Method and device for adjusting actuator running parameter

Abstract

The invention provides a method and a device for adjusting an actuator running parameter. The method comprises the following steps of, when the current running index of an engine meets a cylinder deactivation condition, determining the quantity of first target air cylinders; according to the quantity of the first target air cylinders, calculating the load rate of each second target air cylinder, wherein the first target air cylinders are air cylinders needing to stop working, and the sum of the quantity of the second target air cylinders and the quantity of the first target air cylinders is the quantity of total air cylinders of the engine; and adjusting a preset running parameter according to the load rate of each second target air cylinder and the revolution speed of the engine. Evidently, if the current running index of the engine meets the cylinder deactivation condition, the load rate of each second target air cylinder is calculated; according to the load rate of each second target air cylinder and the revolution speed of the engine, the preset actuator running parameter of an actuator is adjusted rather than the continuing running according to the preset actuator running parameter is performed; and therefore, an exhaust gas temperature is raised, to realize decreasing the emission load of tail gas.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method and device for adjusting operating parameters of an actuator. Background technique [0002] When the engine is running under low-load conditions, the exhaust temperature is low, resulting in low conversion efficiency of post-treatment, resulting in large exhaust emissions, which does not meet the demand for low exhaust emissions, and the engine cylinder cut-off technology is an effective The technology of improving the exhaust temperature of the engine can control some cylinders of the engine to stop working when the engine is running under low load conditions, and provide all the required power by the remaining cylinders, so that the working load rate of the remaining cylinders increases, thereby improving engine exhaust. temperature to reduce exhaust emissions. [0003] In the prior art, after the cylinder is cut off under low load conditions, the actuator of the eng...

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Problems solved by technology

[0002] When the engine is running under low-load conditions, the exhaust temperature is low, resulting in low conversion efficiency of post-treatment, resulting in large exhaust emissions, which does not meet the demand for low exhaust emissions, and the engine cylinder cut-off technology is an effective The technology of improving the exhaust temperature of the engine can control some cylinders of the engine to stop working when the engine is running under low load conditions, and provide all the required power by the remaining cylinders, so that the working load rate of the remaining cylinders increases, thereby improving engine exhaust. temperature to reduce exhaust emissions

[0003] In the prior art, after the cylinder is cut off under low load conditions, the actuator of the engine uses the rail pressure, advance angle, exhaust gas recirculation (Exhaust Gas Re-circulation, EGR) setting value, supercharger The operating parameters of the actuator such as the set value MAP are running, resulting in a large amount of exhaust gas emission and poor exhaust emission effect

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