Motorcycle DC speed-governing igniter

Abstract

A speed limiting igniter of a motorcycle introduces a microprocessor and an advanced control algorithm on the basis of the prior motorcycle igniter, which makes an engine work in an optimal condition. Centering on P89LPC901 microprocessor, a contactless digital igniter has the characteristics of simple circuit, single input and single output, power-on reset and no external clock circuit. Because of the direct current supply, the initial ignition speed of the invention is faster than that of an alternating igniter, which stabilifies the ignition voltage better. The principle is that a trigger signal generated by cutting a trigger loop with a magneto cam is transformed into an input signal. After being identified by the microprocessor, the input signal is transformed into the reference point signal of a speed and ignition signal. Compared with the predefined speed limit value, the optimal ignition moment can be obtained through fuzzy and intelligent control. The microprocessor controls an ignition circuit; consequently the ignition point can be controlled accurately. Compared with other igniters, the invention has the advantages of simple structure, low cost, accurate ignition point, high performance of the engine and accurate speed limit range.

Description

technical field [0001] The invention is a high-precision intelligent motorcycle igniter, especially a direct-current type igniter, which relates to the improvement of motorcycle speed limiting device and emission. Background technique [0002] With the development of the economy, the number of vehicles has increased sharply, resulting in more and more crowded traffic and increasing traffic accidents, especially the high-speed motorcycle accidents. It is expected that the speed limit of motorcycles will be put on the agenda soon. Compared with the motorcycle market in Europe and the United States, the safety performance requirements for motorcycles and their accessories are higher, and it is almost universally required to install speed limiting functions. Limiting the maximum speed of a vehicle within an appropriate range is of great significance for reducing traffic accidents and protecting the engine. The realization of the existing motorcycle speed limit function generall...

AI Technical Summary

Problems solved by technology

Among them, methods ①, ②, and ③ will directly affect the dynamic performance of the motorcycle, causing engine overheating and other phenomena; method ④ will not directly affect the dynamic performance of the motorcycle, but the error of controlling the vehicle speed is large, and it is easy to be changed by the user to lose the limit. speed function

[0003] In addition, the AC igniter is powered by the charging winding of the magneto, and the voltage level is determined by the engine speed, which has fluctuations. When the engine speed is lower than 320r / min, it basically does not ignite, and the ignition spark intensity varies greatly due to different speeds.

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