Patent ID: 7866156
Filing Date: 2011-01-11
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. A method for improving behaviours of accelerating and emissions of a reciprocating-piston internal-combustion engine of compression-ignition configuration with turbo charging, an EGR device, and compressed air injection supplied from a compressed-air accumulator into a fresh-gas pipe section module of a fresh-gas supply pipe, the engine being provided with an adjustable butterfly valve for use in conjunction with the EGR device and the compressed-air injection to control gas injection into the engine, comprising: determining a torque requirement; determining engine characteristic values; determining an air pressure in a section of the fresh-gas pipe between an engine cylinder inlet valve and the butterfly valve; processing the torque requirement, engine characteristic values and air pressure in an electronic control unit to generate output signals for control of the adjustable butterfly valve, a volume control device which controls the compressed air throughflow from the compressed-air accumulator and a control valve which controls an exhaust gas throughflow through the EGR device; and controlling synchronized operation of the adjustable butterfly valve, the volume control device and the control valve of the EGR device based on the output signals from the electronic control unit.