Hydraulic hybrid system separately driven by wheel hub motors
A hybrid power system and independent wheel technology, applied in hybrid vehicles, power devices, pneumatic power devices, etc., can solve the problems of poor transmission efficiency, complex structure, high failure rate, etc., and achieve reduced installed mass, simple operation, The effect of reducing pollution
Active Publication Date: 2017-11-03
NANJING UNIV OF SCI & TECH
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Problems solved by technology
[0004] The technical problem solved by the present invention is to provide a liquid drive hybrid power system driven by independent wheels, which solves the problems of complex structure, high failure rate and poor transmission efficiency of the existing vehicle liquid drive hybrid power system
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[0020] In order to illustrate the technical scheme and technical purpose of the present invention, the present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.
[0021] to combine figure 1 , a hydraulically driven hybrid power system driven by independent wheels according to the present invention, including an electronic control unit 1, a hub hydraulic motor 2, an engine 3, a first hydraulic accumulator 4, a variable hydraulic pump 5, wheels 6, a first steering Device 7, hydraulic system pipeline;
[0022] The output shaft of the engine 3 is fixedly connected with the mechanical rotation shaft of the variable hydraulic pump 5, and the oil delivery outlet of the variable hydraulic pump 5 is connected in parallel with the first hydraulic accumulator 4 to the oil delivery inlet of the hub hydraulic motor 2; the first The hydraulic accumulator 4 is used to store the hydraulic energy of the power system, recover the...
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The invention discloses a hydraulic hybrid system separately driven by wheel hub motors. The hydraulic hybrid system comprises an electronic control unit (ECU), wheel hub hydraulic motors, an engine, a first hydraulic accumulator, a variable displacement hydraulic pump, wheels, a first steering device, a hydraulic system pipeline and the like, wherein the variable displacement hydraulic pump is fixedly connected with the engine; the oil outlet of the variable displacement hydraulic pump is connected with the first hydraulic accumulator and the wheel hub hydraulic motors through the hydraulic system pipeline; each of the four wheel hub hydraulic motors separately and independently drives the corresponding wheel; the first steering device is connected with the two front wheels or the two rear wheels of a vehicle; a low-pressure pipeline of the hydraulic system pipeline is connected to the oil inlet of the variable displacement hydraulic pump; and the ECU is used for controlling the operation of the engine, vehicle steering, the variable displacement hydraulic pump, the displacement of the wheel hub hydraulic motors and the like. The hydraulic hybrid system separately driven by the wheel hub motors has the advantages of realizing the decoupling of the engine and the driving cycle of the vehicle, improving the operating point of the engine, recovering the braking energy and remarkably improving the economical efficiency of fuels. The four-wheel-hub-motor drive enhances the dynamic performance of the vehicle, increases the minimum ground clearance of a chassis, and improves the off-road performance of the vehicle.
Description
technical field [0001] The invention belongs to the technical field of vehicle hydraulic drive hybrid power, in particular to a hydraulic drive hybrid power system driven by independent wheels. Background technique [0002] Most traditional vehicles use mechanical transmission to drive the wheels. The engine working conditions are closely related to the driving conditions of the vehicle, which cannot well adapt to complex and changeable working conditions, and there is a bottleneck in the improvement of fuel economy. The hydraulically driven hybrid vehicle can realize the decoupling of the engine working condition and the vehicle driving condition, and the hydraulic transmission has the characteristics of high power density and convenient realization of stepless speed regulation, and has been widely valued and studied. [0003] Among the current research at home and abroad, most of the research is to add a power take-off device and a hydraulic pump on the basis of the origin...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60K6/12B60K17/356B60K17/10B60K17/34
CPCB60K6/12B60K17/10B60K17/356B60K17/358Y02T10/62
Inventor 徐照平周海成刘梁何晓辉沈新民钱立新王强张玲玲刘东
Owner NANJING UNIV OF SCI & TECH