US-12618462-B2 - Motorcycle

Abstract

A motorcycle that inhibits damage to a transmission and a clutch. The motorcycle includes: a drive motor; a transmission; a clutch that connects or disconnects power transmission between the transmission and the drive motor; a mechanical oil pump that is driven by the drive motor to supply a coolant to the drive motor and the transmission; and a control portion that drives the drive motor to supply the coolant to the drive motor and the transmission if an accelerator operation is not detected and a neutral state is detected, or if an accelerator operation is not detected and a disconnected state of the clutch is detected.

Inventors

• Yasushi Fujimoto
• Yoshiaki Tsukada
• Takashi Ozeki

Assignees

• HONDA MOTOR CO., LTD.

Dates

Publication Date

20260505

Application Date

20230124

Priority Date

20220330

Claims (1)

1. 1 . A motorcycle comprising: a drive motor; a transmission; a mechanical oil pump that is driven by the drive motor to supply a coolant to the drive motor and the transmission; a notification portion; and a control portion that drives the drive motor to supply the coolant to the drive motor and the transmission if an ignition switch is turned ON, wherein, if the ignition switch is turned ON, the control portion causes the notification portion to make a notification of the driving of the drive motor.

Description

TECHNICAL FIELD The present invention relates to a motorcycle. BACKGROUND ART Technologies for preventing a delay in supplying oil to a transmission caused when a vehicle starts traveling are conventionally known. For example, Patent Literature 1 discloses a hydraulic control apparatus for a hybrid vehicle equipped with an engine and an electric motor as power sources, where the hydraulic control apparatus starts an oil pump to supply oil to a transmission before power is transmitted from the power source to the transmission. CITATION LIST Patent Literature [Patent Literature 1]Japanese Patent Laid-Open No. 9-286245 SUMMARY OF INVENTION Technical Problem In motorcycles, it is common to use a drive motor to drive an oil pump instead of using an electric oil pump for cost reduction and size reduction. Thus, a structure that inhibits damage to the transmission and the like is desired also for motorcycles that do not have the electric oil pump. The present invention has been achieved in view of the situation described above and has an object of inhibiting damage to a transmission and a clutch. Solution to Problem Japanese Patent Application No. 2022-057690 filed on Mar. 30, 2022, is incorporated herein. The present disclosure is a motorcycle including: a drive motor; a transmission; a clutch that connects or disconnects power transmission between the transmission and the drive motor; a mechanical oil pump that is driven by the drive motor to supply a coolant to the drive motor and the transmission; a first sensor that detects whether a gear position of the transmission is in a neutral state; a second sensor that detects a connect/disconnect state of the clutch; a third sensor that detects an accelerator operation; and a control portion that drives the drive motor to supply the coolant to the drive motor and the transmission if an accelerator operation is not detected by the third sensor and the neutral state is detected by the first sensor, or if an accelerator operation is not detected by the third sensor and a disconnected state of the clutch is detected by the second sensor. Advantageous Effects of Invention In accordance with the present disclosure, a lack of oil can be inhibited in a drive motor and a transmission, and thereby the durability of the drive motor and the transmission can be improved. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a side view of a motorcycle. FIG. 2 is a diagram showing a configuration of an ECU and a configuration for operating an oil pump. FIG. 3 is a diagram showing an oil supply path. FIG. 4 is a diagram showing a relationship between the number of revolutions of a drive motor and elapsed time. FIG. 5 is a flowchart showing an operation of an ECU performed when a third drive condition is satisfied. FIG. 6 is a flowchart showing an operation of the ECU performed when a fourth drive condition is satisfied. DESCRIPTION OF EMBODIMENT An embodiment of the present invention is described below with reference to the drawings. Directions that appear herein, including front, rear, left, and right, are the same as the directions of a vehicle described below, unless otherwise specified. An arrow FR and an arrow UP showing front of the vehicle and top of the vehicle, respectively appear in the drawings used for the following description. FIG. 1 is a diagram showing a left side of a motorcycle 1. The motorcycle 1 of the present embodiment is an electric motorcycle including a motor as a power unit. The motorcycle 1 includes an operating system 5 that includes a throttle grip, a clutch lever, and a change pedal and the like. The motorcycle 1 includes a display portion 7 for displaying information for a rider. The motorcycle 1 includes a front wheel 2, which is a steering control wheel, and a rear wheel 3, which is a driving wheel. The rear wheel 3 is supported to a rear portion of a swing arm that is supported swingably to a vehicle body frame. The vehicle body frame and the swing arm are not shown. The motorcycle 1 includes: an ECU (Electronic Control Unit) 10, which is a control unit for performing various types of control; a drive motor 40 for generating driving power; and a battery 30 for supplying electric power to the drive motor 40 and the like. The drive motor 40 includes a temperature sensor 41 for measuring a temperature of the drive motor 40. The temperature sensor 41 corresponds to a fourth sensor. The motorcycle 1 includes a clutch 50 and a transmission 80 to transmit driving power P of the drive motor 40 to the rear wheel 3. The drive motor 40 and the transmission 80 are controlled by the ECU 10, which performs control in conformity to an instruction given by the rider to the operating system 5. FIG. 2 is a diagram showing a configuration of the ECU 10 and a configuration in which a mechanical oil pump 70 is driven by the drive motor 40. The ECU 10 is a computer device that includes a memory 11 and a processor 13. The memory 11 includes a nonvolatile storage device, such as a ROM