Authors: Morgan Andreae; Burit Kittirungsi; Tejas Kinjawadekar
Addresses: Growth Office, Cummins Inc., Columbus IN, USA ' Systems Performance Analysis, Cummins Inc., Columbus IN, USA ' Advanced Systems Integration, Cummins Inc., Columbus IN, USA
Abstract: This paper proposes strategies for powertrain evaluation that allow a consistent evaluation of performance across the entire powertrain operating range. Two options for powertrain evaluation are proposed: powertrain testing, and powertrain-in-loop testing. Simulation is used to illustrate how the procedures could be implemented. The key feature of the proposed procedures is the linking of the engine certification test cycles with aligned powertrain and vehicle cycles. This would allow consistent evaluation of emissions for engine and powertrain, and would allow development efforts to build on experience gained in years of emissions compliance work. The paper uses the US EPA heavy duty engine transient federal test procedure (FTP) test and the steady state supplemental emissions test (SET) as a starting point. As with the engine cycles, the proposed procedures would be vehicle independent thereby minimising the proliferation of development efforts.
Keywords: heavy duty powertrains; powertrain evaluation; powertrain testing; powertrain-in-loop testing; simulation; engine certification test cycles; vehicle emissions.
International Journal of Powertrains, 2015 Vol.4 No.3, pp.283 - 301
Received: 05 Mar 2014
Accepted: 04 Mar 2015
Published online: 16 Sep 2015 *