초록 ▼

In the high pressure exhaust gas duct of a pressure wave supercharger, a rotary valve is supported in the region where the gas pocket supply branches off from the high pressure exhaust gas duct, the angular position of the rotary valve being controlled either in steps or steplessly by one or more pa

In the high pressure exhaust gas duct of a pressure wave supercharger, a rotary valve is supported in the region where the gas pocket supply branches off from the high pressure exhaust gas duct, the angular position of the rotary valve being controlled either in steps or steplessly by one or more parameters typical of the pressure wave process and, if necessary, of the engine working process or the engine operating condition. Depending on the operating condition, the rotary valve closes the high pressure exhaust gas duct and the gas pocket supply duct completely or partially. Control is preferably carried out by a step motor with characteristics control by an in-process computer.

대표청구항 ▼

In a pressure wave supercharger for an internal combustion engine of the type having a device for controlling the high pressure exhaust gas flow, having one or more cycles, gas and air casings and a rotor casing with a cell rotor enclosed between these two casings, main and auxiliary ducts for the s

In a pressure wave supercharger for an internal combustion engine of the type having a device for controlling the high pressure exhaust gas flow, having one or more cycles, gas and air casings and a rotor casing with a cell rotor enclosed between these two casings, main and auxiliary ducts for the supply and removal of high pressure and low pressure exhaust gas and of low pressure and high pressure air being provided in the gas casing and in the air casing, the main ducts consisting of a low pressure air duct and a high pressure air duct in the air casing and of a high pressure exhaust gas duct and a low pressure exhaust gas duct in the gas casing and one of the auxiliary ducts being a gas pocket which is provided on the end surface of the gas casing facing towards the cell rotor, which gas pocket is located behind the high pressure exhaust gas duct, viewed in the direction of rotation of the rotor, and is connected to the high pressure exhaust gas duct via a gas pocket supply duct, the improvement wherein the device for controlling the high pressure exhaust gas flow has a control element which is controllable from a servo motor which can be activated by signal means which respond to parameters typical of the pressure wave process and the engine operating process, and wherein the control element can be adjusted in such a way that it can at least partially shut off both the partial flow through the gas pocket supply duct and the main flow through the high pressure exhaust gas duct.