Control method for reducing starting load of engine

Abstract

The invention discloses a control method for reducing the starting load of an engine. The control method comprises the following control steps that a controller judges the starting mode of the engine, if the engine adopts an electric starting mode, and when the rotating speed N of the engine is greater than or equal to the threshold Ne1, the controller controls a generator to output electric energy, and controls the generator to supply power to the load after time delay T1; if the engine adopts a storage battery recoil starting mode, when the number of rotation turns K of an engine motor is larger than or equal to the threshold Ke1 and the rotation speed N of the engine is larger than or equal to the threshold Ne1, the controller controls the generator to output electric energy, and the generator is controlled to supply power to the load after time delay T1; and if the engine adopts a battery-free recoil starting mode, when the rotating speed N of the engine is larger than or equal to the threshold Ne2, the controller controls the generator to output electric energy, and when the number of rotation turns K of the engine motor is larger than or equal to the threshold Ke2 and the rotation speed N of the engine is larger than or equal to the threshold Ne1, power is supplied to the load after time delay T2. According to the control method, the starting load of the engine at the initial starting stage can be reduced, and the starting success rate of the engine is greatly increased.

Description

technical field [0001] The invention relates to the technical field of engine control, and specifically provides a control method for reducing engine startup load. Background technique [0002] The starting methods of existing motorcycles can be divided into two types: electric starting and recoil starting, wherein the electric starting is to start the engine by obtaining electric power from the battery through a starter motor or an integrated starter generator system (ISG); The recoil start is started by the driver pressing down on the starter pedal. attached figure 1 It shows a diagram of an engine start-up control system integrated with start-up and power generation. [0003] However, the above two starting methods, especially when recoil starting is used, the engine is in an unstable running state at the initial stage of engine starting operation. At this time, if the engine motor outputs electric energy, charges the battery or opens other headlights, etc.), it will c...

AI Technical Summary

Problems solved by technology

[0003] However, the above two starting methods, especially when recoil starting is used, the engine is in an unstable running state at the initial stage of engine starting operation. At this time, if the engine motor outputs electric energy, charges the battery or opens other headlights, etc.), it will cause the engine electromagnetic resistance to increase, the motor's moment of inertia to be insufficient, the speed to decrease, and the number of effective ignition rotations to decrease, which will cause the engine to fail to start.

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