Hydraulic System Control for a Hybrid Continuously Variable Transmission Based on an Electric Oil Pump

Control system and some functional circuits of automotive CVT (Continuously Variable Transmission) based on ATmega164P single chip computer were introduced in this paper. Hydraulic system of the CVT was controlled according to the throttle position signal, oil pressure, rotating speed of the engine and transmission output speed etc. This system has achieved the clamping force control of the metal belt.

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Energy consumption of parallel type hybrid electric vehicle with continuously variable transmission using electric oil pump

2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER) ◽

10.1109/ever.2018.8362364 ◽

2018 ◽

Cited By ~ 6

Author(s):

Junbeom Wi ◽

Hyunhwa Kim ◽

Jiho Yoo ◽

Hanho Son ◽

Hyunsoo Kim ◽

...

Keyword(s):

Energy Consumption ◽

Electric Vehicle ◽

Hybrid Electric Vehicle ◽

Continuously Variable Transmission ◽

Oil Pump ◽

Variable Transmission ◽

Hybrid Electric ◽

Parallel Type

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Control Speed Ratio Electro-Hydraulic System of Continuously Variable Transmission (CVT) by Robust PI Controller

International Journal of Engineering and Technology ◽

10.7763/ijet.2013.v5.618 ◽

2013 ◽

pp. 561-565 ◽

Cited By ~ 1

Author(s):

Sameh Bdran ◽

Ma Shuyuan ◽

Samo Saifullah ◽

Jie Huang

Keyword(s):

Hydraulic System ◽

Pi Controller ◽

Continuously Variable Transmission ◽

Speed Ratio ◽

Variable Transmission

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Modeling and Simulation of Continuously Variable Transmission (CVT) Hydraulic System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.622-623.1221 ◽

2012 ◽

Vol 622-623 ◽

pp. 1221-1225

Author(s):

Ma Shu Yuan ◽

Bdran Sameh ◽

Saifullah Samo

Keyword(s):

Control System ◽

Modeling And Simulation ◽

Dynamic Modeling ◽

Dynamic Characteristics ◽

Hydraulic System ◽

Continuously Variable Transmission ◽

Hydraulic Control ◽

Variable Transmission ◽

Hydraulic Control System

As most of today’s a continuously variable transmission (CVT) adopt an electro-hydraulic control system, the role of electronically controlled solenoid valves play an important stature. This paper presents a dynamic modeling and simulation of CVT hydraulic system using Matlab-simulink package and analyzes the dynamic characteristics of the CVT hydraulic system in frequency domain.

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Research on Control Strategy and Experiment of Electronic Mechanical Continuously Variable Transmission

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.88-89.191 ◽

2011 ◽

Vol 88-89 ◽

pp. 191-196

Author(s):

Lei Zhang ◽

Yan Chun Zhai ◽

Hai Xin Zhao ◽

Guan Jin Chen

Keyword(s):

Control Strategy ◽

Pid Control ◽

Hydraulic System ◽

Control Algorithm ◽

Continuously Variable Transmission ◽

Speed Ratio ◽

Manufacturing Cost ◽

Speed Governor ◽

Continuously Variable Transmissions ◽

Variable Transmission

Nowadays, most of continuously variable transmissions (CVT) adopt hydraulic system to exert pressure on the cone-plate, in order to realize variable speed control. Electronic Mechanical Continuously Variable Transmission (EMCVT) studied in this paper, however, used rolling screw mechanism instead of the energy-hungry hydraulic system. Mechanical speed governor controlled by electro was adopted in EMCVT to regulate speed, which not only reduced the automobile’s fuel consumption, but also brought down the transmission’s manufacturing cost and failure rate obviously. Further study on the ratio control strategy of EMCVT was made and digital PID control algorithm with target ratio tracing was raised. Moreover, an improved PID control algorithm, that was integral separation and differential precession algorithm, was given. Platform experiment of EMCVT was finished, thus, the functionality and rationality of this transmission’s mechanical structure was proved, so was the feasibility and rationality of the speed ratio control strategy.

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