Fuel injection control method and system for four-stroke electronic-control single cylinder diesel

A technology of fuel injection and control method, which is applied in fuel injection control, electrical control, engine control and other directions to achieve cost-saving effect

Active Publication Date: 2011-07-20
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the special structure of the single-cylinder engine, its control method is relatively simple, so it is possible to simplify the control system on the

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  • Fuel injection control method and system for four-stroke electronic-control single cylinder diesel
  • Fuel injection control method and system for four-stroke electronic-control single cylinder diesel
  • Fuel injection control method and system for four-stroke electronic-control single cylinder diesel

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Such as figure 1 As shown, the four-stroke electronically controlled single-cylinder diesel engine fuel injection control system of the present invention is functionally divided into three parts, including signal transmission, control processing and command execution. The signal transmission is completed by various sensors in the engine 10, and these sensors must include the crankshaft position sensor 11 1 , and may include a water temperature sensor 11 2 , intake air pressure sensor 11 n etc., but must not include the camshaft position sensor. Each sensor 11 1 、11 2 ... 11 n Signals 12 representing the corresponding state of the engine are respectively issued 1 、12 2 ... 12 n .

[0032]The control processing of the signal depends on an engine management module 20 preset in the locomotive processor to complete. The engine management ...

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Abstract

The invention relates to a fuel injection control method and system for a four-stroke electronic-control single cylinder diesel. The method provided by the invention comprises the steps of: controlling an injection solenoid valve to complete an injection action by each top dead center, dynamically calculating to obtain the correction factors of two adjacent top dead centers by means of a crankshaft rotation speed in a certain rotation speed interval, and setting the correction factor of a certain top dead center to be zero after a certain condition is satisfied, that is to say, invalidating the injection corresponding to the top dead center. In the invention, the four-stroke electronic-control single cylinder diesel can achieve the same performance with that of an engine additionally provided with a camshaft position sensor, without the adoption of the camshaft position sensor, and thus, the cost is saved on the premise of not decreasing the performance of the engine.

Description

technical field [0001] The invention relates to an electronically controlled diesel engine control method and system, in particular to a four-stroke single-cylinder diesel engine fuel injection control method and system. Background technique [0002] As an important component system of the engine, the fuel injection system of the diesel engine is one of the key factors affecting the performance of the engine. Faced with the demand for improved engine performance, the fuel injection system has also undergone a technical upgrade from mechanical control to electronic control. Although current multi-cylinder diesel engines have basically adopted electronic control (hereinafter referred to as electronic control) fuel injection systems, a large number of single-cylinder diesel engines still use mechanically controlled fuel injection systems. The upgrade of fuel injection system of single cylinder diesel engine is of great significance to further reduce fuel consumption and pollut...

Claims

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Application Information

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IPC IPC(8): F02D41/40F02D41/04
Inventor 张科勋杨福源欧阳明高李中郝守刚李进
Owner TSINGHUA UNIV
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