Wolfgang Wenzel

Hybrid coolant pump with electric and mechanical drive

The new hybrid coolant pump from BorgWarner combines the advantages of electrically and mechanically driven pumps in a single system. In electric mode, the pump can be flexibly controlled, while in mechanical mode it operates with a high efficiency. Extensive simulation by BorgWarner has demonstrated the potential of the hybrid pump for achieving further improvements in fuel economy.

Hybrid-Kühlmittelpumpe mit Elektrischem und Mechanischem Antrieb

Die neue Hybrid-Kuhlmittelpumpe von BorgWarner vereint die Vorteile elektrisch und mechanisch angetriebener Pumpen in einem System: Im elektrischen Modus ist sie flexibel regelbar, im mechanischen Modus arbeitet sie mit hohem Wirkungsgrad. Umfangreiche Simulationen von BorgWarner zeigen das Potenzial der Hybridpumpe zur weiteren Verbrauchseinsparung auf.

Acoustic design for charged engines

Supercharging engines faces two problems with respect to the intake noise: on the one hand the additional noise from the compressor has to be suppressed by special measures. On the other hand, the noise reduction of the charger system in the intake system means that the load and speed-dependent engine noise is lost. Sound transmitters such as the Symposer are the best solution for acoustically attractive vehicles. This solution, developed to maturity by Ford and Mann+Hummel, brings back an authentic sound to these vehicles.

Development of a 48V P0 demonstration vehicle with eBooster® air charging

A demonstration vehicle is presented where improvements to the electrical and air induction systems are made which provide increased performance with improved fuel economy. This is made possible by a 48 V architecture which enables the deployment of new components, specifically a belted motor generator unit (MGU) and electricallydriven compressor (eBooster®). The synergy between these components enables energy efficient means to collect regenerated energy and provide added torque, faster engine response, and extended engine off operation among a list of added features. Control features and strategy are highlighted along with simulation and vehicle test data. Resultant performance and fuel economy benefits are reviewed which support the contention of 48 V being a cost effective architecture to enable CO2 reduction relative to a high voltage hybrid.

Inlet swirl throttle for passenger car engines

The optimization of the boosting system plays a significant role in the evolution of gasoline and diesel engine towards increased fuel efficiency and reduced emissions.

Thermal management for a light-dutyvehicle with diesel engine: Evaluation of an optimized cooling system with variable cooling components

Vehicle thermal management faces increased importance since a higher efficiency of ICE powered vehicles is requested. The fuel consumption benefits from thermal management is linked to two areas: By using the coolant pump and fan according to the real demand and improving their efficiency the auxiliary losses can be reduced and secondly: by operating the engine in an optimal temperature range regarding friction and combustion the overall powertrain efficiency can be increased. At cold start, the fast warm up of the engine and the transmission is important. During normal operation, the cooling system has to keep the engine in a temperature range that friction is minimized, protect the engine from overheating and create minimum auxiliary losses.

Secondary-air charger for reducing cold-start emissions

Legislation has promoted continuous further development of the emission standards of gasoline engines. At the same time, the automotive industry has made successful efforts to comply with these standards. For a number of years, secondary-air injection into the exhaust system has been used as an effective means of reducing cold-start emissions. Mann+Hummel has now developed a new principle for the injection of secondary air, the so-called secondary-air charger.