This paper forms the third of a series and presents results
obtained during the testing and development phase of a dedicated
range-extender engine designed for use in a compact-class vehicle.
The first paper in this series used real-world drive logs to
identify usage patterns of such vehicles and a driveline model was
used to determine the power output requirements of a range-extender
engine for this application. The second paper presented the results
of a design study. Key attributes for the engine were identified,
these being minimum package volume, low weight, low cost, and good
NVH. A description of the selection process for identifying the
appropriate engine technology to satisfy these attributes was given
and the resulting design highlights were described. The paper
concluded with a presentation of the resulting specification and
design highlights of the engine.
This paper will present the resulting engine performance
characteristics. The performance targets set for the engine during
the initial phase of the study have been met. An initial package
study of the integration of the engine into a vehicle will be
presented, along with the results of a driveline modeling study,
giving details of drive-cycle tailpipe CO₂ estimates for a
range-extended electric vehicle fitted with the MAHLE
range-extender engine.