the gear train input torque in the inertia state is detected by the engine output torque detection means when the gear train input torque determining means is downshifted with acceleration. A line pressure control device for an automatic transmission, characterized in that the determination is based on a value obtained by subtracting the inertia torque detected by the torque detecting means.