Coordination control method for torque and rotating speed of engine

Abstract

The invention discloses a coordination control method for torque and rotating speed of an engine. The coordination control method comprises the following steps of S1, analyzing received message data; S2, a message diagnosis process; S3, a message grouping process; S4, a message arbitration process; S5, determining a control parameter set; and S6, executing the engine. The method not only realizes the advantage of engine torque and rotating speed control in the J1939 communication protocol, but also has the following advantages that 1, simplified or fuzzy places of the communication protocol are refined, and ambiguity is reduced; 2, source address priority definition is expanded on the basis of priority control in the communication protocol, the problem of torque and rotating speed control demand coordination of a plurality of control systems is solved, the arbitration process is simplified, and the efficiency is improved; and 3, according to the operation condition of the system, predefined control and limit priorities are dynamically selected, and the flexibility and adaptability of engine torque and rotating speed control are improved.

Description

technical field [0001] The invention relates to an engine control method for automobiles, construction machinery and agricultural equipment, and a fixed power station, in particular to a coordinated control method for engine torque and rotational speed. Background technique [0002] With the increasingly stringent requirements for vehicle safety, comfort, emission and economy, there are more and more electrical appliances and corresponding electronic control units (ECUs) on vehicles, and different external devices can send signals to the engine. Torque and / or speed request, such as the vehicle starting stage, in order to smoothly combine the gears at the start, the gearbox will issue a torque limit request to the engine, and the torque output curve of the engine must follow the torque limit of the gearbox Otherwise, there will be problems such as rushing or slow start of the vehicle, which makes the data exchange between the electronic control units of the vehicle more and m...

AI Technical Summary

Problems solved by technology

The J1939 protocol specifies the encoding definition of torque and speed control information in detail, but there is no detailed coordination control method for engine torque and speed.

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