Travel-increasing control system of travel-increasing type electric automobile

Abstract

The invention discloses a travel-increasing control system of a travel-increasing type electric automobile. An engine controller carries out dynamic control to the work of an oil injector and an ignition coil, and the engine controller calculates an external torque request according to a regulating torque, a reversed towing torque, a combusting torque and a target torque of an engine crankshaft of a current engine ahead of time and sends the external torque request to a travel-increasing controller. The travel-increasing controller and a generator or a motor response to the external torque request, engine rotating speed control is achieved through the balance control of the crankshaft torque, and the practical rotating speed output by the travel-increasing control system is in accordance with a target rotating speed. The travel-increasing control system of the travel-increasing type electric automobile can achieve the control to the rotating speed output by the travel-increasing control system without an electronic-control air damper, the engine can adopt a non-throttle air inlet mode, the control logic of the engine controller is simple, a single-cylinder or double-cylinder motorcycle engine controller and an economical engine controller can be used, and efficiency cost maximization can be achieved.

Description

technical field [0001] The invention relates to electric vehicle technology, in particular to a range-extending control system for an extended-range electric vehicle. Background technique [0002] The drive motor is the only power device for pure electric vehicles. Due to the limitation of battery technology, the cruising range of pure electric vehicles is limited, and gasoline-electric hybrid technology can make up for this shortcoming. [0003] The ignition engine is used to charge the battery when the power is insufficient, but it is not used as a direct power output, and only meets the function of "extended range". This type of extended-range electric vehicle has a simple structure, low development cost, and good economy. more and more widely used. [0004] The current range-extended control system of the extended-range electric vehicle uses a high-end engine controller and an electronic throttle body to control the intake air volume of the engine, thereby controlling t...

AI Technical Summary

Problems solved by technology

[0007] The current range-extended control system of the extended-range electric vehicle uses a multi-cylinder engine, which is large in size and high in cost; it is necessary to use an electronically controlled throttle to control the intake air volume of the engine to control the engine speed to achieve the purpose of range-extended control. Gas throttling loss is large, engine combustion efficiency is low, and cost is high; and because automotive multi-cylinder engines and electronically controlled throttle valves require high-end engine controllers, the control functions are complicated, and the cost of control components is relatively high

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