Permanent-magnet eddy current retarder for vehicle

Abstract

A kind of permanent-magnet eddy current retarder for vehicles relates to the improvement of a kind of vehicle assistant brake equipment. It concludes left rotor dish, right rotor dish, splined shaft, stator support and magnistor components. The magnistor component conclude neodymium iron boron permanent-magnet, magnetic permeable jar, cylinder, magnetic permeable ring, magnetic permeable plank, kineto-magnetic permeable ring and piston ring; the stator support is positioned between the left rotor dish and right rotor dish and is homocentric mounted with them. The magnistor components are arranged in the stator support along circumference. The neodymium iron boron permanent-magnet is in the interior center of magnetic permeable jar. The cylinder is arranged between magnetic permeable jar and neodymium iron boron permanent-magnet. The magnetic permeable plank is arranged at outer side end face of the neodymium iron boron permanent-magnet. The magnetic permeable ring is arranged at the end face of the magnetic permeable jar. The piston ring pushes kineto-magnetic permeable ring to move in the cylinder.

Description

technical field [0001] The invention is an auxiliary braking device for decelerating automobiles through the reverse eddy current braking force generated in a rotating and non-contact rotor disk by using NdFeB permanent magnets as a braking force source, and relates to an auxiliary braking system for automobiles. Improvement of the moving device. Background technique [0002] With the rapid development of expressways and the improvement of road quality, the proportion of automobiles in transportation is constantly increasing. Future expressway traffic will be dominated by heavy-duty special vehicles and high-speed passenger vehicles. This requires the automobile industry to produce more vehicles suitable for highway and urban operation, these vehicles must not only have the characteristics of high power and high comfort, but also especially have extremely high safety. Therefore, the auxiliary braking system came into being to consume part of the driving kinetic energy befo...

AI Technical Summary

Problems solved by technology

The structure of the hydraulic retarder is complex, the low-speed braking effect is poor, and the action response time is long; the eddy current retarder is equipped with a large number of electromagnetic coils and magnetic cores, so it has a large mass and consumes a large amount of current during braking. The coil has high heat generation and high energy consumption. The temperature rise of the main engine during operation causes the braking torque to attenuate seriously with the temperature rise.

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