Series-parallel combined hydraulic power system of hybrid electric vehicle

A technology for hybrid electric vehicles and power systems, applied in fluid hybrid electric vehicles, hybrid electric vehicles, pneumatic power devices, etc., can solve the problem that the electric vehicle system cannot take care of both series and parallel systems, and achieve the goal of low fuel consumption and easy Realize the effect of low emission

Inactive Publication Date: 2012-06-27
HARBIN INST OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing power vehicle system cannot take in...

Method used

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  • Series-parallel combined hydraulic power system of hybrid electric vehicle
  • Series-parallel combined hydraulic power system of hybrid electric vehicle

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specific Embodiment approach 1

[0010] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the hybrid hydraulic vehicle power system described in this embodiment includes an engine 1, a first one-way clutch 2, a power splitter 3, a splitter pump 4, a second one-way clutch 5, and a coupler 6. Drive axle 7, hydraulic accumulator 8 and hydraulic pump / motor 9,

[0011] The engine 1 is connected to the torque input end of the power splitter 3 through the first one-way clutch 2, the first torque output end of the power splitter 3 is connected to the torque input end of the splitter pump 4, and the oil outlet of the splitter pump 4 is connected to the hydraulic energy storage The oil inlet of the hydraulic accumulator 8 is connected, the energy storage input and output oil port of the hydraulic accumulator 8 is connected with the oil port of the hydraulic pump / motor 9, and the torque output end of the hydraulic pump / motor 9 is connected with the first torque input of the c...

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Abstract

The invention discloses a series-parallel combined hydraulic power system of a hybrid electric vehicle, which belongs to the field of hydraulic hybrid vehicles and aims to solve the problem that advantages of series connection and advantages of parallel connection cannot be integrated in an existing hybrid vehicle system. The series-parallel combined hydraulic power system comprises an engine, a first one-way clutch, a power flow distributor, a flow distributing pump, a second one-way clutch, a coupler, a driving axle, a hydraulic energy accumulator and a hydraulic pump/motor, the engine is connected with a torque input end of the power flow distributor by the first one-way clutch, a first torque output end of the power flow distributor is connected with a torque input end of the flow distributing pump, an oil outlet of the flow distributing pump is communicated with an oil inlet of the hydraulic energy accumulator, an energy accumulation input and output oil outlet of the hydraulic energy accumulator is communicated with an oil port of the hydraulic pump/motor, a torque output end of the hydraulic pump/motor is connected with a first torque input end of the coupler, a second torque output end of the power flow distributor is connected with a second torque input end of the coupler by the second one-way clutch, and a torque output end of the coupler is connected with a torque input end of the driving axle.

Description

technical field [0001] The invention relates to a power system of a hybrid hydraulic hybrid vehicle and belongs to the field of hydraulic power vehicles. Background technique [0002] Hydraulic energy-storage hybrid electric vehicle (hereinafter referred to as hydraulic hybrid electric vehicle) is a hybrid electric vehicle that applies secondary hydrostatic adjustment technology to the auxiliary drive of the vehicle, and its auxiliary power device is composed of a hydraulic drive system, including energy conversion components—— Hydraulic pumps / motors and energy storage elements - hydraulic accumulators. The working principle is similar to that of a hybrid electric vehicle. During the operation of the vehicle, the hydraulic pump / motor can be used alone or simultaneously with the traditional internal combustion engine to drive the vehicle; when the vehicle brakes and decelerates, the hydraulic pump is used to convert the kinetic energy of the vehicle into hydraulic energy, wh...

Claims

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Application Information

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IPC IPC(8): B60K6/12
CPCY02T10/6208Y02T10/62
Inventor 姜继海张健罗念宁
Owner HARBIN INST OF TECH
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