Gear shift control device, a vehicle using the same, and gear shift control method

Patent metadata

Field	Value
Publication number	US-10364884-B2
Application number	US-201715447722-A
Country	US
Kind code	B2
Filing date	Mar 2, 2017
Priority date	Mar 2, 2017
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

A gear shift mechanism controlled by a gear shift control device includes a plurality of engagement mechanisms and engages three engagement mechanisms to establish any one of a plurality of shift stages. The gear shift control device is adapted to change speed to a desired shift stage set by a manual operation. If a gear shift to the desired shift stage involves the skipping of one or more shift stages and the switching of two or more engagement mechanisms among the plurality of engagement mechanisms that are currently engaged, then the gear shift control device performs the gear shift to the desired shift stage such that the engagement mechanisms to be switched via a shift stage or stages to be skipped are switched one by one.

First claim

What is claimed is:

1. A gear shift control device adapted to control a gear shift mechanism that enables a rotational speed output from a drive source to be changed into speeds of a plurality of shift stages by a manual operation,
wherein the gear shift mechanism includes a plurality of engagement mechanisms and engages the plurality of engagement mechanisms to establish any one of the plurality of shift stages,
the gear shift control device is adapted to set a desired shift stage based on the manual operation and to perform a gear shift to the set desired shift stage, and
in a case where the gear shift to the desired shift stage is a gear shift that skips one or more shift stages and requires that two or more engagement mechanisms among the plurality of engagement mechanisms that are currently engaged be switched, the gear shift to the desired shift stage is performed such that the engagement mechanisms to be switched via a shift stage or stages to be skipped are switched one by one.

2. The gear shift control device according to claim 1 , wherein
in a case where the gear shift to the desired shift stage is a gear shift that skips two or more shift stages and requires that two or more engagement mechanisms among the plurality of engagement mechanisms that are currently engaged be switched, and a shift stage that permits a skip gear shift exists among the shift stages to be skipped, the gear shift to the desired shift stage is performed such that the gear shift goes through the shift stage that permits the skip gear shift and the engagement mechanisms to be switched are switched one by one.

3. The gear shift control device according to claim 1 , wherein
in a case where the gear shift to the desired shift stage is a gear shift that skips two or more shift stages and requires that two or more engagement mechanisms among the plurality of engagement mechanisms that are currently engaged be switched, and a shift stage that permits a skip gear shift to the desired shift stage exists among the shift stages to be skipped, the gear shift to the desired shift stage is performed, after the gear shift to the shift stage that permits the skip gear shift is completed, such that the engagement mechanisms to be switched are switched via the shift stage that permits the skip gear shift to the desired shift stage and are switched one by one.

4. The gear shift control device according to claim 1 , wherein
the gear shift mechanism is adapted to engage three or more engagement mechanisms to establish any one of the plurality of shift stages.

5. A vehicle comprising:
the gear shift control device according to claim 1 ;
the drive source; and
the gear shift mechanism having the plurality of engagement mechanisms.

6. A gear shift control device adapted to control a gear shift mechanism that enables a rotational speed output from a drive source to be changed into speeds of a plurality of shift stages by a manual operation,
wherein the gear shift mechanism includes a plurality of engagement mechanisms and engages the plurality of engagement mechanisms to establish any one of the plurality of shift stages,
the gear shift control device is adapted to set a desired shift stage based on the manual operation and to perform a gear shift to the set desired shift stage, and
in a case where the gear shift to the desired shift stage is a gear shift that skips one or more shift stages and requires that two or more engagement mechanisms among the plurality of engagement mechanisms that are currently engaged be switched, the desired shift stage is changed to a shift stage that involves one engagement mechanism to be switched among shift stages scheduled to be skipped.

7. The gear shift control device according to claim 6 , wherein
in a case where the gear shift to the desired shift stage is a gear shift that skips two or more shift stages and requires that two or more engagement mechanisms among the plurality of engagement mechanisms that are currently engaged be switched, and a shift stage that permits a skip gear shift exists among the shift stages to be skipped, the desired shift stage is changed to the shift stage which permits the skip gear shift and which is to he skipped.

8. The gear shift control device according to claim 6 , wherein
the gear shift, mechanism is adapted to engage three or more engagement mechanisms to establish any one of the plurality of shift stages.

9. A vehicle comprising:
the gear shift control device according to claim 6 ;
the drive source; and
the gear shift mechanism having the plurality of engagement mechanisms.

10. A gear shift control method for controlling a gear shift mechanism that enables a rotational speed output from a drive source to be changed into speeds of a plurality of shift stages by a manual operation,
wherein the gear shift mechanism includes a plurality of engagement mechanisms and engages the plurality of engagement mechanisms to establish any one of the plurality of shift stages, and
the gear shift control method comprises:
a target step of setting a desired shift stage based on the manual operation; a verifying step of determining whether the gear shift to the desired shift stage is a gear shift that skips one or more shift stages and whether the gear shift is in a direct gear shift disabled state in which two or more engagement mechanisms among the plurality of engagement mechanisms currently engaged are required to be switched; and
a gear shift step of performing, in a case where the gear shift is in the direct gear shift disabled state, the gear shift to the desired shift stage such that the engagement mechanisms to be switched via a shift stage to be skipped are switched one by one.

11. The gear shift control method according to claim 10 ,
wherein the verifying step verifies whether the gear shift to the desired shift stage is a gear shift that skips two or more shift stages, whether the gear shift requires that two or more engagement mechanisms among the plurality of engagement mechanisms that are currently engaged be switched, and whether the gear shift is in the direct gear shift disabled state in which a shift stage that permits a skip gear shift exists among the shift stages to be skipped, and
the gear shift step performs, in a case where the gear shift is in the direct gear shift disabled state, a gear shift to the desired shift stage via a shift stage or stages to be skipped that permit the skip gear shift and such that the engagement mechanisms to be switched are switched one by one.

12. The gear shift control method according to claim 10 ,
wherein the verifying step verifies whether the gear shift to the desired shift stage is a gear shift that skips two or more shift stages, whether the gear shift requires that two or more engagement mechanisms among the plurality of engagement mechanisms currently engaged be switched, and whether the gear shift is in the direct gear shift disabled state in which a shift stage that permits a skip gear shift to the desired shift stage exists among the shift stages to be skipped, and
the gear shift step performs, in a case where the gear shift is in the direct gear shift disabled state, the gear shift to the desired shift stage via a shift stage or stages to be skipped that permit the skip gear shift to the desired shift stage and such that the engagement mechanisms to be switched are switched one by one.

13. The gear shift control method according to claim 10 ,
wherein the gear shift mechanism engages three or more engagement mechanisms to establish any one of the plurality of shift stages.

14. A gear shift control method for controlling a gear

Assignees

• Honda Motor Co Ltd

Inventors

• Sasahara Kazuma
• Kameda Shintaro
• Hopp Christopher

Classifications

• F16H61/0248 Primary

  Control units where shifting is directly initiated by the driver, e.g. semi-automatic transmissions · CPC title

• F16H2200/2082

  one freewheel mechanisms · CPC title

• F16H2200/2066

  using one freewheel mechanism · CPC title

• F16H2200/2048

  with seven engaging means · CPC title

• F16H2200/0069

  the gear ratios comprising ten forward speeds · CPC title