Driving control method for fuel motorcycle

Abstract

This invention relates to a drive control method for a gasoline-powered motorcycle, which includes a battery, a start-up and power generation control system, an engine fuel injection control system, and an engine with a crankshaft. The start-up and power generation control system includes a start-up and power generation controller and a start-up and power generation device. The start-up and power generation controller is electrically connected to the battery and the start-up and power generation device, and communicatively connected to the engine fuel injection control system. The start-up and power generation device is coaxially mounted with the crankshaft and includes a start-up mode, a power generation mode, and a power assist mode. The engine fuel injection control system is electrically connected to the battery and the engine to control appropriate fuel injection ignition timing. Therefore, through the drive control method of this invention, when the user needs to accelerate while riding, the start-up and power generation controller can switch the start-up and power generation device to power assist mode, providing appropriate drive torque to accelerate the engine, thereby improving the overall power performance of the motorcycle.

Claims

1. A drive control method for a gasoline-powered locomotive, the locomotive comprising a battery, a start-up and power generation control system, an engine fuel injection control system, and an engine having a crankshaft, the start-up and power generation control system comprising a start-up and power generation controller and a start-up and power generation device, the start-up and power generation controller being electrically connected to the battery and the start-up and power generation device respectively, and communicatively connected to the engine fuel injection control system, the start-up and power generation device being coaxially mounted with the crankshaft, including a start-up mode, a power generation mode, and a power assist mode, the engine fuel injection control system being electrically connected to the battery and the engine respectively, for controlling appropriate fuel injection ignition timing; wherein... The drive control method for the fuel-powered locomotive includes the following steps: (A) The starting and generating device starts the engine in the starting mode, and switches to the generating mode after the engine starts, and executes step (B); (B) Determines whether one of the usage conditions of the assist mode is met, wherein the usage condition is that the battery voltage is greater than a first voltage threshold. If yes, execute step (C1); otherwise, execute step (C2); (C1) While the engine is running, the starting and generating device remains in the generating mode, and the assist mode is available, and executes step (D); (C2) While the engine is running, the starting and generating device remains in the generating mode, and the assist mode is not available; (D) Determines whether one of the activation conditions of the assist mode is met, wherein the activation condition is that the engine speed is within a specific engine speed range, the engine speed change is greater than an engine speed change threshold, the engine speed change time is less than an engine speed change time threshold, and the battery voltage is greater than a second voltage threshold. If yes, execute step (E); otherwise, return to step (C1). (E) The starter and generator switch to the boost mode, providing the engine with a driving torque to accelerate the engine, and execute step (F); (F) Determine whether one of the termination conditions of the boost mode is met, the termination condition being that the driving action time of the boost mode is greater than a driving action time threshold, the engine speed after a specific time point is less than an engine speed threshold, or the battery voltage is less than a third voltage threshold. If yes, execute step (G), otherwise return to step (E); and (G) Determine whether one of the reuse conditions of the boost mode is met, the reuse condition being that the battery voltage is greater than or equal to a fourth voltage threshold, and the starter and generator controller sets a recovery time based on the battery voltage or the remaining battery capacity, and the waiting time for switching from the boost mode to the generator mode exceeds the recovery time. If yes, return to step (C1), otherwise return to step (C2).

2. The drive control method for a fuel-powered locomotive as described in claim 1, wherein, The battery system can be lead-acid battery, lithium battery, or energy capacitor.

3. The drive control method for a fuel-powered locomotive as described in claim 1, wherein, The battery has a voltage of 12 volts or 48 volts.

4. The drive control method for a fuel-powered locomotive as described in claim 1, wherein, The starter-generator is a brushless motor, and the drive torque in the boost mode is the torque provided by the starter-generator to the crankshaft for the same direction of rotation.

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