Fuel engine servo-loading unit and optimum efficiency operation control method

Abstract

The inventive fuel engine servo loading device includes a motor, a servo-driver and a main control unit, wherein, an outer rotor of the motor is directly connected with output shaft of an engine; an inner rotor is inside of the outer rotor, and the inner rotor shaft is the device output shaft; one of the inner rotor and the outer rotor is inlayed with permanent magnetism, the other is inlayed with windings. A velocity/position sensor on the outer rotor is connected with the main control unit and the servo-driver, a position sensor on the inner rotor is connected with the servo-driver, the main control unit is connected with the servo-driver, the servo-driver is connected with windings, and the main control unit stores the curve date of engine operated with optimum efficiency. The optimum efficiency operation control method of the inventive device is that the velocity/position sensor sends out signals the outer rotor velocity and position in real time; the position sensor sends out the inner rotor position signals in real time; a computer calculate an optimum torque value; the servo-driver dynamically loads inner or outer rotor winding current based on the torque setting value and the relative position of the inner and outer roters, so as to allow the engine to always work at the optimum efficiency curve, thereby outputting maximum mechanical energy at identical oil wear.

Description

(1) Technical field [0001] The invention relates to the technical field of energy saving, in particular to a fuel engine servo loading device and an optimal efficiency operation control method thereof. The servo loading device and the best efficiency operation control method of the fuel engine enable the engine to always work on the best efficiency operation curve at different speeds, so that the engine can obtain the maximum mechanical energy when consuming the same amount of fuel, and achieve the goal of saving energy. Purpose. (2) Background technology [0002] Experiments have shown that there are several operating points with different speed and torque coordination for a certain mechanical power output of a fuel engine. Among these operating points, there is a point with the lowest fuel consumption per unit output mechanical energy, which is the best matching operating point of speed-torque. The curve obtained by connecting and smoothing the lowest points of fuel consu...

AI Technical Summary

Problems solved by technology

However, the CVT also has obvious limitations: one is that the mechanical structure is more complicated, so its manufacturing cost is high; the other is that the inertia of the mechanical structure and hydraulic system is large, so the adjustment speed is slow. When the engine throttle or external load torque changes dynamically, Especially when the road conditions change frequently, the throttle changes frequently, and the speed changes frequently, the continuously variable transmission (CVT) cannot quickly and accurately adjust the ratio, and the probability of the fuel engine working on the best efficiency operating curve is still very low; in addition, the continuously variable transmission The transmission efficiency of gearbox (CVT) is lower than that of general gear transmission

These shortcomings all affect the popularization and application of CVT

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