JPS63986Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a single bank operation device for starting a V-type diesel engine.

Conventionally, diesel engines produce white smoke when starting, and this is especially noticeable at low temperatures, where it takes a long time to fully detonate.

However, it is clear that there is no white smoke from the cylinders that are not injected with fuel, and the cylinders that are injected with fuel also have a high load from the first explosion because it is necessary to drive one bank of cylinders. , it is estimated that white smoke generation will be reduced.

Therefore, by setting one bank to non-injection, the amount of white smoke at startup will be reduced to less than 1/2.

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to reduce the generation of white smoke during startup by enabling single-bank operation during startup.

Hereinafter, the present invention will be explained with reference to the drawings. In the drawings, numeral 1 is an injection pump without a governor, which is installed in a V-type diesel engine, and numeral 2 is an injection pump with a governor.

A pin 7 is provided at the end of a rack rod 9 of the governorless injection pump 1, and the pin 7 is inserted into the inner surface of a long hole 3 of a connecting member 13 having a length corresponding to the amount of rack movement.

In the drawing, reference numeral 4 denotes a link having a fulcrum P in the center, and one end of the link 4 is connected by a pin 6 to a connecting member 14 at the end of the rack rod 5 of the injection pump 2 with governor.

One end of a spring 8 is fixed to the connecting member 13, and the other end of the spring 8 collides with the pin 7 and presses the pin 7 against the tip side of the elongated hole 3. It consists of

In the normal state, the pin 7 is pressed against the tip side of the elongated hole 3 by the spring 8, and both the rack rods 5 and 9 are interlocked via the link 4.

At startup, the lever 9 of the governorless injection pump 1 is fixed at the fuel stop position manually or by means of a solenoid or the like. At this time, the rack lever 5 of the governor-equipped injection pump 2 moves by the amount of fuel injected at the time of startup, and the link 4 also moves at the same time, but the rack lever 9 is fixed at the fuel stop position, so it is pinned against the spring 8. Only 7 moves into the long hole 3.

For this reason, one bank can be made non-injectable during startup.

What is shown in FIG. 4 is another embodiment of the present invention, in which the fulcrum P of the link 4 is made into a long hole 10, the support shaft 11 is inserted into the long hole 10, and one end of the spring 12 is attached to the fulcrum member 4'. is fixed, and the other end of the spring 12 is attached to the support shaft 11.
and both ends of the link 4 are connected to the rack rods 9 and 5.
It is pin-coupled to.

In this case, by fixing the rack rod 9 at the fuel stop position at the time of starting, even if the other rack rods 5 move by the amount of fuel injected, the fulcrum P only moves against the spring 12, and the rack rod 9 is moved. It is possible to keep the fuel in a stopped state, and one bank can be injected without injection at startup.

The present invention has been described in detail above, and the injection pump 1 without a governor and the injection pump 2 with a governor are arranged in parallel, and the rack rods 9 and 5 of each injection pump 1 and 2 are connected by a link 4 having a fulcrum P in the center. In the connected system, when the rack lever 9 of the injection pump 1 without a governor is fixed at the fuel stop position, the rack lever 5 of the injection pump 1 without a governor moves by the amount of fuel to be injected. Since the transmission force absorption mechanism A that blocks the transmission to the rod 9 side is provided, it is possible to make one side bank non-injected at the time of starting, and it is possible to reduce the generation of white smoke at the time of starting.

[Brief explanation of the drawing]

Fig. 1 is a plan view of one embodiment of the present invention, Fig. 2 is a view taken from the direction of Fig. 1, Fig. 3 is an explanatory diagram of the rack lever at the fuel stop position, and Fig. 4 is a plan view of another embodiment of the present invention. FIG. 2 is a configuration explanatory diagram of an embodiment. 1 is an injection pump without a governor, 2 is an injection pump with a governor, 4 is a link, 5 and 9 are rack rods, and A is a transmission force absorption mechanism.

Claims (1)

[Scope of utility model registration request] An injection pump 1 without a governor and an injection pump 2 with a governor are arranged in parallel and the rack rods 9, 5 of each injection pump 1, 2 are connected by a link 4 having a fulcrum P in the center, and the link 4 has no governor. When the rack lever 9 of the injection pump 1 is fixed at the fuel stop position, a transmission force that blocks the transmission of the movement of the rack lever 5 of the injection pump with governor 2 corresponding to the fuel injection amount to the rack lever 9 side of the injection pump 1 without a governor. A single-bank operating device for a V-type diesel engine, characterized in that an absorption mechanism A is provided.