Control apparatus and control method for vehicle

Abstract

A vehicular control apparatus for a vehicle has a twin clutch type automatic transmission. The control apparatus comprises an external information acquisition apparatus for acquiring external information required for vehicular transmission control, an input section for taking in the external information from the external information acquisition apparatus; and a pre-shift gear selection section for selecting a predetermined gear train among plural gear trains of the transmission to execute a pre-shift in accordance with the external information.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a system structure diagram showing a main portion of a vehicular control apparatus for a vehicle having a twin clutch type transmission of a first embodiment of the present invention;

FIG. 2 is a skeleton diagram showing the twin clutch type transmission of the first embodiment of the present invention;

FIG. 3 is a control block diagram showing a transmission control apparatus 100 of the first embodiment of the present invention;

FIG. 4 is a schematic diagram of a data map for a pre-shift gear selection for an automatic shifting mode;

FIG. 5 is a schematic diagram of a data map for a pre-shift gear selection for a manual shifting mode;

FIG. 6 is an external view of shifting mode switch means 105 of the first embodiment of the present invention;

FIG. 7 is a flowchart showing main processes of the transmission control apparatus 100 of the first embodiment of the present invention;

FIG. 8 is a flowchart explaining a pre-shift gear selection section in the automatic shifting mode;

FIG. 9 is a flowchart explaining a pre-shift gear selection section in the manual shifting mode;

FIG. 10 is a time chart explaining a main portion of a control of the transmission control apparatus 100;

FIG. 11 is a time chart explaining a main portion of a control of the transmission control apparatus 100;

FIG. 12 is a time chart explaining a main portion of a control of the transmission control apparatus 100;

FIG. 13 is a system structure diagram showing a main portion of a vehicular transmission control apparatus for a vehicle having a twin clutch type transmission of a second embodiment of the present invention; and

FIG. 14 is a flowchart showing main processes of the transmission control apparatus 100 of the second embodiment of the present invention.

Claims

1. A vehicular control apparatus for a vehicle having a twin clutch type automatic transmission, the control apparatus comprising: an external information acquisition apparatus for acquiring external information required for vehicular transmission control;an input section for taking in the external information from the external information acquisition apparatus; anda pre-shift gear selection section for selecting a predetermined gear train among plural gear trains of the transmission to execute a pre-shift in accordance with the external information.

2. The vehicular control apparatus according to claim 1, wherein the automatic transmission is configured so that an output shaft of one of two clutches, whose input shafts are respectively connected to an output shaft of an engine as power source, is selectively connected to an output shaft of the transmission by selecting one of plural gear trains between output shafts of the two clutches and the output shaft of the transmission, and one of the clutches is engaged and another is disengaged to achieve a desired gear position.

3. The vehicular control apparatus according to claim 2, wherein the pre-shift is executed by making a next predicted gear position standby during vehicle traveling, by connecting an output shaft of a currently disengaged clutch of the twin clutches to the output shaft of the transmission via a predetermined gear train, which is the one different from a currently used gear train between a currently engaged clutch and the output shaft of the transmission for gear shifting.

4. The vehicular control apparatus according to claim 1, comprising a shifting mode switch section for switching between an automatic shifting mode and a manual shifting mode, wherein the pre-shift gear selection section executes the pre-shift in accordance with the external information when the shifting mode is the manual shifting mode.

5. The vehicular control apparatus according to claim 4, wherein the pre-shift gear selection section comprises a first pre-shift gear selection section executed in the automatic transmission mode and a second pre-shift gear selection section executed in the manual transmission mode.

6. The vehicular control apparatus according to claim 1, wherein the external information acquisition section is at least one of a navigation apparatus, a radar apparatus, a camera apparatus, and a communication section for communicating with an external system outside the vehicle.

7. A vehicular control method for controlling a vehicle having a twin clutch type automatic transmission, the method comprising the steps of: acquiring external information required for vehicular transmission control; andselecting a predetermined gear train among plural gear trains of the transmission for executing a pre-shift in accordance with the external information.

8. The vehicular control method according to claim 7, wherein said control method is applied for the following automatic transmission, which is configured so that an output shaft of one of two clutches, whose input shafts are respectively connected to an output shaft of an engine as power source, is selectively connected to an output shaft of the transmission by selecting one of plural gear trains between clutch output shafts and the output shaft of the transmission, and one of the clutches is engaged and another is disengaged to achieve a desired gear position.

9. The vehicular control method according to claim 8, wherein the pre-shift is executed by making a next predicted gear position standby during vehicle traveling, by connecting an output shaft of a currently disengaged clutch of the twin clutches to the output shaft of the transmission via a predetermined gear train, which is the one different from a currently used gear train between a currently engaged clutch and the output shaft of the transmission for gear shifting.

10. The vehicular control method of claim 7, further comprising an automatic shifting mode for automatically controlling an operation of the transmission and a manual shifting mode for manually operating the transmission,wherein prior to executing the pre-shift, selecting one of an automatic shifting mode and a manual shifting mode by switching operation, andexecuting the pre-shift in accordance with the external information when the sifting mode is the manual shifting mode.