scholarly journals Design and Analysis of power-train system of New Pure Electric City Bus

2016 ◽  
Author(s):  
Xiaoying Liu ◽  
Kai Wang ◽  
Liping Zhou ◽  
Jisheng Wang
Keyword(s):  
Power Train ◽  
City Bus ◽  
Train System

A New Type Power Train System of Electric Hybrid Vehicle

2013 ◽  
Vol 385-386 ◽  
pp. 747-750
Author(s):  
Yu Bing Zhang ◽  
Ren Jun Wan ◽  
Hong Tao Chen ◽  
Ren Guang Wang
Keyword(s):  
Planetary Gear ◽  
Transmission Efficiency ◽  
Coupling Mechanism ◽  
Power Train ◽  
Power Coupling ◽  
City Bus ◽  
Power Battery ◽  
Electric Driving ◽  
New Type ◽  
Train System

A new type of electric power train system was designed for fully hybrid electric city bus, which is mainly composed of engine, power coupling mechanism, first motor, second motor, motor controller, power train controller, power battery, and Drive axle. Its main characteristics of power coupling mechanism is adoption of one planetary gear set to realize the function that can be provided by two planetary gear sets. The new power train can be manufactured with lower cost because of its simple structure with higher transmission efficiency and less faults such as oil leakage. The new system can provide five operation modes for city bus, which are hybrid driving, pure electric driving, regenerative braking, grid charging, and stop charging.

scholarly journals Characteristics of Low Frequency Non-Synchronous Vibrations Induced by an Epicyclic Gearbox in Gas Turbogenerator Applications

1998 ◽  
Author(s):  
A. K. Rakhit ◽  
G. A. Cornejo ◽  
G. J. Lack
Keyword(s):  
Low Frequency ◽  
Output Shaft ◽  
Power Train ◽  
Backward Whirl ◽  
Considerable Length ◽  
Potential Damage ◽  
Generator Sets ◽  
Star Configuration ◽  
Train System ◽  
Total Elimination

Epicyclic gearboxes of star configuration running at partial loads were found to induce non-synchronous (not related to speed) low-frequency vibrations, besides low level sub-synchronous (speed related) which were transmitted to other parts of a turbogenerator power train. At certain loads, the amplitudes of the non-synchronous vibrations were high enough to cause potential damage to sleeve bearings used in the power train system if a generator set would run for any considerable length of time at these loads. It was also observed that a very small increase in load above a certain limit (about 18% of full load) resulted in almost total elimination of these vibrations. Analysis of test data showed the non-synchronous vibrations were due to ‘backward whirl’ motion of gearbox output shaft in its sleeve bearings. Higher damping in the bearings was considered to be one of the most effective methods to suppress backward whirl of a shaft and hence, the non-synchronous vibrations. Accordingly, a new set of gearbox output shaft sleeve bearings was designed for higher damping that would allow these types of generator sets to run at partial and full loads without any detrimental vibration.

Advances in the Power train System of Honda FCX Clarity Fuel Cell Vehicle

2009 ◽  
Author(s):  
Minoru Matsunaga ◽  
Tatsuya Fukushima ◽  
Kuniaki Ojima
Keyword(s):  
Fuel Cell ◽  
Fuel Cell Vehicle ◽  
Power Train ◽  
Train System

The Simulation on the Power Train System of the Hybrid Horizontal Directional Driller

2011 ◽  
Vol 127 ◽  
pp. 233-236
Author(s):  
Tao He ◽  
Li Xin Meng ◽  
Zhi Qiang Liu
Keyword(s):  
Hybrid System ◽  
Developed Countries ◽  
Power Train ◽  
Working Cycle ◽  
Rapid Construction ◽  
Control Goal ◽  
Parallel Hybrid ◽  
The Developed Countries ◽  
Train System ◽  
Engine Power

As technology and equipment improves, the horizontal directional driller was gradually accepted in the developed countries in the 1980s. With the rapid construction of urbanization, non-excavating technology is widely used in China. In this paper, a new kind of hybrid technology in the horizontal directional driller is presented. Taking HL518B as a prototype, a parallel hybrid system is designed .The control strategy of the hybrid horizontal directional driller is analyzed on the basis of the several operations in the working cycle. The control goal of whole system is to realize the torque demand of loading. Research is made on how to transform the single engine power into the hybrid power train, At same time the model of hybrid system is established and simulated. The simulation results show the hybrid system can effectively improve the horizontal directional driller fuel economy.

The Optimal Design of Fuel Cell Bus Power Train

2014 ◽  
Vol 590 ◽  
pp. 427-431
Author(s):  
Hong Shi ◽  
Fa Chao Jiang ◽  
Qian Zhang ◽  
Sen Nan Song
Keyword(s):  
Fuel Cell ◽  
Operating Characteristic ◽  
Characteristic Curve ◽  
Gear Ratio ◽  
Transmission Ratio ◽  
Power Performance ◽  
Key Factors ◽  
Power Train ◽  
City Bus ◽  
Operating Characteristic Curve

The transmission ratio of the fuel cell city bus should meet the requirement of economy and power performance. The transmission ratio and the main decelerator are the key factors to the economy and power performance of the bus. The special operating characteristic curve of motor is a basis to analyze the vehicle`s power and economy performance. Combined with the planned and the provided transmission ratio, the optimal gear ratio of the transmission can be calculated. So the vehicle`s economy and power performance are finally improved.

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