Stepless Pressure Regulation Method for Turbocharger Actuator

Abstract

The invention relates to the technical field of turbochargers, and discloses a stepless pressure regulation method for a turbocharger actuator, comprising the following steps: S1. Obtaining the distance L from the mounting positioning surface of the actuator to the casing connection hole, the casing connection hole The distance L1 to the end face of the actuator, the distance L2 from the installation positioning surface of the actuator to the end face of the push rod end; S2. Obtain the relationship between the pressure and stroke of the actuator when it is theoretically working Y=aX+b; S3. Obtain the opening pressure value B of the actuator assembly; S4. Use the formula L3=L1+L2‑L+(B‑b) / a‑1 to obtain the value of the length L3 of the pre-regulated actuator assembly, and adjust it to the length of L3; S5. The detection system sends the actuator assembly separately Input the pressure value B and another pressure value (B+aN), detect the stroke of the push rod and record the corresponding pressure stroke value, and calculate the elastic coefficient of the actuator; S6. Set the supercharger to allow the actuator push rod to be between 1mm and ( 1+N) Two pressure judgment ranges and elastic coefficient ranges for mm stroke, compare the elastic coefficient of S5 with it, if it exceeds the range, get a corrected angle value of the actuator push rod based on the elastic coefficient of S5.

Description

technical field [0001] The invention belongs to the technical field of turbochargers, and in particular relates to a stepless pressure regulation method of a turbocharger actuator. Background technique [0002] The turbocharger turbine uses the energy of the combustion gas to drive the compressor to compress the intake air density to increase the intake air density, so that the internal combustion engine can achieve higher combustion efficiency and achieve more work output. [0003] During the working process of the internal combustion engine, the combustion conditions will be adjusted and changed from time to time according to the output demand. The internal combustion engine control unit ECU will automatically calculate and output control commands to the turbocharger actuator, and the actuator directly controls the opening of the bleed valve, thereby controlling the working speed of the turbocharger. Pneumatic actuators actually work through internal compression springs, ...

AI Technical Summary

Problems solved by technology

[0005] Due to the connection between the bushing and the transmission pin, the installation of the bushing has limitations. The bushing can only be rotated by an integer multiple of 180° to adjust the opening of the bleed valve, which results in the consequence of the pressure regulation value being an interval value. , it is not possible to realize the stepless pressure regulation of the actuator to precisely control the opening pressure

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