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Effect of Lock-up Control Strategy on Vehicle Fuel Economy  

Kim, Woo-Seok (Hyundai Motor Co.)
Han, Chang-Ho (Automotive Engineering Lab, Ajou University)
Kim, Nam-Kyun (Automotive Engineering Lab, Ajou University)
Park, Kyung-Seok (School of Mechanical Engineering, Kumho University)
Park, Jin-Il (School of Mechanical Engineering, Ajou University)
Lee, Jong-Hwa (School of Mechanical Engineering, Ajou University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.14, no.2, 2006 , pp. 9-15 More about this Journal
Abstract
Experiments are conducted to compare fuel economy of FTP-75 mode on two different lock-up conditions; (A) Lock-up on at engine speed of 1,200(rpm) and above for 3rd & 4th gear, (B) Lock-up on at engine speed of 1400rpm and above for 4th gear only. As a result, case A had better fuel economy about 2.75(%) than case B for FTP-75 mode. Simulation(CRUISE, AVL) study is also carried out in order to estimate the effect of Lock-up control strategy for vehicle fuel economy. The fuel economy simulation result agrees with the measured fuel economy within error of 2(%). The improved Lock-up control strategy is proposed by simulation.
Keywords
Fuel economy; Break-down of vehicle fuel consumption; Fuel economy during acceleration; BSFC;
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