IP Library Granted Patent US 10,486,697
Granted Patent B2
US 10,486,697 · App. 15/775,327 · Granted Nov 26, 2019

Work vehicle

Inventors: Kouhei Ogura (Osaka, JP); Toshiyuki Miwa (Osaka, JP); Kenta Ikenori (Osaka, JP)
Assignee: YANMAR CO., LTD.
B60W30/143B60K20/00B60K20/02B60K31/00B60W10/06B60W10/103B60W30/14B60W30/146B60W50/082F02D29/02F16H59/02F16H59/06F16H59/50F16H61/00F16H61/66F16H63/50B60W2300/152B60W2540/10B60W2540/16B60W2710/0644B60W2710/1005B60W2720/10F16H59/12F16H2059/0234G05G1/06
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Quick Facts
Patent No.
US 10,486,697
App. No.
15/775,327
Granted
Nov 26, 2019
Kind
B2
Abstract

A work vehicle including: a hydraulic stepless transmission that shifts a speed of a driving force from an engine; a gear shift pedal that performs an acceleration/deceleration operation of a shifted output from the hydraulic stepless transmission; a control section that controls the engine and the hydraulic stepless transmission based on an operation amount of the gear shift pedal; and acceleration/deceleration switches that increase and reduce a vehicle speed in performing an auto-cruise mode. The control section stores a set maximum vehicle speed. In a case where the acceleration/deceleration switches are operated in the auto-cruise mode, the control section increases and reduces the vehicle speed stored in shifting to the auto-cruise mode based on the amount of change in accordance with the maximum vehicle speed.

Claims (16)

1. A work vehicle comprising an engine mounted on a traveling body including a traveling wheel, a hydraulic stepless transmission mechanism configured to shift a speed of a driving force from the engine, a gear shift pedal configured to perform an acceleration/deceleration operation of a shifted output from the hydraulic stepless transmission mechanism, and a control section configured to control the engine and the hydraulic stepless transmission mechanism based on an operation amount of the gear shift pedal, the work vehicle being capable of performing an auto-cruise mode of keeping a vehicle speed substantially constant, the work vehicle further comprising:

an acceleration/deceleration switch configured to increase and reduce a vehicle speed in performing the auto-cruise mode, wherein

the control section stores a maximum vehicle speed set for each of a plurality of traveling modes, and

in a case where the acceleration/deceleration switch is operated in the auto-cruise mode, the control section increases and reduces a vehicle speed stored in shifting to the auto-cruise mode in accordance with the maximum vehicle speed.

2. The work vehicle according to claim 1 , further comprising:

a mode shift switch configured to perform switching among the plurality of traveling modes, wherein

the control section stores the maximum vehicle speed set for each of the plurality of traveling modes, and

in a case where the acceleration/deceleration switch is operated in the auto-cruise mode, the control section increases and reduces the vehicle speed stored in shifting to the auto-cruise mode depending on an amount of change in accordance with the maximum vehicle speed in the traveling mode specified by the mode shift switch.

3. The work vehicle according to claim 2 , further comprising:

an accelerator cooperation switch configured to perform an accelerator cooperation control of changing a vehicle speed in accordance with a pressing amount of the gear shift pedal and changing number of revolutions of the engine, wherein

in a case of shifting to the auto-cruise mode in performing the accelerator cooperation control, when the control section receives an operation on the acceleration/deceleration switch, the control section increases and reduces the vehicle speed and the number of revolutions of the engine stored in shifting to the auto-cruise mode.

4. The work vehicle according to claim 3 , wherein

the control section stores a maximum number of revolutions of the engine set for each of the plurality of traveling modes, and

in a case where the acceleration/deceleration switch is operated in the auto-cruise mode during execution of the accelerator cooperation control, the control section increases and reduces the number of revolutions of the engine stored in shifting to the auto-cruise mode depending on an amount of change in accordance with the maximum number of revolutions of the engine in the traveling mode specified by the mode shift switch.

5. The work vehicle according to claim 3 , wherein in a case where the acceleration/deceleration switch is operated in the auto-cruise mode, the control section increases and reduces the number of revolutions of the engine stored in shifting to the auto-cruise mode depending on an amount of change in accordance with an actual number of revolutions of the engine in shifting to the auto-cruise mode.

6. The work vehicle according to claim 1 , wherein in a case where the acceleration/deceleration switch is operated in the auto-cruise mode, the control section increases and reduces the vehicle speed stored in shifting to the auto-cruise mode depending on an amount of change in accordance with an actual vehicle speed in shifting to the auto-cruise mode.

Assignments (2)
CHANGE OF NAME Recorded Aug 26, 2020
From: YANMAR CO., LTD.
To: YANMAR POWER TECHNOLOGY CO., LTD.
Reel/Frame 054162/0112 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2018
From: OGURA, KOUHEI; MIWA, TOSHIYUKI; IKENORI, KENTA
To: YANMAR CO., LTD.
Reel/Frame 046127/0264 →
Priority Claims (1)
JP 2015-223378 · Nov 13, 2015 · national
Continuity (1)
Related Publication 20180319398A1 · Nov 8, 2018