Hydraulic hybrid vehicle flexible braking device

Abstract

The invention relates to a hydraulic hybrid vehicle flexible braking device. A pressure sensor and a pressure sensing energy accumulator are connected in series between a brake pedal and a brake main cylinder of the main structure thereof, the brake pedal acts to cause oil to flow, the flow is diverted to the pressure sensing energy accumulator and enters into the brake main cylinder via a controllable throttle valve, to construct a flexible connection between the brake pedal and the brake main cylinder. An energy accumulator pressure signal subject to signal conversion of the brake pedal of a driver is collected to be sent into a brake controller to be used for controlling the hydraulic regenerative braking and friction braking of the vehicle to work cooperatively, and integrating braking work, brake signal collection and control functions. The pressure sensing energy accumulator can feed vivid brake pedal operating force sense back to the driver. The invention not only has the function of collecting intention signal of the driver to control checking brake, but also has operating sense, the brake signal is sent to the vehicle driving main control unit in the form of electrical signal, thus realizing vehicle brake strategy coordination and energy management control.

Description

technical field [0001] The invention relates to a vehicle brake operation and control technology, in particular to a flexible brake device for hydraulic hybrid vehicles. Background technique [0002] We know that the service brake manipulation of a traditional vehicle is achieved by the driver depressing the brake pedal. The brake pedal is directly connected to the brake master cylinder (hydraulic transmission), brake lever (rod type and cable transmission) or brake control valve (pneumatic or hydraulic power brake). The driver's operation on the brake pedal is directly used to control the (friction) braking force, and the driver adjusts the braking process of the vehicle through the sensory feedback of the vehicle speed. [0003] In recent years, hybrid vehicle technology has become a research and development hotspot for major automobile companies. A hybrid vehicle refers to a vehicle that uses two or more power devices as the driving energy of the vehicle. Often divided...

AI Technical Summary

Problems solved by technology

In terms of function, the brake pedal mechanism (device) of this kind of hydraulic hybrid vehicle existing abroad solves the analysis of the driver's braking intention and the braking execution action, but the action process of the driver stepping on the brake pedal Among them, there is a lack of non-linear brake operating force feedback for conventional vehicle braking, so that the driver cannot get the reaction force of the brake pedal, and it is not convenient for real-time feedback or reaction according to the vehicle working conditions, and the driving operation has a certain sense of abnormality , from the perspective of driving psychology, there are certain hidden dangers

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