Self-adaptive cylinder deactivation control technology for electronic fuel injection engine

Abstract

This invention provides a self-adaptive cylinder deactivation control technology for an electronic fuel injection engine, which comprises an engine cylinder deactivation detecting and controlling method and an engine oil injection control device; the engine cylinder deactivation detecting and controlling method provided by this invention is only used for detecting and controlling the rotating speed of an engine; in a cylinder deactivation procedure, a final cylinder deactivation probability of an engine is adjusted and determined automatically according to a rotating speed dropping condition of the engine; the cylinder deactivation procedure is exited timely on conditions of a speed-changed vehicle and changed load; the engine is returned to a normal working state so as to avoid the cylinder deactivation influencing power output of the engine; the engine oil injection control device extracts oil injection voltage pulses from oil injection current pulses so as to count the rotating speed of the engine; and an environment temperature is referenced so as to execute the cylinder deactivation procedure of the engine with a detecting and controlling method disclosed by this invention. The technology disclosed by this invention simplifies monitor parameters and a cylinder deactivation mode of the cylinder deactivation and has economy and practicability.

Description

technical field [0001] The invention relates to a fuel injection control technology of an electronic fuel injection internal combustion engine, which is used in the field of cylinder deactivation and fuel saving of the electronic fuel injection engine. Background technique [0002] The electronic injection internal combustion engine is determined by the working principle. Under the light load condition, the combustion heat conversion efficiency is low, and the specific fuel consumption and emission indicators are high. Under heavy load conditions, the combustion heat conversion efficiency is high, and the specific fuel consumption and emission indicators are also reduced. In the case that the engine power output is sufficient under the light load condition, cut off the oil supply to some cylinders of the multi-cylinder engine, let it stop working, and increase the load rate of other cylinders to meet and adapt to the external load requirements of the engine. This is the cyli...

AI Technical Summary

Problems solved by technology

But up to now, there is no existing closed-cylinder fuel-saving technology that has been successfully used in the practical application of automotive EFI engines.

Tracing it to its cause, they more or less have the following defects: either need to carry out a certain scale of transformation to the mechanical part of the car, and the pay of this transformation has lost economic significance compared with the benefit of saving fuel; Valve opening, engine speed, engine temperature, vehicle speed and other parameters require cumbersome modifications to the electrical parts of the car, and the control mode is also more complicated. When the cylinder is stopped, it may affect the power of the vehicle, which also loses its practical value.

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