Cylinder firing control method, system and readable storage medium applied to engine

An ignition control and engine technology, applied in automatic control, automatic control, electrical automatic control, etc., can solve the problem of no software strategy optimization scheme, and achieve the effect of avoiding design rework, reducing jitter, and reducing hardware costs

Active Publication Date: 2022-07-22
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the vibration at such extremely low speeds, there is currently no software strategy optimization solution

Method used

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  • Cylinder firing control method, system and readable storage medium applied to engine
  • Cylinder firing control method, system and readable storage medium applied to engine
  • Cylinder firing control method, system and readable storage medium applied to engine

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Experimental program
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Embodiment Construction

[0041] First of all, the starting process of the engine in the prior art is briefly introduced. It is well known to those skilled in the art that the ignition angle of each ignition when the engine starts is determined in advance according to the calibration of the whole vehicle, that is, the first ignition of the whole vehicle is calibrated. The ignition angle is a 1 , the ignition angle of the second ignition is a 2 , and so on, the ignition angle of the i-th ignition is a i . For a three-cylinder engine, there are two ignition sequences of the three cylinders, 1-2-3 and 1-3-2. No matter which ignition sequence is used, the ignition angle during sequential ignition is in accordance with a1 , a 2 ,...,a i are executed in sequence.

[0042] As mentioned in the background art, the existing engine has a problem of jitter when starting at a low speed. Taking a three-cylinder engine as an example, the inventor found after research that the jitter at the start-up stage of the ...

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Abstract

The present invention provides a method, a system and a readable storage medium for the ignition control method, system and readable storage medium applied to an engine. It is characterized in that, the ignition angle offsets when the cylinders are used as the cylinders for the previous several times of ignition are respectively set in advance for the plurality of cylinders, and the ignition angle offsets can advance the ignition angle; the method includes: when starting the When the engine is running, determine whether the engine is in a warm-up starting condition; if so, determine the firing order for starting the plurality of cylinders this time; re-determine the previous firing order according to the firing order and the preset firing angle offset. The ignition angles of the cylinders ignited several times; according to the re-determined ignition angles of the cylinders ignited several times before, the multiple cylinders of the engine are controlled to ignite in sequence according to the ignition sequence. The invention can effectively reduce the vibration of the engine during the starting process.

Description

technical field [0001] The present invention relates to the technical field of engines, and in particular, to a method, a system and a readable storage medium for an ignition control method, system and readable storage medium applied to an engine. Background technique [0002] During the warm-up process of the engine, the whole vehicle will have obvious vibration phenomenon. Taking a three-cylinder engine as an example, due to the structural characteristics of a three-cylinder engine, the interval between two power strokes is 240 degrees, and a power stroke is 180 degrees, so there is a 60-degree compression resistance between the two powers that cannot be balanced, such as figure 1 shown in the gray area. [0003] This unbalanced reciprocating force is particularly evident at low speeds. figure 2 In order to show the speed of the engine at the time of starting, the high-precision sampling of the engine speed is used after the engine is first ignited. It is found that the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02P5/145
CPCF02P5/145
Inventor 黄明杨聪刘晓东
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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