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Author Cheong, Kai Loon ♦ Li, Perry Y. ♦ Sedler, Stephen ♦ Chase, Thomas R.
Source CiteSeerX
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Light Weight Hydraulic Hybrid Vehicle ♦ Total Loss ♦ Normal Power-split Operation ♦ Individual Pump Motor ♦ Hybrid Vehicle ♦ Optimization Method ♦ Electric Hybrid ♦ Power-split Configuration ♦ Architecture Present Different Challenge ♦ Optimization Process ♦ Pump Motor ♦ Parallel Architecture ♦ Standard Federal Driving Cycle ♦ Distinct Mode ♦ Wheel Speed ♦ Popular Solution ♦ Operational Characteristic ♦ Hydraulic Hybrid Vehicle ♦ Power-split Architecture Offer Advantage ♦ Operation Mode ♦ Fuel Economy ♦ Fuel Consumption ♦ Overall Fuel Consumption ♦ Vehicle Dynamic ♦ Optimal Pump Motor Size ♦ Gear Ratio ♦ Result Show
Description Hybridizing powertrains of vehicles has been a popular solution to reduce fuel consumption. The power-split architecture offers advantages from both the series and parallel architectures. The two simplest power-split configurations are input coupled and output coupled transmissions. This paper presents a comparison between these two power-split configurations on a light weight hydraulic hybrid vehicle. The size of the pump/motors and gear ratios in the transmission are optimally selected to minimize the total loss for a standard federal driving cycle on each configuration. In the optimization process, in addition to the normal power-split operation, individual pump/motors were allowed to be locked up to reduce losses in the components. This results in each configuration being able to operate in four distinct modes. The optimization process then chooses the operation mode at each time instant to minimize the overall fuel consumption. Results show that mileage is similar for both architectures but the optimal pump/motor sizes of input coupled is slightly smaller and their operational characteristics are different. However, the two architectures present different challenges to controlling the vehicle dynamics, depending on whether control of the wheel speed or torque is desired. Applying the same optimization method, electric hybrid is briefly compared with hydraulic hybrid vehicle, and result shows they are comparable in fuel economy.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2011-01-01
Publisher Institution Proceedings of the 52nd National Conference on Fluid Power, National Fluid Power Association, Milwaukee, WI 53222-3219. Paper