Automatic Enumeration of Feasible Configuration for the Dedicated Hybrid Transmission With Multi-Degree-of-Freedom and Multiplanetary Gear Set

2019 ◽  
Vol 141 (9) ◽  
Author(s):  
Xiangyang Xu ◽  
Hanqiao Sun ◽  
Yanfang Liu ◽  
Peng Dong
Keyword(s):  
Operation Mode ◽  
Planetary Gear ◽  
Design Approach ◽  
Synthesis Process ◽  
Second Step ◽  
Design Constraints ◽  
Hybrid Transmission ◽  
Planetary Gear Sets ◽  
Configuration Synthesis ◽  
Novel Design

This paper presents a novel design approach to systematically synthesize available configurations for dedicated hybrid transmission (DHT) systems subject to design constraints and required operation modes by using simple planetary gear sets (PGSs). The configuration synthesis process includes two main steps. The first step is the synthesis of the PGSs by synthesizing all the components to a simple PGS subject to the design constraints. The second step is to combine the structural and shift elements into all configurations and detect those meeting the requirements with the mechanical and operation mode constraints. By applying the proposed design approach, the configurations of the Toyota’s hybrid systems (THSs) and Voltec-II prove the feasibility of the method. Furthermore, several new DHT configurations are synthesized under the new design conditions. The proposed design approach is capable of systematically synthesizing new DHT systems with multiple PGSs, variable design constraints, and expected modes.

Novel Configurations for Hybrid Transmissions Using a Simple Planetary Gear Train

2015 ◽  
Vol 8 (2) ◽  
Author(s):  
Huu-Tich Ngo ◽  
Hong-Sen Yan
Keyword(s):  
Planetary Gear ◽  
Gear Train ◽  
Design Approach ◽  
Synthesis Process ◽  
Design Constraints ◽  
Planetary Gear Train ◽  
Operation Modes ◽  
Parallel Hybrid ◽  
Hybrid Transmission ◽  
Configuration Synthesis

This paper presents a design approach to systematically synthesize feasible configurations for series–parallel and parallel hybrid transmissions subject to design constraints and required operation modes using a simple planetary gear train (PGT). The configuration synthesis process includes two main steps: (1) assign inputs and output powers to the PGT subject to design constraints by the power arrangement process and (2) assign clutches and brakes to the obtained systems subject to desired operation modes by the clutch arrangement process. By applying the proposed design approach, 9 clutchless and 31 clutched configurations for series–parallel and parallel hybrid transmission systems are synthesized, respectively. For each type of the hybrid systems, we analyzed kinematics and power flows of a new configuration to demonstrate the feasibility of the synthesized systems. The design approach can be used to systematically synthesize future hybrid transmissions with different mechanisms, design constraints, and desired operation modes.

Novel Configurations for Hybrid Transmissions Using a Simple Planetary Gear Train

2015 ◽  
Author(s):  
Huu-Tich Ngo ◽  
Hong-Sen Yan
Keyword(s):  
Hybrid Systems ◽  
Power Flow ◽  
Planetary Gear ◽  
Gear Train ◽  
Design Approach ◽  
Synthesis Process ◽  
Design Constraints ◽  
Planetary Gear Train ◽  
Operation Modes ◽  
Parallel Hybrid

This paper presents a design approach to systematically synthesize feasible configurations for series-parallel and parallel hybrid transmissions subject to design constraints and required operation modes using a simple planetary gear train (PGT). The configuration synthesis process includes two main steps: 1) assign inputs and output powers to the PGT subject to power constraints by the power arrangement process; and 2) assign clutches and brakes to the obtained systems subject to desired operation modes by the clutch arrangement process. By applying the proposed design approach, nine clutchless and 31 clutched configurations for series-parallel and parallel hybrid systems are synthesized, respectively. For each type of the hybrid systems, we analyzed kinematic and power flow of a new configuration to demonstrate the feasibility of the synthesized systems. The design approach can be used to systematically synthesize future hybrid transmissions with different mechanisms, design constraints, and desired operation modes.

scholarly journals Configuration Synthesis of Novel Hybrid Transmission Systems Using a Combination of a Ravigneaux Gear Train and a Simple Planetary Gear Train

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2333 ◽  
Author(s):  
Thanh-Tho Ho ◽  
Sheng-Jye Hwang
Keyword(s):  
Design Methodology ◽  
Power Flow ◽  
Planetary Gear ◽  
Gear Train ◽  
Design Constraints ◽  
Planetary Gear Train ◽  
Operation Modes ◽  
Hybrid Transmission ◽  
Design Requirements ◽  
Configuration Synthesis

Thirty-two novel hybrid transmissions consisting of a Ravigneaux gear train and a single planetary gear train are synthesized using a creative design methodology based on graph-theory and the lever analogy method. The design process commences by identifying an existing transmission configuration which meets all of the design requirements. The chosen design is then used to synthesize all possible mechanism permutations which satisfy the design constraints. The feasible mechanisms which satisfy both the design requirements and the design constraints are converted into analogous levers. The levers which fail to provide the required operation modes of the hybrid transmission are eliminated and the remaining levers are assigned brakes and clutches in order to realize the final designs. The responsiveness of the new hybrid transmissions and the feasibility of the proposed design methodology are confirmed by analyzing the power flow and kinematics of one of the designs in all of the operation modes.

scholarly journals On the Design of In-Wheel-Hub Motor Transmission Systems with Six-Link Mechanisms for Electric Vehicles

2018 ◽  
Author(s):  
Ngoc-Tan Hoang ◽  
Hong-Sen Yan
Keyword(s):  
Electric Vehicles ◽  
Power Flow ◽  
Operation Mode ◽  
Synthesis Process ◽  
Energy Regulation ◽  
Mode Transition ◽  
Flow Paths ◽  
Simulation Process ◽  
Working Principle ◽  
Configuration Synthesis

Nowadays, there are several electric vehicle (EV) on the market, due to the innovation of technology that promotes the new components such as battery, transmission, electric motors. This paper proposes a design approach for the configuration synthesis and simulation of the in-wheel-hub motor transmissions with the six-link mechanisms. The synthesis process shows 6 mechanisms with six members and eight joints, 15 new clutchless motor transmissions and 16 new clutched motor transmissions. A novel motor transmission in the feasibility of the synthesized configurations is selected as an example to analyze the working principle with operation modes and power flow paths. And, this design is modeled for the simulation process that generates the results of operation mode transition and energy regulation.

scholarly journals On the Design of In-Wheel-Hub Motor Transmission Systems with Six-Link Mechanisms for Electric Vehicles

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2920 ◽  
Author(s):  
Ngoc-Tan Hoang ◽  
Hong-Sen Yan
Keyword(s):  
Electric Vehicles ◽  
Power Flow ◽  
Operation Mode ◽  
Design Procedure ◽  
Synthesis Process ◽  
Energy Regulation ◽  
Mode Transition ◽  
Electric Motors ◽  
Simulation Process ◽  
Configuration Synthesis

Nowadays, there are several electric vehicles (EV) on the market, due to the innovation of technology that promotes new components such as batteries, transmissions, and electric motors. This study proposes the design procedure for the configuration synthesis and simulation of in-wheel-hub motor transmissions with six-link mechanisms. The synthesis process shows six mechanisms with six members and eight joints, 15 new clutchless motor transmissions, and 16 new clutched motor transmissions. A novel motor transmission with the possibility of synthesized configurations is chosen as a case to analyze the working rules connected with the power flow modes and operation modes. Moreover, this design is modeled for the simulation process that generates the results of the operation mode transition and energy regulation.

Dynamic Analysis and Various Mode Strategy Comparisons of the Two-Mode Hybrid Transmission

2013 ◽  
Vol 584 ◽  
pp. 92-96
Author(s):  
Ai Min Du ◽  
Da Jin Xu
Keyword(s):  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Mode Selection ◽  
Planetary Gear ◽  
Selection Strategies ◽  
Transmission Modes ◽  
Variable Transmission ◽  
Hybrid Transmission ◽  
Planetary Gear Sets ◽  
Hybrid Electric

In 2007, a new hybrid electric vehicle was released by General Motor, which is called as Two-mode hybrid electric vehicle. The two-mode hybrid car is famous for its hybrid transmission, which contains two electric motors/generators, three planetary gear sets and four controlled clutches, and allows six different operation modes: two electrically variable transmission modes and four fixed-gear modes [. This paper analyzes the operating condition of the electric machines (Motors/generators) in each mode. And then, it presents three mode selection strategies in order to make a comparison of them.

Dynamic modelling and parametric optimization of a full hybrid transmission

2018 ◽  
Vol 233 (1) ◽  
pp. 17-29 ◽  
Author(s):  
Han Guo ◽  
Jianwu Zhang ◽  
Haisheng Yu
Keyword(s):  
Dynamic Modelling ◽  
Planetary Gear ◽  
Computational Effort ◽  
Gear Train ◽  
Dynamic Responses ◽  
Compound Type ◽  
Tooth Modification ◽  
Hybrid Transmission ◽  
Planetary Gear Sets ◽  
Type Power

In this paper, vibro-impact-induced gear whine radiated by full hybrid transmission equipped with a compound type power-split planetary gear train is investigated. For accurate simulations of the planetary gear set vibrations, an integrated dynamic model of the transmission is established using professional software MASTA, on which compliance effects of gear pairs, bearings, shafts, housing and planetary carrier are counted for. Numerical analyses are carried out for dynamic responses of the hybrid transmission. Bench tests are also conducted for the present model validation. Computational effort is made to recognize parametrically resonate patterns that cause gear whine in experiment. An optimal tooth modification design is presented for the real planetary gear set. It is shown by test results using the optimized planetary gear sets that gear whine responses of the gearboxes are considerably improved.

A novel design approach to capture brake emissions in four wheelers

2020 ◽  
Author(s):  
Prakash Subramaniam ◽  
S. Sundaram ◽  
K. Gunasekaran ◽  
G. Vikas Reddy ◽  
Kaja Bantha Navas Raja Mohamed ◽  
...  
Keyword(s):  
Design Approach ◽  
Novel Design

scholarly journals Tablet fragmentation without a disintegrant: A novel design approach for accelerating disintegration and drug release from 3D printed cellulosic tablets

2018 ◽  
Vol 118 ◽  
pp. 191-199 ◽  
Author(s):  
Basel Arafat ◽  
Magdalena Wojsz ◽  
Abdullah Isreb ◽  
Robert T. Forbes ◽  
Mohammad Isreb ◽  
...  
Keyword(s):  
Drug Release ◽  
Design Approach ◽  
3D Printed ◽  
Novel Design
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