Intelligent power distribution system of internal combustion engine

Abstract

The invention provides an intelligent power distribution system of an internal combustion engine, comprising an engine demand torque calculating module, a single cylinder best working ability evaluating module, an engine working mode confirming module, a cylinder deactivation order confirming module, an idle cylinder control module, a working cylinder control module, and an engine control parameter adjusting module. The engine demand torque calculating module calculates the running torque value required by the engine; the single cylinder best working ability evaluating module calculates the idle cylinder number under the current working condition, thus the working ability of the working cylinder is under the best state; the idle cylinder control module controls air inlet and exhaust actions of the idle cylinder, thus the negative work of the idle cylinder is minimum; the working cylinder control module amends the oil spray amount and air inlet amount of the working cylinder, thus the vibration and noise of the engine are minimum. According to the engine running working condition, the working mode of the engine is determined, thus the engine is worked at the most economic working zone, and thereby reaching the purpose of saving energy and reducing emission.

Description

technical field [0001] The invention relates to an intelligent power distribution system of an internal combustion engine, and relates to the technical field of energy saving and emission reduction of diesel engines. Background technique [0002] Chinese patent CN101858259B provides a control method for partially stopping cylinders of diesel engines to save fuel. The technical means and effect achieved in this patent are: a cylinder deactivation controller is installed outside the engine electronic control unit, and the cylinder deactivation controller obtains engine and vehicle information from the engine electronic control unit through the CAN bus, and automatically identifies the vehicle status. Carry out partial cylinder deactivation fuel-saving control according to needs; pre-store the three-dimensional MAP map of the cylinder deactivation area corresponding to the speed, throttle, and torque in the cylinder deactivation controller. In this mode, half of the cylinders ...

AI Technical Summary

Problems solved by technology

The shortcoming and reason of this patent is: when choosing to stop the cylinder, only the factors of torsional vibration and vibration are considered, and the influence of the working time and wear of the cylinder on the uniformity of work is not considered.

[0005] Generally speaking, when the engine is under low load, some cylinders are selected to stop working. The existing technology does not provide how to evaluate the engine in a low-load state through specific quantitative indicators in real time in the engine control system, nor does it provide information about the working cylinders. The control method of the influence of time, wear, etc. on the working performance of the working cylinder, and the control method of the working uniformity of the working cylinder when part of the cylinder is stopped

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