Electric control system of parallel oil-electricity hybrid airport fire fighting truck chassis

Abstract

The invention relates to the technical field of fire fighting trucks, in particular to an electric control system of a parallel oil-electricity hybrid airport fire fighting truck chassis. The electriccontrol system comprises the following steps of S1, starting an engine and a driving motor to drive the chassis to run; S2, using the engine for driving the chassis to run, using the driving motor for disconnecting with a chassis transmission system through a clutch, using a power takeoff for driving a water pump to act, wherein the driving motor is electrically connected with a power battery, and executing the step S3; and S3, if the electric quantity SOC of the power battery is larger than an upper limit threshold value, using the engine for driving the chassis, and using a generator for assisting with the power battery in supplying power to the driving motor; if the electric quantity SOC of the power battery is smaller than a lower limit threshold value, using the engine for driving the chassis, and using the generator for charging the power battery and supplying power to the driving motor; and if the electric quantity SOC of the power battery is larger than the lower limit threshold value and smaller than the upper limit threshold value, using the engine for driving the chassis, and using the power battery for assisting with the generator in supplying power to the driving motor. According to the electric control system, the problem that the starting acceleration performance of the engine is poor is solved, it is guaranteed that no engine tail gas is exhausted from the automobile in a garage, and the overall cost is reduced.

Description

technical field [0001] The invention relates to the technical field of fire trucks, in particular to an electric control system for the chassis of a parallel oil-electric hybrid airport fire truck. Background technique [0002] The product is an airport fire truck chassis, which is used for airport fire rescue. At present, a typical airport fire truck chassis has one or two high-horsepower engines. If one engine is used, a power splitter needs to be installed. The engine can simultaneously drive the vehicle and the firefighter. Water pump; with two engines, one of the engines can be used as both a vehicle drive and a fire engine pump. [0003] The engine is limited by its own output characteristics, and its start-up acceleration performance is poor. For an engine drive scheme, the supplier of key assembly resources is relatively single, and the cost remains high, which is not conducive to the development of the industry. Engine emissions affect the environment, and start in ...

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Problems solved by technology

[0003] The engine is limited by its own output characteristics, and its start-up acceleration performance is poor. For an engine drive scheme, the supplier of key assembly resources is relatively single, and the cost remains high, which is not conducive to the development of the industry. Engine emissions affect the environment, and start in the parking garage. Exhaust gas needs to be specially treated, and the vehicle needs to drive to take power, and the vehicle can run at different speeds when the water pump is required to pump water at full power. This power take-off method is difficult to achieve, and it needs to rely on imported components

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