Fuel Consumption Comparison between Hydraulic Mechanical Continuously Variable Transmission and Stepped Automatic Transmission Based on the Economic Control Strategy

Hydraulic mechanical continuously variable transmission (HMCVT) is a transmission system combining mechanical and hydraulic power flow. The matching and design of the power source and transmission system contribute to the energy-saving and emission reduction of vehicles, and meet the requirements of...

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Main Authors: Yuting Chen, Zhun Cheng, Yu Qian
Format: Article
Language:English
Published: MDPI AG 2022-08-01
Series:Machines
Subjects:
Online Access:https://www.mdpi.com/2075-1702/10/8/699
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author Yuting Chen
Zhun Cheng
Yu Qian
author_facet Yuting Chen
Zhun Cheng
Yu Qian
author_sort Yuting Chen
collection DOAJ
description Hydraulic mechanical continuously variable transmission (HMCVT) is a transmission system combining mechanical and hydraulic power flow. The matching and design of the power source and transmission system contribute to the energy-saving and emission reduction of vehicles, and meet the requirements of modern society for environmental protection and energy-saving. This paper takes the transmission system of the pickup truck as a research object to research the transmission ratio control strategy of a self-designed new HMCVT with the goal of minimizing fuel consumption. The research compares it with the standard stepped automatic transmission (SAT). The vehicle model was based on CarSim and MATLAB/Simulink. The simulation was carried out under the EPA cycle, NEDC, and the six-mode cycle. The fuel consumption of SAT and that of HMCVT were compared. The results show that the average fuel savings of the pickup truck with HMCVT are 4.52% in the EPA cycle, 7.01% in the NEDC, and 4.84% in the six-mode cycle compared to the eight-speed SAT. In conclusion, HMCVT is more economically efficient than SAT.
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spelling doaj.art-0754bf5b76254624848b1987ffbdadd02023-12-01T23:55:42ZengMDPI AGMachines2075-17022022-08-0110869910.3390/machines10080699Fuel Consumption Comparison between Hydraulic Mechanical Continuously Variable Transmission and Stepped Automatic Transmission Based on the Economic Control StrategyYuting Chen0Zhun Cheng1Yu Qian2Department of Vehicle Engineering, Nanjing Forestry University, Nanjing 210037, ChinaDepartment of Vehicle Engineering, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Engineering, Nanjing Agricultural University, Nanjing 210031, ChinaHydraulic mechanical continuously variable transmission (HMCVT) is a transmission system combining mechanical and hydraulic power flow. The matching and design of the power source and transmission system contribute to the energy-saving and emission reduction of vehicles, and meet the requirements of modern society for environmental protection and energy-saving. This paper takes the transmission system of the pickup truck as a research object to research the transmission ratio control strategy of a self-designed new HMCVT with the goal of minimizing fuel consumption. The research compares it with the standard stepped automatic transmission (SAT). The vehicle model was based on CarSim and MATLAB/Simulink. The simulation was carried out under the EPA cycle, NEDC, and the six-mode cycle. The fuel consumption of SAT and that of HMCVT were compared. The results show that the average fuel savings of the pickup truck with HMCVT are 4.52% in the EPA cycle, 7.01% in the NEDC, and 4.84% in the six-mode cycle compared to the eight-speed SAT. In conclusion, HMCVT is more economically efficient than SAT.https://www.mdpi.com/2075-1702/10/8/699hydraulic mechanical CVTfuel consumptioneconomic control strategyunited simulation test
spellingShingle Yuting Chen
Zhun Cheng
Yu Qian
Fuel Consumption Comparison between Hydraulic Mechanical Continuously Variable Transmission and Stepped Automatic Transmission Based on the Economic Control Strategy
Machines
hydraulic mechanical CVT
fuel consumption
economic control strategy
united simulation test
title Fuel Consumption Comparison between Hydraulic Mechanical Continuously Variable Transmission and Stepped Automatic Transmission Based on the Economic Control Strategy
title_full Fuel Consumption Comparison between Hydraulic Mechanical Continuously Variable Transmission and Stepped Automatic Transmission Based on the Economic Control Strategy
title_fullStr Fuel Consumption Comparison between Hydraulic Mechanical Continuously Variable Transmission and Stepped Automatic Transmission Based on the Economic Control Strategy
title_full_unstemmed Fuel Consumption Comparison between Hydraulic Mechanical Continuously Variable Transmission and Stepped Automatic Transmission Based on the Economic Control Strategy
title_short Fuel Consumption Comparison between Hydraulic Mechanical Continuously Variable Transmission and Stepped Automatic Transmission Based on the Economic Control Strategy
title_sort fuel consumption comparison between hydraulic mechanical continuously variable transmission and stepped automatic transmission based on the economic control strategy
topic hydraulic mechanical CVT
fuel consumption
economic control strategy
united simulation test
url https://www.mdpi.com/2075-1702/10/8/699
work_keys_str_mv AT yutingchen fuelconsumptioncomparisonbetweenhydraulicmechanicalcontinuouslyvariabletransmissionandsteppedautomatictransmissionbasedontheeconomiccontrolstrategy
AT zhuncheng fuelconsumptioncomparisonbetweenhydraulicmechanicalcontinuouslyvariabletransmissionandsteppedautomatictransmissionbasedontheeconomiccontrolstrategy
AT yuqian fuelconsumptioncomparisonbetweenhydraulicmechanicalcontinuouslyvariabletransmissionandsteppedautomatictransmissionbasedontheeconomiccontrolstrategy