JPS5840501U - fluid pressure governor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram showing an example of a conventional hydraulic governor, Fig. 2 is a speed regulating characteristic diagram of the same pressure governor, Fig. 3 is a schematic explanatory diagram showing an embodiment of the present invention, and Fig. 4 is the same. An explanatory diagram of the operation of the embodiment, and FIG. 5 is a speed regulating characteristic diagram of the embodiment. 10... Lubricating oil reservoir, 12... Oil passage,
14... Gear + pump, 16... Throttle valve, 18... Link mechanism, 20... Lid, 22... Bypass passage, 24...
Fluid chamber, 26...Piston, 32...
Main spring, 36...Rod, 38...
... Link mechanism, 40 ... Idle spring, 42 ... Connection mechanism.

Claims (1)

[Scope of utility model registration request] A fluid passageway with both ends communicating with a fluid reservoir and a fluid pump driven by an engine installed in the middle, and a fluid passageway on the discharge side of the fluid pump, which changes the fluid pressure in the fluid passageway on the discharge side. A throttle valve that controls the passage area to
A control mechanism connected to the throttle valve to operate a counter valve, one end communicating with a fluid passage between the fluid pump installation position and the throttle valve installation position, and the other end downstream of the throttle valve installation position. a bypass passage communicating with the side fluid passage and having a fluid chamber for a differential pressure response device formed in the middle, disposed in the fluid chamber;
The same chamber is divided into a first compartment communicating with the one end and a second compartment communicating with the other end, and is displaced according to the pressure difference between the fluid pressure in the first compartment and the fluid pressure in the second compartment. a movable partition wall that connects the movable partition wall to an injection amount control mechanism of the combustion injection device of the engine, and controls the injection amount so that the injection amount decreases when the movable partition wall moves toward the second compartment side; A first connecting mechanism that operates the control mechanism is constantly engaged with the movable partition wall or the first connecting mechanism to act to urge the movable partition wall toward the first compartment, and the pressure difference is zero. a first spring having an initial biasing force to hold the movable bulkhead at a set position in the fluid chamber; a first spring connected to the control mechanism via a second connection mechanism; and a passage area of the throttle valve; The movable bulkhead is displaced in response to a control operation, and when the movable bulkhead is located at the set position, the movable bulkhead or the first coupling mechanism is disposed so as to be spaced apart from the movable bulkhead or the first coupling mechanism. A second spring acts to bias the movable bulkhead toward the first compartment when engaged with the mechanism, and when the throttle valve controls the passage area of the fluid passage to a set value or less, the movable bulkhead Alternatively, the movable bulkhead or the coupling mechanism is configured not to engage with the second spring when the coupling mechanism becomes engageable with the second spring and the throttle valve controls the passage area to be larger than the set value. A fluid pressure governor characterized by: