Engine cooling system for motorcycle

Inactive Publication Date: 2016-06-23
SUZUKI MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention introduces an electrically operated water pump driven by an electric motor, which is separate from the oil pump drive system and independently controlled. This ensures precise flow rate control for cooling the engine, reducing fuel consumption and improving engine output. The water pump is positioned separately from the crankcase to improve vehicle operability, and is free to optimize the cooling path.

Problems solved by technology

Thus the necessity for the water cooling of the engine is limited, that is, in a cold start, heat generation by the engine is used for warming-up the engine itself to reduce an extra heat capacity.
In using an oil pump drive system, under the condition where the amount of the cooling water increases in proportion to engine speed, a thermostat has a limitation in on / off control, and there is a difficulty with precise control for improvement of fuel efficiency.

Method used

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  • Engine cooling system for motorcycle
  • Engine cooling system for motorcycle
  • Engine cooling system for motorcycle

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Embodiment Construction

[0033]The following describes preferred embodiments of an engine cooling system for a motorcycle according to the present invention based on the drawings.

[0034]FIG. 1 is a side view illustrating a state where an engine unit 10 is mounted on a motorcycle 100 as an application example of the present invention. FIG. 2 is a rear perspective view of the engine unit 10. Firstly, a description will be given of a schematic configuration of the motorcycle 100 with reference to FIG. 1. Including FIG. 1, in the drawings used in the following description, an arrow Fr and an arrow Rr indicate forward and backward of the vehicle respectively as necessary. An arrow R and an arrow L indicate the right side and the left side of the side of the vehicle respectively.

[0035]InFIG. 1, a vehicle body frame 101 (main frame) is made of steel or aluminum alloy material. The vehicle body frame 101 includes two right and left front forks 103 turnably supported to right and left by a steering head pipe 102 in t...

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Abstract

An engine cooling system for a motorcycle of the present invention includes an engine that includes a crankcase and a cylinder, a water pump to supply cooling water to the engine, and a radiator that dissipates heat of internally circulating cooling water by receiving a travelling wind. The water pump is an electrically operated type including a driving motor, and disposed independently of the crankcase.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation application of International Application No. PCT / JP2015 / 059687, filed on Mar. 27, 2015 and designated the U.S., which claims the benefit of priority of the prior Japanese Patent Application No. 2014-100664, filed on May 14, 2014, the entire contents of which are incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to an engine cooling system to cool an engine in a vehicle such as a motorcycle.BACKGROUND ART[0003]In a conventional motorcycle, a water-cooled engine uses a rotary driving shaft, a chain, and similar part for driving a lubricating oil pump to drive a water pump with a power of a crankshaft as a driving source.[0004]Here, in examining the necessity of the water pump in this type of vehicle, two main conditions that requires water cooling of the engine are as follows.1) Mounting a high output engine2) Severe using state such as a sudden stop after a continuous hig...

Claims

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Application Information

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IPC IPC(8): F01P5/12F01P3/18F01P3/02
CPCF01P5/12F01P2003/021F01P3/18F01P3/02B62K11/04B62J41/00F02B61/02
InventorTANAKA, KOICHI
OwnerSUZUKI MOTOR CORP