Engine torque limiting device and engine

Abstract

The invention discloses an engine torque limiting device. An engine is provided with an accelerator draw bar and a detecting mechanism detecting whether tail gas emission exceeds standards or not. The torque limiting device comprises a torque limiting mechanism, and the torque limiting mechanism comprises a driving device and a limiting component capable of limiting displacement of the accelerator draw bar. The driving device is provided with a starting end which starts the driving device according to a detected standard exceeding signal of the detecting mechanism, and when the detecting mechanism receives the standard exceeding signal, the starting end starts the driving device to drive the limiting component to act, so that the displacement range of the accelerator draw bar is limited. When detecting that tail gas of the engine exceeds standards, the detecting mechanism prompts to start the torque limiting mechanism, so that the limiting component limits displacement of the accelerator draw bar, oil injection quantity of the engine is reduced while the displacement range of the accelerator draw bar is decreased, and torque provided by the engine is further reduced. The invention further provides the engine comprising the torque limiting device.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine torque limiting device. Furthermore, the present invention also relates to an engine comprising the above-mentioned engine torque limiting device. Background technique [0002] With the rapid development of my country's economic construction, diesel engines are gradually being widely used due to their high power and good economic benefits. [0003] The working principle of the diesel engine is to use compressed air to increase the air temperature, so that the air temperature exceeds the self-ignition ignition point of diesel, and then inject diesel, and the diesel spray can ignite and burn by itself while mixing with air. Therefore, diesel engines do not require an ignition system and have a relatively simple fuel supply system. [0004] Each working cycle of a diesel engine includes four strokes of intake, compression, power and exhaust. Diesel engines have the abov...

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Problems solved by technology

[0008] However, the current mechanical pump diesel engine does not have a torque limiting device. If the operator knows that the exhaust gas is not up to standard and ignores it, the engine can still run normally and provide enough torque for power requirements.

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