Mechanical oil pump diesel engine maximum speed limiter
A technology of maximum vehicle speed and mechanical oil pump, which is applied in mechanical equipment, engine control, machine/engine, etc., can solve the problems that cannot meet the mandatory speed limit requirements of some road vehicles, control the fuel injection volume of mechanical oil pumps, and do not apply to market demand, etc. Achieve the effect of realizing the maximum speed limit, stable speed control, and reliable maximum speed limit
Active Publication Date: 2015-10-28
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
[0003] However, at present, mechanical oil pumps are still widely used in China, and mechanical oil pumps cannot directly control the fuel injection volume according to vehicle speed, so they cannot meet the mandatory speed limit requirements for some road vehicles.
If the mechanical fuel system is directly upgraded to an electronic control system, the cost will increase significantly, which is difficult for users to accept and not suitable for market demand
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[0018] A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.
[0019] see figure 1 , the mechanical oil pump diesel engine maximum speed limiting device includes: fuel quantity control actuator 2, vehicle speed sensor 4, ignition key switch 5, controller 6, retarder request switch 7. Among them, the oil quantity control actuator 2 is installed on the oil pump 1, and pushes the oil stop handle 3 of the oil pump 1 through the connecting rod mechanism 21, and the oil stop handle 3 can directly control the oil supply rack of the oil pump 1 (not shown in the figure) The maximum fuel supply position, so that the fuel quantity control actuator 2 adjusts the maximum allowable fuel injection quantity of the oil pump by pushing the oil stop handle 3.
[0020] The vehicle speed sensor 4 is inst...
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The invention discloses a mechanical fuel pump diesel maximum speed limiting device. The limiting device comprises a fuel capacity control execution mechanism, a speed sensor, an ignition key switch and a controller, wherein the fuel capacity control execution mechanism is installed on an fuel pump and pushes an fuel cut-off handle of the fuel pump to rotate through a link mechanism; the speed sensor is used as a speed measuring element and installed on a gearbox, and the output end of the speed sensor is connected with the controller; the ignition key switch is used for providing power-on initialization control input signals and halt control input signals for the controller; the controller controls the fuel capacity control execution mechanism according to speed detected by the speed sensor. According to the mechanical fuel pump diesel maximum speed limiting device, the existing fuel cut-off handle of the fuel pump itself is directly utilized to conducting control, the fuel injection amount can be controlled according to the speed without greatly changing the fuel pump, and the mechanical fuel pump diesel maximum speed limiting device is simple in structure and low in cost.
Description
technical field [0001] The invention relates to the field of diesel engines, in particular to a device for limiting the maximum vehicle speed of a mechanical oil pump diesel engine. Background technique [0002] In the currently used diesel engines, the speed limit can be controlled by the electronically controlled fuel system to control the fuel injection amount according to the vehicle speed. [0003] However, at present, mechanical oil pumps are still widely used in China, and mechanical oil pumps cannot directly control the fuel injection volume according to vehicle speed, so they cannot meet the mandatory speed limit requirements for some road vehicles. If the mechanical fuel system is directly upgraded to an electronic control system, the cost will increase significantly, which is difficult for users to accept and does not meet market demand. Contents of the invention [0004] The technical problem solved by the invention is to provide a maximum vehicle speed limiti...
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IPC IPC(8): F02D41/30F02D1/04
Inventor 陈俊红叶宇莫宗华冯静钟晓波林志强安利强
Owner GUANGXI YUCHAI MASCH CO LTD