Internal-combustion engines – Engine speed regulator – Having condition responsive means with engine being part of...
Patent
1989-03-13
1990-06-19
Miller, Carl Stuart
Internal-combustion engines
Engine speed regulator
Having condition responsive means with engine being part of...
123364, F02M 3900
Patent
active
049343262
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fuel injection rate control apparatus for a V-engine and, more particularly, to a fuel injection rate control apparatus for a V-engine having a pair of fuel injection pumps for the respective banks on both sides of a cylinder block, the control apparatus having a link mechanism which secures a predetermined rotational speed whether the engine is inclined forward or backward.
BACKGROUND ART OF THE INVENTION
Conventionally, a pair of fuel injection pump bodies are mounted on both sides of the cylinder block of a V-engine such that when both rack rods move in the same direction, the same function is displayed. One of the fuel injection pumps is provided with a governor, while the other fuel injection pump has no governor, and the movement of the rack rod of the fuel injection pump provided with the governor is transmitted to the rack rod of the fuel injection pump having no governor through a link mechanism. That is, a link mechanism such as that shown in FIG. 1 is widely used.
In FIG. 1, the symbols a and a' both represent a fuel injection pump. The fuel injection pump a' is mounted in the state in which it faces the same direction as the fuel injection pump a. In other words, both fuel injection pumps a and a' are mounted such that when the respective rack rods c move in the same direction, the same function is displayed. The symbol b represents a pump governor which is mounted on the fuel injection pump a so as to control the fuel injection rate by moving the rack rod c of the fuel injection pump a in correspondence with the change of the engine load. Since no governor is mounted on the fuel injection pump a', the movement of the rack rod c of the fuel injection pump a is transmitted to the rack rod c of the fuel injection pump a' by a link mechanism composed of levers d.sub.2-1 and d.sub.2-2 which are fixed to a connecting shaft d.sub.1 in such a manner as to project in the same direction from both sides thereof and a link d.sub.3.
The above-described conventional control apparatus is disadvantageous in that when the engine is inclined forward, the rotational speed of the engine is increased because the levers d.sub.2-1 and d.sub.2-2 are moved in the direction of increasing the fuel under the weights of their own gravities, while the rotational speed of the engine is reduced when it is inclined backward.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to eliminate the above-described problems in the prior art and to provide a fuel injection rate control apparatus for a V-engine in which a pair of levers which are conventionally fixed to a connection shaft as members of a link mechanism in such a manner as to project in the same direction from both sides of the connection shaft are fixed thereto in such a manner as to project in the opposite directions to each other with respect to the connecting shaft, thereby cancelling the weights of the levers whether the engine is inclined forward or backward so that either state of the engine does not exert any influence on the rack rods. When the levers are attached in the directions symmetrical to each other in this way, the right and left levers move in the opposite directions, so that it is possible to control the fuel injection rate without any trouble even if the right and left fuel injection pumps are mounted in the opposite directions to each other and the governor used may be a commonly mass-produced inexpensive governor.
To achieve this aim, the present invention provides a fuel injection rate control apparatus for a V-engine including a fuel injection pump provided with a governor and mounted on one side of a cylinder block, and a fuel injection pump having no governor which is mounted on the other side of the cylinder block, characterized in that a link mechanism is provided which is composed of a connecting shaft rotatably provided in front of the two fuel injection pumps so as to transmit the movement of a rack rod of the governor-carrying fuel inje
REFERENCES:
patent: 1158000 (1915-10-01), Moreton
patent: 3934568 (1976-01-01), Malyshev et al.
patent: 4091785 (1978-05-01), Montgomery
patent: 4150650 (1979-04-01), Tsumura
patent: 4813389 (1989-03-01), Elsbett
Fujimoto Katsuya
Nihei Chuukichi
Tanozaki Tsuneo
Ueno Mitsuru
Yamamoto Yukio
Kabushiki Kaisha Komatsu Seisakusho
Kananen Ronald P.
Miller Carl Stuart
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