Method and system for controlling multi-cylinder internal combustion engine

Abstract

A control method for a multi-cylinder internal-combustion engine is as follows: delivering the instant value captured by the control parameter of at least one sensor device at the pluralities of branch moments during the engine rotating period to the control unit of the internal-combustion engine; so that the method sets the time during the burning circulated period for each cylinder and controls the implementation for the operating incident; providing the captured parameter signal to the node formed with the standard communication bus and at least one coder interface module to make the signal contained in the data message; the data message is transmitted to the other node of the bus network; the other node bus network is related to the cylinder control unit to form the interface module; the compensating data is contained in the data message to calculate the interface module for each controller module interface to receive the estimated value of the control parameter in each interval among the subsequence data messages, which makes up the difference for the real-time message delivery caused by the standard communication bus; the calculation is processed by the value of the control parameter and the compensating data.

Description

technical field [0001] The present invention relates to a control method and system for a multi-cylinder internal combustion engine, in particular, a multi-cylinder marine diesel engine used as a propeller on a ship. [0002] More specifically, the present invention is directed to the execution of electronically controlled operating events during each combustion cycle of each cylinder of a multi-cylinder internal combustion engine in response to a control parameter that varies with time during each revolution of the engine. In general, but not exhaustively, the operational events whose execution is timedly controlled during each combustion cycle may include examples of fuel injection, ignition, actuation of intake and exhaust valves, and supply of lubricant and compressed air to cylinders. [0003] The control parameter is typically the instantaneous angular position of the crankshaft as captured by at least one sensor arrangement at a plurality of discrete sensing points regu...

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Problems solved by technology

However, none of these prior art publications include any type of information related to the critical electronic control of the combustion process in the cylinders of a multi-cylinder engine

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