Turbocharging control method and system, and engine

A control method and turbocharging technology, which is applied to engine components, combustion engines, machines/engines, etc., can solve the problems of ineffective control of turbocharger hysteresis, poor control accuracy of pneumatic actuators, and slow response speed of control systems, etc. problems, to achieve the effect of saving air pipes and valve bodies, improving production efficiency and avoiding excessive length

Inactive Publication Date: 2018-06-15
苏州意驱动汽车科技有限公司
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Problems solved by technology

[0004] The entire process of driving the turbocharger is lengthy, which makes the response of the control system slow and can

Method used

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  • Turbocharging control method and system, and engine
  • Turbocharging control method and system, and engine
  • Turbocharging control method and system, and engine

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Embodiment Construction

[0043] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described The embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0044] figure 1 Is the first flow chart of the control method of a turbocharger control system of the present invention, figure 2 Is the second flow chart of the control method of a turbocharger control system of the present invention, see figure 1 with figure 2 The illustrated embodiment shows that the control method of the turbocharger control system ...

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Abstract

The invention discloses a turbocharging control method and system, and an engine. The control method comprises the steps that the rotating speed of the engine and the position signal of an acceleratorpedal are read, and the change rate of the position signal of the accelerator pedal is calculated according to the position signal of the accelerator pedal; if the change rate of the position signalof the accelerator pedal is greater than a signal threshold value or the change rate of the rotating speed of the engine is greater than a rotating speed threshold value, a turbocharger goes into theinstantaneous condition; the turbocharger goes into the steady-state condition if the change rate of the position signal of the accelerator pedal is less than the signal threshold value or the changerate of the rotating speed of the engine is less than the rotating speed threshold value; if the turbocharger is under the steady-state condition, an engine management unit reads a demand signal and calculates the supercharge pressure; under the condition of determining the supercharge pressure ratio, the working point of the turbocharger is changed thorough an electronic actuator; if the turbocharger is under the instantaneous condition, the engine management unit reads the demand signal and calculates the supercharge pressure; under the condition of determining the supercharge pressure ratio, closed-loop control is conducted through the electronic actuator to improve the turbocharging efficiency. Through the turbocharging control method, the control precision and the response efficiencycan be improved.

Description

Technical field [0001] The present invention relates to the technical field of turbines, in particular to a turbocharger control method and control system, and an engine. Background technique [0002] In the prior art, the turbocharger control system mainly includes a mainstream bypass valve turbocharger control system and a variable geometry turbocharger control system. The main difference between the two is that the bypass waste valve is replaced by a variable nozzle nozzle ring. . [0003] But both of them adjust the gas pressure of the pneumatic actuator through the boost pressure limit valve and the engine management unit, so that the pneumatic actuator drives the wastegate valve or the variable nozzle ring to change the position, and controls the flow and angle of the exhaust gas entering the turbine. The final control boost pressure is the target boost pressure; [0004] The entire process of driving the turbocharger is lengthy, which makes the control system response slow a...

Claims

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Application Information

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IPC IPC(8): F02B37/24F02B37/18F01D17/24F01D17/14
CPCF01D17/14F01D17/24F02B37/18F02B37/186F02B37/24Y02T10/12
Inventor 张玉龙赵国柱蒋元广李金良
Owner 苏州意驱动汽车科技有限公司
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