Engine Lubrication and Cooling During Hybrid Vehicle Operation BP International, Limited

Format:

Conference/Event

Author/Creator:

Leach, Leach, author.

Contributor:

Pearson, Richard

Conference Name:

SAE 2014 International Powertrain, Fuels & Lubricants Meeting (2014-10-20 : Birmingham, United Kingdom)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2014

Summary:

Rising fuel prices and changes to CO2 and fuel economy legislation have prompted an interest in the electrification of vehicles since this can significantly improve vehicle tailpipe CO2 emissions over homologation test cycles. To this end plug-in hybrid electric vehicles (PHEVs) and range extended electric vehicles (REEVs) have been introduced to the market. The operation of the engines in these vehicles differs from conventional vehicles in several key ways. This study was conducted to better understand how the engine design and control strategy of these vehicles affects the temperature and operating regimes experienced by engine crankcase lubricants.A Toyota Prius Plug-in PHEV and GM Volt REEV were tested on a chassis dynamometer over several legislated and pseudo real world' drive cycles to determine the operating strategy and behaviour of the powertrain. The lubricant and coolant temperatures were monitored, together with other key control parameters. Tests were completed with both hot and cold engine starts at 25°C and 7°C test cell temperatures in charge-depleting and charge-sustaining operating modes.The key findings for both vehicles were:

Notes:

Vendor supplied data

Publisher Number:

2014-01-2784

Access Restriction:

Restricted for use by site license