Method for controlling auxiliary compressorof drive device and control device

Abstract

The present invention relates to a method for controlling an auxiliary compressor of a drive device having an internal combustion engine, compression components and the auxiliary compressor, wherein the compression components are adapted to generate a basic boost pressure, and the auxiliary compressor is designed for generating an auxiliary boost pressure for the internal combustion engine. The method includes determining a rated torque; obtaining a variable expressing a basic torque according to the rated torque, wherein the internal combustion engine generates the basic torque in response to the basic boost pressure generated; determining in dependence of the variable expressing the basic torque, whether the basic torque is smaller than the rated torque, obtaining a variable expressing an auxiliary torque according to the rated torque and the variable expressing the basic torque when the basic torque is smaller than the rated torque, wherein the internal combustion engine generates the auxiliary torque in response to the auxiliary boost pressure; when the basic torque is less than the rated torque, controlling the auxiliary compressor according to the variable expressing the auxiliary torque so as to enable the internal combustion engine to provide a total internal combustion engine torque in which the auxiliary torque is improved.

Description

technical field [0001] The invention relates to a method and a control device for controlling an auxiliary compressor of a vehicle drive comprising an internal combustion engine, one or more compression assemblies provided in addition to the auxiliary compressor , and an auxiliary compressor, wherein the compression assembly is designed to generate a primary boost pressure for the internal combustion engine, and wherein the auxiliary compressor is designed to generate an auxiliary boost pressure for the internal combustion engine. Background technique [0002] Internal combustion engines are typically configured to provide torque to drive, for example, a vehicle. The torque can also be adjusted via the boost pressure of the air supplied by the internal combustion engine. In order to regulate the charge pressure, for example, throttle valves, exhaust gas turbochargers, waste gas recuperation valves and bypass valves can be provided in the intake tract of the compression unit...

AI Technical Summary

Problems solved by technology

However, an undesired delay occurs between the engagement of the compression components and the adjustment of the boost pressure, which leads to functional impairments especially when the load changes, for example when the vehicle accelerates

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