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Method and arrangement for controlling knock

A detonation control device and detonation technology, applied in the direction of electrical control, measuring device, automatic control, etc.

Active Publication Date: 2014-11-26
WARTSILA FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the current control system works at least satisfactorily, the response characteristics of the system are expected to be faster and more precise

Method used

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  • Method and arrangement for controlling knock
  • Method and arrangement for controlling knock
  • Method and arrangement for controlling knock

Examples

Experimental program
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Embodiment Construction

[0014] figure 1 The embodiment of the present invention is illustrated. The knock control device includes a control unit 1 arranged to form a knock control command 2 to the regulating unit, and the control unit 1 can be connected to a cylinder specific sensor 3. The device further includes: a classification unit 4, which is used to classify the measurement data from the sensor 3 into a calibration value; and a sliding window memory 5, which is used to maintain the calibration value for a period of time. The sliding window memory is divided into a processing area 31 and a history area 32 ( image 3 Shown in). The device further comprises a knock detection unit 6 which is arranged to detect light knock and heavy knock based on the calibration values ​​in the processing area 31 and also in the history area 32. The control unit 1 is arranged to use light knock detection in the processing area in order to form a knock control command. In this example, the knock detection unit is a...

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PUM

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Abstract

(57) Abstract The idea of the invention is that a knock control (6) works together with another control entity that is called as safety control (8). In order that cooperation between these units runs efficiently they are constructed in an inventive way. The safety unit (8) provides safety control commands fast in cases where the response of the knock control (6) does not influence to the conditions of the cylinder / s in a desired way. In other words, the invention provides a new arrangement for handling the knocking with fast response characteristics.

Description

Technical field [0001] The invention relates to a method and device for controlling knock of an internal combustion engine. Specifically, the present invention relates to an internal combustion engine using gasoline as a fuel, or an engine capable of using gasoline and another fuel type(s) as fuel. For example, other fuel types are light fuel oil or heavy fuel oil. Background technique [0002] Today, internal combustion engines are electrically controlled. In this way, good driving performance of the engine is possible, and the engine can be operated at an optimal level with good efficiency and low emissions. Running in the optimal level can result in auto-ignition of combustion, which can produce knocking. Knock creates additional stress on the cylinder. [0003] The knocking phenomenon can be divided into light knocking and heavy knocking. These names indicate that the division is based on the magnitude of knock. Heavy knock is a situation where normal knock control cannot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D35/02F02P5/15
CPCY02T10/44F02D41/403F02D35/027Y02T10/40F02P5/152G01L23/221
Inventor J·安德森P·弗尔斯D·尼伦德
Owner WARTSILA FINLAND OY