System and method for providing hydraulic energy-accumulation hybrid power

Abstract

The invention discloses a system and a method for providing hydraulic energy-accumulation hybrid power. In the system disclosed by the invention, an engine is interacted with a hydraulic pump / motor through a special clutch for engines, and outputs power to a gearbox through an external clutch. In the process of car braking, the engine drives the hydraulic pump / motor to rotate through the special clutch so as to convert the mechanical energy of the hydraulic pump / motor into the pressure energy of a liquid medium, and stores the liquid medium with the power energy into a hydraulic energy accumulator, thereby achieving an effect of energy recovery; and in the process of car starting or accelerating, the liquid medium with the power energy impacts the hydraulic pump / motor to rotate, the hydraulic pump / motor converts the power energy into mechanical energy and outputs the mechanical energy to the engine by the special clutch, and the engine drives a car to go forward through the external clutch, thereby achieving an effect of energy regeneration. The method disclosed by the invention comprises the steps of judging the state of a car according to acquired car information and then carrying out corresponding control on the system, thereby achieving the purpose of energy recovery or regeneration.

Description

technical field [0001] The invention relates to the technical field of hybrid power, in particular to a system and method for providing hydraulic energy storage hybrid power. Background technique [0002] As the number of vehicles in the world increases year by year, the automotive industry is under increasing pressure to save energy and reduce emissions. Various countries are also focusing on the research and development of green and environmentally friendly products in order to take the lead in future competition. Hybrid technology is currently one of the best energy-saving solutions recognized internationally. It aims to improve energy utilization, reduce fuel consumption and reduce harmful gas emissions through the joint work of different power sources and give full play to their respective advantages. [0003] In the prior art, the basic principle of the utility model patent of "bus series hydraulic hybrid power transmission device" is as follows: figure 1 As shown, a...

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Problems solved by technology

[0004] In the traditional powertrain, the engine is used to output power to the vehicle through the clutch, but in the patent of this utility model, the hydraulic pump / motor in the hydrostatic transmission system is used to output power to the vehicle through the clutch through the secondary adjustment, which requires the traditional vehicle Power systems such as clutches, gearboxes, etc. undergo a thorough change, that is, a new design, which is not conducive to the transformation of new cars and old cars, and cannot borrow traditional production lines

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