Ulrich Kramer
Ford Motor Company
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Ulrich Kramer.
SAE transactions | 2004
Ulrich Kramer; Klaus Badke; Frank Wytrykus; Dieter Wissussek
Spark ignited engines with direct fuel injection into the combustion chamber can be started by injecting fuel into the combustion chamber of the stopped engine and igniting it afterwards with the spark plug. The explosion of the air fuel mixture initially rotates the crankshaft. The engine is started without motoring the crankshaft with a starter device. The described start procedure is called Direct Start. For a successful Direct Start a maximum oxygen concentration in the Direct Start Cylinders (the cylinders utilized initially for the Direct Start) is required, because the oxygen concentration in the start cylinders determines the maximum amount of energy, which can be exploited to move the crankshaft over the following TDC (Top Dead Center). After the engine stop the Direct Start Cylinder valves are closed. Therefore the oxygen concentration has to be maximized during the preceding engine shut down. For the following Direct Start also an appropriate prediction of the oxygen concentration in the Direct Start Cylinders is important, with the aim to be able to meter a suitable amount of fuel for the Direct Start.
Archive | 2016
Heiko Maas; Andreas Schamel; Carsten Weber; Ulrich Kramer
Over next decade, SI engines might adopt a significant amount of design solutions from CI engines. Therefore none of both can be finally called the winner – they are merging into an optimized engine for future sustainability requirements and heavily depend on technology readiness and technology cost, customer acceptance as well as total cost of ownership assessments. The fuel of choice (e.g. E-methane and E-DME) might determine which engine type can deliver lowest CO2 emissions.
Archive | 2003
Klemens Grieser; Ulrich Kramer
SAE 2002 World Congress & Exhibition | 2002
Ulrich Kramer; Patrick Phlips
Archive | 2003
Klemens Grieser; Ulrich Kramer; Klaus Badke
Archive | 2005
Patrick Phlips; Bernd Steiner; Klemens Greiser; Ulrich Kramer; Markus Lemmen; Ulla Weimann Macdonald
Archive | 2003
Klaus Badke; Klemens Grieser; Ulrich Kramer; Harald Stoffels
Archive | 2005
Bernd Steiner; Ulrich Kramer; Klemens Greiser; Patrick Phlips; Harald Stoffels; Torsten Sude
Archive | 2002
Klemens Grieser; Ulrich Kramer; Klaus Badke
Archive | 2011
Ross Dykstra Pursifull; Ulrich Kramer