Time filter

Source Type

Neuß, Germany

Flierl R.,University of Kaiserslautern | Lauer F.,University of Kaiserslautern | Breuer M.,Kolbenschmidt Pierburg AG | Hannibal W.,enTec CONSULTING GmbH
SAE Technical Papers

The targets for future gasoline engines in terms of fuel consumption and exhaust gas emissions require the introduction of advanced technologies to increase engine efficiency. The mechanically fully-variable valve train system UniValve is an effective device to reduce fuel consumption through throttle-free load control. This is achieved by the simultaneous variation of valve lift and valve opening event. The method of cylinder deactivation by closing the gas exchange valves is a further approach to increase the efficiency of combustion engines especially at part load. This paper presents the combination of both techniques on a downsized, turbo charged 4-cylinder DI gasoline engine. The mechanical integration of the valve shut-off capability for cylinder deactivation into the Univalve system is explained and strategies for the transition between 2-cylinder and 4-cylinder modus are discussed. The thermodynamic benefits through adoption of both technologies are analyzed and a reasonable application area of cylinder deactivation in the engine operation map is pointed out. In the conclusion, the achievable fuel consumption benefits will be presented. Copyright © 2012 SAE International. Source

Neumann M.,Kolbenschmidt Pierburg AG | Riel A.,Grenoble Institute of Technology | Brissaud D.,Grenoble Institute of Technology
Communications in Computer and Information Science

The capacity of innovation and creative performance have become a major stake for the success of companies. Today companies act in an environment which is more competitive and complex than ever before. Thus, to succeed in the global market, it is necessary to combine customer needs, productivity and competitiveness in the development of new product innovations. To this aim, innovation management has to leverage idea generation and capitalization. This paper investigates the importance of idea generation and idea sources in innovation management. A case study which links these theoretical principles with industry experiences shows that the enlargement of idea sources can boost innovation power. © Springer-Verlag Berlin Heidelberg 2011. Source

Neumann M.,Kolbenschmidt Pierburg AG | Rie A.,Grenoble Institute of Technology | Brissaud D.,Grenoble Institute of Technology
Journal of software: Evolution and Process

Innovative product development is highly dependent on new product ideas and product information. This especially applies to companies that obtain their competitive advantages by technological lead like the automotive supplier industry. Innovation management in these industries has to focus on an efficient idea generation, implementation and capitalisation, and on technology tracking. This paper gives an insight into the industry-sector-specific characteristics of innovation management within the automotive supplier industry, and outlines a basic scheme of an innovation management system that aims at improving the existing innovation management at the automotive supplier Kolbenschmidt Pierburg AG. © 2011 John Wiley & Sons, Ltd. Source

Flierl R.,University of Kaiserslautern | Schmitt S.,University of Kaiserslautern | Kleinert G.,Kolbenschmidt Pierburg AG | Esch H.-J.,Kolbenschmidt Pierburg AG | Dismon H.,Kolbenschmidt Pierburg AG

The Univalve fully variable valve train system on the inlet side enables a reduction of up to 12 % in partial-load fuel consumption through throttle-free load control, friction optimization and well-aimed residual gas control. Furthermore, given a demand-oriented design of the eccentric camshaft contour, the Univalve is able to provide a valve lift phasing (asymmetric valve lift) to generate charge motion for an additional reduction in fuel consumption by optimized residual gas compatibility. The full-load performance of downsizing concepts is improved considerably through careful adjustment of the valve overlap and filling-optimized closure of the inlet valves with the Univalve. Heightened low-end torque can be transformed into additional fuel savings by additional downspeeding. Additional potential in partial and full load can be exploited by installing the Univalve on the outlet side. Meriting particular mention here is the special case of the four-cylinder turbocharged engine, in which the conflicting goals of lower partial load fuel consumption and higher low-end torque can be successfully resolved. Univalve thus represents an effective means of meeting the requirements for greater efficiency and improved torque performance in future engine concepts. Source

Discover hidden collaborations