Active intrusive retarding system

Abstract

The invention discloses an active intrusive retarding system which comprises a microswitch I, a microswitch II, a manual control mechanism, a time-delay relay, an electric control air valve, an air reservoir, an air chamber, a hydraulic machine, an energy converter, an air storage cylinder, a heat exchanger, a pneumatic motor, an electric power storage device and a hydraulic motor I, wherein the microswitch I is driven by a brake pedal, and the microswitch II is driven by an accelerator pedal; the microswitch I enables a clutch of the hydraulic machine to be meshed by the time-delay relay, and the microswitch II enables the clutch of the hydraulic machine to be disengaged by the time-delay relay; when the brake pedal is pedaled, the clutch on the hydraulic machine is meshed so as to increase the load driven by a transmission shaft of a vehicle, thereby achieving the purpose of rapid deceleration; when the brake pedal does not work, the clutch on the hydraulic machine is disengaged, and an engine has no power consumption; when the accelerator pedal is pedaled, the clutch on the hydraulic machine is loosened, and the energy converted by the energy converter is used for supplying power for a travel system of the vehicle by the hydraulic motor, the pneumatic motor and the engine; and when the accelerator pedal is in a static state, the purpose of parking can be achieved by pullingdown a handle of a hand control valve.

Description

technical field [0001] The invention relates to a vehicle auxiliary retarding braking technology, in particular to an active intervention retarding system. Background technique [0002] The braking system can be divided into service braking system, parking braking system, emergency braking system and auxiliary braking system. There are usually three indicators to measure the braking ability of a vehicle: one is the braking efficiency, that is, the ability to brake within a short distance (commonly known as the shortest braking distance); the other is the braking stability, that is, the control of the vehicle body direction during braking The third is thermal decay (also called braking stability), that is, the ability to maintain braking torque under high temperature conditions after long-term braking. According to measurements, under the rated load of a general truck, the temperature of the brake drum can reach about 700°C after going up and down the slope of 7% for 3 minut...

AI Technical Summary

Problems solved by technology

Hydraulic retarder does not generate braking torque when the working chamber is not filled with working fluid, but because the driving wheel is connected with the transmission system of the vehicle, the driving wheel is always rotating, and the fixed wheel and the moving wheel drive the air in the working chamber to generate circulation Flow, causing a certain energy loss, the loss is called blast loss, in which the idling of the hydraulic retarder consumes about 4% of the power transmitted by the engine, and the idling of the eddy current retarder consumes about 1%.

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