Wilhelm Polach | Researchain

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SAE International Congress and Exposition | 1989

Fuel Injection Equipment for Heavy Duty Diesel Engines for U. S. 1991/1994 Emission Limits

Gerhard Stumpp; Wilhelm Polach; N. Muller; J. Warga

The particulate emissions can be reduced by increasing injection pressure. The NO/sub chi/ -emission can be lower to the required amount with a retarded injection-begin. These measures raise fuel consumption by approximately 8 - 10%. To avoid blue smoke from the cold engine, it is advantageous that the fuel injection is advanced during the warm-up period. These statements apply for injection systems with unit injectors as well as for pump-line-nozzle-systems. In this paper, the pump-line-nozzle-system will be described. With this system, injection pressures of 1200 to 1400 bar at the injection nozzle are reached. The injection-begin can be changed with a control-sleeve in-line pump. The injection-begin and fuel quantity can be flexibly and accurately adjusted by means of an electronic governor.

Archive | 1984

Apparatus for removing solid particles from internal combustion engine exhaust gases

Hubert Dettling; Hermann Eisele; Gottlob Haag; Karl-Heinz Hagele; Ernst Dipl Ing Linder; Wilhelm Polach

Archive | 1982

Electro-hydraulic valve control system for internal combustion engine valves

Rudolf Babitzka; Wilhelm Polach; Walter Schlagmuller

Archive | 1981

Apparatus for removing solid components from the exhaust gas of internal combustion engines, in particular soot components

Ernst Dipl Ing Linder; Rudolf Babitzka; Johannes Brettschneider; Wilhelm Polach; Wolf Wessel; Gerhard Stumpp

Archive | 1982

Apparatus to remove solid particles and aerosols from a gas, especially from the exhaust gas of an internal combustion engine

Johannes Brettschneider; Klaus Dobler; Gottlob Haag; Ernst Dipl Ing Linder; Wilhelm Polach

Archive | 1990

Method and arrangement for controlling the injection of fuel in an internal combustion engine

Josef Dipl Ing Wahl; Alf Loffler; Hermann Grieshaber; Wilhelm Polach; Ewald Eblen; Joachim Tauscher; Helmut Laufer; Ulrich Flaig; Johannes Locher; Manfred Birk; Gerhard Engel; Alfred Schmitt; Pierre Lauvin; Fridolin Piwonka; Anton Karle; Hermann Kull

Archive | 1990