Automotive range extender based on linear ISG(Integrated Starter and Generator) motor/engine

Abstract

The invention relates to an automotive range extender based on a linear ISG(Integrated Starter and Generator) motor/engine. The range extender comprises cylinders, wherein two piston components are arranged and are respectively located in the two cylinders; the two piston components are connected with the two ends of a connecting rod component; a linear displacement sensor and a Hall sensor are arranged on the connecting rod component; a linear ISG motor rotor is arranged in the middle of the connecting rod component; a linear ISG motor stator is fixed between the two cylinders and outside the linear ISG motor rotor; a scavenging air receiver is arranged on the inner sides of the cylinders; a throttle body is connected with the scavenging air receiver; an oil sprayer, a throttle body position sensor and an air flow sensor are arranged on the throttle body in turn; cylinder covers are arranged on the outer sides of the cylinders; spark plugs are arranged on the cylinder covers; and an electric control unit is respectively in electric connection with the linear displacement sensor, the Hall sensor, the throttle body position sensor and the air flow sensor. Compared with the prior art, the automotive range extender based on the linear ISG motor/engine has the advantages at the aspects of energy use efficiency, cost, mechanical structure, use convenience, and the like.

Description

technical field [0001] The invention relates to a range extender for electric vehicles, which belongs to the field of vehicle engineering, in particular to a range extender for vehicles based on a linear ISG motor / engine. Background technique [0002] Electric vehicles have the characteristics of zero emission, no pollution, and high energy utilization rate, which is in line with the trend of energy saving and environmental protection of automobiles, and is considered to be the direction of future automobile development. However, limited by the current battery technology and supporting facilities, the current electric vehicles generally have the following shortcomings: [0003] ①Short driving range on a single charge. At present, the energy stored per unit mass of the battery pack is too little. For example, an electric vehicle loaded with a lead-acid battery pack of the same quality as gasoline has a mileage of only 1 / 70 of that of a fuel vehicle. [0004] ②The cost of ca...

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Problems solved by technology

[0003] ①Short mileage on a single charge

At present, the energy stored per unit mass of the battery pack is too little. For example, an electric vehicle loaded with a lead-acid battery pack with the same quality as gasoline has a mileage of only 1 / 70 of that of a fuel vehicle.

[0004] ② High cost of car purchase and maintenance

The high cost of battery packs and motor controllers is the main reason for the high cost of purchasing vehicles. For example, the cost of battery packs in pure electric buses accounts for 1 / 3 of the cost of the entire vehicle, and the maintenance cost of electric vehicles is also high

[0005] ③ Long charging time

The current range-extended electric vehicles all use the traditional internal combustion engine to drive the rotating generator to supply power to the electric vehicle drive system. However, this structural form still has its defects: ① Due to the use of the traditional internal combustion engine, the current problem of low efficiency of the internal combustion engine cannot be overcome

② Unavoidable start-up and other working conditions that require enriched air-fuel mixture, resulting in poor fuel economy

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