Timing Synchronization Method for Distributed Control System of Micro-ignition Dual-fuel Engine

Abstract

The purpose of the present invention is to provide a timing synchronization method for a distributed control system of a micro-ignition dual-fuel engine, which converts the adjusted rotational speed signal into a differential signal for transmission between controllers, and satisfies the simultaneous use requirements of multiple controllers for timing signals. The differential signal is detected by the differential amplifier at the receiving end, and the differential amplifier only amplifies the difference between the two input signals. Since external interference acts on the two signals at the same time, the differentially transmitted signal can have a strong anti-interference ability against external interference and meet the requirements of the controller for the stability and sensitivity of the timing signal. In the present invention, the conditioned rotational speed signal is transmitted between multiple controllers in the form of a differential signal, and the timing signal processing circuit and the differential signal conversion circuit are designed to meet the technical requirements, which not only reduces the requirement of the distributed control system on the number of rotational speed sensors but also Improved anti-interference and stability of shared signals.

Description

technical field [0001] The invention relates to a dual-fuel engine control method, in particular to a timing synchronization method for a micro-ignition dual-fuel engine control system. Background technique [0002] The engine electronic control system obtains the engine phase information according to the crankshaft and camshaft signals, and triggers the calculation of control parameters such as injection advance angle and injection quantity, thereby controlling the fuel injector or the injection valve drive circuit to perform injection control. Compared with the traditional diesel engine control system, the controller of the natural gas / diesel micro-ignition dual-fuel engine requires more functions. For the natural gas / diesel micro-ignition dual-fuel engine control system, two controllers are designed to work together, and accurate timing signals are required for both natural gas injection control and diesel injection control. [0003] In the current feasible dual-fuel eng...

AI Technical Summary

Problems solved by technology

The problem with this method is that it is not easy to accurately determine the delay time after triggering, and at the same time increases the complexity of the program

Engine timing synchronization has high requirements on the stability of timing signals. In order to prevent signal loss, the signals collected by the sensors will not be used by multiple controllers at the same time. Installing multiple crankshaft and camshaft sensors will increase the cost. put in

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