2-Stroke Externally Scavenged Engines for Range Extender Applications University of Modena and Reggio E.

Format:

Conference/Event

Author/Creator:

Mattarelli, Mattarelli, author.

Contributor:

Baldini, Piero

Cantore, Giuseppe

Rinaldini, Carlo Alberto

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

In this work, the authors assess the potential of the 2-strokeconcept applied to Range Extender engines, proposing 3 differentconfigurations: 1) Supercharged, Compression Ignition; 2)Turbocharged, Compression Ignition; 3) Supercharged, GasolineDirect Injection. All the engines feature a single power cylinderof 0.49l, external air feed by piston pump and an innovativeinduction system. The scavenging is of the Loop type, withoutpoppet valves, and with a 4-stroke like lubrication system (nocrankcase pump).Engine design has been supported by CFD simulations, both 1D(engine cycle analysis) and 3D (scavenging, injection andcombustion calculations). All the numerical models used in thestudy are calibrated against experiments, carried out on engines assimilar as possible to the proposed ones.The strong points found for this family of engines are: highpower density (up to 122 kW/l) and power-to-weight ratio; low rawemissions; compactness (design integrated with the electric motor);low production costs (no valve train, no EGR system); excellentbalance of inertia forces (thanks to the piston pump installed onthe same crankshaft, at 90° from the power cylinder); mechanicalreliability (no exotic solutions, effective lubrication system);low noise (low engine speeds thanks to the double frequency of thecycle); low specific fuel consumption

Notes:

Vendor supplied data

Publisher Number:

2012-01-1022

Access Restriction:

Restricted for use by site license