Engine driven working machine

• US 20050191183A1
• Filed: 02/18/2005
• Published: 09/01/2005
• Est. Priority Date: 02/26/2004
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Inagawa, Toshinori, Kawakami, Toshiaki, Wakitani, Tsutomu
• Granted Patent: US 7,762,787 B2
• Time in Patent Office: Days
• US Class Current: 417/34
• CPC Class Codes: F04B 49/02 Stopping, starting, unloading or idling control

Abstract

In an engine drive washing machine, a discharge switch 10 is provided in a jet gun 5. When the switch 10 is turned off, an engine 1 is stopped. When the switch 10 is turned on, the engine 1 is started up to drive a pump 2. When an outlet pressure of the pump 2 is not lower than a predetermined value, a water-discharge valve in the gun 5 is opened to cause the water to be discharged. When the switch 10 is not turned off for a long time, the engine 1 is stopped. When an operator takes up the gun 5 to start the operation, the engine 1 is started up. The engine-drive type of washing machine is provided with a battery 13 for a starter motor, and the battery 13 is charged by a generator function of a starter-motor generator 3 during the operation of the engine 1.

Claims

1. An engine driven type of working machine which has a pump driven by an engine and a discharge device for discharging fluid ejected from the pump, the engine driven type of working machine comprising:

a starter-motor generator which is coupled to the engine, the starter-motor generator acting as a starter motor driven by an electricity supplied with a battery during startup of the engine, the starter-motor generator acting as a generator for charging the battery during operation of the engine;

a unit which detects an operation standby state and a operation state of the discharge device; and

a control unit which stops the engine in the operation standby state and starts up the engine in the operation state to drive the pump.

2. An engine driven type of working machine according to claim 1, further comprising an operation switch which drives the discharge device, wherein the control unit is configured to start up the engine responsive to turn-on of the operation switch.

3. An engine driven type of working machine according to claim 2, further comprising a pressure detection unit which generates a detection output when a pressure on an outlet side of the pump is increased to a predetermined pressure, wherein a valve provided in the discharge device is configured to be opened responsive to the detection output of the pressure detection unit.

4. An engine driven type of working machine according to claim 2, further comprising a timer unit which measures a time interval when the operation switch is continuously turned off and ends the time measurement when the time interval becomes a predetermined value, wherein the engine is configured to be stopped responsive to the end of the time measurement.

5. An engine driven type of working machine according to claim 1, further comprising a standby switch which generates a detection signal when the discharge device becomes a fluid-discharge state, wherein the starter-motor generator acts as the starter motor responsive to the detection signal of the standby switch, and the detection signal is generated when the engine is stopped.

6. An engine driven type of working machine according to claim 1, further comprising a battery-voltage decision unit which generates the detection signal when a voltage of the battery becomes not lower than a predetermined value, wherein the starter-motor generator acts as the generator responsive to the detection signal of the battery-voltage decision unit.

7. An engine driven type of working machine as in any one of claims 1 to 6, in which a water-discharge device is provided as the discharge device, and the pump is configured to eject washing water as the fluid to act as a washing machine.