Air-fuel ratio adjustment system with parking function

Abstract

The invention discloses an air-fuel ratio adjustment system with a parking function. The air-fuel ratio adjustment system comprises an engine, a fuel injection pump, an adjustment arm, a switch piece, a cylinder, a controller and a compressed air system. A fuel injection rack is mounted on one side of the fuel injection pump, and the fuel injection rack is connected with the adjustment arm through a connecting rod mechanism. The switch piece is mounted on the adjustment arm and the adjustment arm is provided with a signal sensor. The cylinder is arranged on the upper portion of the adjustment arm, and an inner cavity of the cylinder is provided with a piston and a piston rod. The compressed air system is provided with a first air connection pipe, a second air connection pipe and corresponding solenoid valves mounted on the air connection pipes correspondingly. The first air connection pipe communicates a main air inlet pipe, and an engine air inlet pipe and a cylinder air inlet pipe are mounted on the both sides of the main air inlet pipe correspondingly. The second air connection pipe connected to the compressed air system communicates with the upper end of the cylinder. According to the air-fuel ratio adjustment system with the parking function, the problem that black smoke is generated due to the insufficient combustion of the fuel in of the starting and sudden loading process of a diesel engine can be solved, and the emergency parking function of the engine can be realized.

Description

technical field [0001] The invention relates to a fuel supply regulating system, in particular to an air-fuel ratio regulating system with a parking function. Background technique [0002] Within a few seconds or even more than ten seconds after the high-power diesel engine is started, the fuel supply will be large, and the air-fuel ratio will be out of balance due to insufficient air supply. Finally, the fuel will not burn completely, resulting in a large amount of black smoke. This smoky condition also occurs during load surges. [0003] Such a phenomenon is not only a waste of fuel, but also incompletely burned fuel oil will adhere to the exhaust pipe, accumulating stroke dirt for a long time, which is difficult to remove, and may affect the performance of the engine over time. [0004] At the same time, the emergency stop system of a high-power diesel engine generally uses a governor as an emergency stop device. If the governor fails, the emergency stop function of the ...

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Problems solved by technology

[0005] In view of the above deficiencies, the purpose of the present invention is to provide an air-fuel ratio adjustment system with a parking function, which can solve the problem of black smoke due to insufficient fuel combustion during the start-up and sudden loading of the diesel engine, and at the same time realize emergency shutdown of the engine Function

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