Engine start control method and control device

Abstract

The invention relates to the technical field of engines, in particular to a control method and a control device for starting an engine. The invention aims to solve the technical problem that the engine starts by mistake due to an interference signal before it starts automatically. For this purpose, the present invention provides a control method for starting an engine. The control method for starting an engine includes the steps of: obtaining the current state of the engine; obtaining a rotational speed signal of the engine according to the current state in which the engine is combined with the starter; controlling the rotational speed signal Perform filtering processing to filter out the speed signal with signal jump in the speed signal; according to the matching of the filtered speed signal and the automatic starting speed signal, control the engine and the starter to go off-line and enter the autonomous running state. The invention performs effective filter processing on the large abnormal jump of the instantaneous rotational speed before the engine starts autonomously, so as to reduce the phenomenon that the engine starts incorrectly due to the disturbance of the rotational speed fluctuation before the engine autonomously starts.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a control method and a control device for starting an engine. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] The engine speed is a very important control parameter in the process of mechanical control. For example, the engine speed plays an important role in power control, engine start, and speed change control. Accurately and quickly collect engine speed signals and minimize interference signals. It is of great significance to further improve the response ability and stability of the control system, but in the process of starting the engine driven by the starter, the engine speed fluctuation is more obvious, and the existing technology does not do any processing on the collected engine speed signal , the engine speed collected by the starter during the starting process ...

AI Technical Summary

Problems solved by technology

[0003] The engine speed is a very important control parameter in the process of mechanical control. For example, the engine speed plays an important role in power control, engine start, and speed change control. Accurately and quickly collect engine speed signals and minimize interference signals. It is of great significance to further improve the response ability and stability of the control system, but in the process of starting the engine driven by the starter, the engine speed fluctuation is more obvious, and the existing technology does not do any processing on the collected engine speed signal , the engine speed collected by the starter during the starting process of the engine is all valid signals, so that when the engine speed with a large jump is collected, it is misjudged as a valid engine speed signal, resulting in when the starter recognizes the wrong engine speed signal, As a real engine speed signal, the engine is processed offline, resulting in that the offline engine cannot start normally because the real speed does not reach the preset speed

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