Engine management system and vehicle

Abstract

The invention provides an engine management system and a vehicle. The system comprises a master control chip. The master control chip comprises a co-processor and a main processor. The co-processor comprises a camshaft signal processing module, a camshaft position calculation module and a crankshaft signal processing module, wherein the camshaft signal processing module is used for obtaining a camshaft signal and counting the number of teeth of a camshaft, the camshaft position calculation module is used for determining the position and the rotating speed of the camshaft, and the crankshaft signal processing module is used for processing a crankshaft signal according to a preset crankshaft state to determine missed teeth and segment time of the crankshaft. The main processor comprises an engine synchronizing module, an engine rotating speed calculation module and an engine acceleration calculation module, wherein the engine synchronizing module is used for synchronizing the position of the camshaft, the missed teeth of the crankshaft and the segment time of the crankshaft, and the engine rotating speed calculation module and the engine acceleration calculation module are used for calculating the rotating speed and the rotating speed acceleration of an engine according to the position of the camshaft, the rotating speed of the camshaft, the missed teeth of the crankshaft and the segment time of the crankshaft. By means of the system, resources of a CPU can be saved, the real-time performance of crankshaft signal processing can be further achieved, and therefore a control strategy can more efficiently and more accurately run.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an engine management system and a vehicle. Background technique [0002] The engine is a nonlinear and unstable complex system. The performance of the engine depends largely on the perfection of the regulation control system, and this regulation control is a complex multi-element dynamic process. Therefore, the electronic control technology of the engine has become the most powerful means to improve the overall performance of the engine. It can better implement people's control ideas on the working process of the engine, and accurately adjust the control parameters of the engine system to keep its overall performance always comprehensively optimized. Engine position management plays a decisive role in engine operation and is the basis for other parts of the engine to work. If the engine position is out of position, the engine will not run normally. The timing of the engine ...

AI Technical Summary

Problems solved by technology

[0004] Moreover, the current control strategy generally has the following disadvantages: the control strategy of the engine position management algorithm (Epm) is relatively complicated, and CPU resources are occupied in the process of crankshaft and camshaft signal processing, and the processing of these crankshaft signals requires a lot of The real-time performance is relatively high, and the main control chip of the core ECU of the control system generally adopts an 8-bit or 16-bit single-chip microcomputer, and the program runs relatively slowly, so the design of the Epm control strategy is too complicated, which makes the crankshaft and camshaft signal processing not timely, so that the engine position If it is not obtained in time, it will eventually lead to inaccurate fuel injection and ignition signals, poor real-time performance, and unstable operation of the entire engine controller

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