Topological Design of Parallel Hybrid Transmission With Electric Torque Support

2015 ◽  
Author(s):  
Zengxiong Peng ◽  
Shihua Yuan ◽  
Jibin Hu ◽  
Mingfei Gao
Keyword(s):  
Nonlinear Equations ◽  
Electric Motor ◽  
Degrees Of Freedom ◽  
Combustion Engine ◽  
Transmission Efficiency ◽  
Gear Ratio ◽  
Manufacturing Cost ◽  
Power Performance ◽  
Parallel Hybrid ◽  
Hybrid Transmission

In the last years hybrid Transmissions have spread worldwide in the automotive industry due to their excellent power performance and good fuel economy. The design of parallel hybrid automatic manual transmission (AMT) with electric torque support using one electric motor is a good solution of obtaining high transmission efficiency and low manufacturing cost. The gear pairs between the combustion engine (CE) shaft and electric motor (EM) shaft are assigned to form the new architecture of three degrees of freedom (DOFs) AMT with electric torque support, which provides several CE gears ratios and several EM gears ratios. All theoretical layouts of parallel hybrid AMT with three shafts are presented and classified into four types. And the synthesis of the gear ratios sequence is developed to satisfy power shifting. The gear ratios can be divided into direct gear ratio and generated gear ratio. The ratio design of generated gear is dependent on the ratio of the direct gears, so the design of gear ratio can be transformed into the solution of over-determined nonlinear equations. An algorithm of minimax solution for over-determined nonlinear equations is presented to design and evaluate gear ratios. The three-DOF three-shaft AMT with electric torque support are designed to obtain seven CE gear ratios. This paper helps to further the understanding of the systematic design of parallel hybrid AMT with electric torque support.

A Novel Parallel Hybrid Motorcycle Transmission

2006 ◽  
Vol 505-507 ◽  
pp. 1021-1026
Author(s):  
Kuen Bao Sheu ◽  
Tsung Hua Hsu ◽  
Yuan Yong Hsu
Keyword(s):  
Electric Motor ◽  
Combustion Engine ◽  
Power Sources ◽  
Parallel Hybrid ◽  
Motor Mode ◽  
Variable Transmission ◽  
Hybrid Transmission ◽  
Charging Mode ◽  
Power Mode ◽  
Chain Drives

This paper presents a novel parallel hybrid transmission for motorcycles. This transmission incorporates a mechanical type rubber V-belt continuously variable transmission and chain drives to combine the power of the two power sources, an internal combustion engine and an electric motor. By using the mechanical type clutches used in the proposed transmission, it can provide a parallel hybrid that can be grouped into four modes of operation: electric motor mode, engine mode, engine/charging mode, and power mode. A design example is built and tested.

scholarly journals Dynamics and efficiency of planetary gear sets for hybrid powertrains

2015 ◽  
Vol 230 (7-8) ◽  
pp. 1359-1368 ◽  
Author(s):  
M Mohammadpour ◽  
S Theodossiades ◽  
H Rahnejat
Keyword(s):  
Electric Motor ◽  
Hybrid Electric Vehicle ◽  
Combustion Engine ◽  
Planetary Gear ◽  
Transmission Efficiency ◽  
Drive Mode ◽  
Planetary Gear Sets ◽  
Hybrid Electric ◽  
Noise Vibration ◽  
Six Degree Of Freedom

The paper presents a tribo-dynamic model for planetary gear sets of hybrid-electric-vehicle configurations. The model comprises a six degree-of-freedom torsional multi-body dynamic system, as well as a tribological contact model in order to evaluate the lubricant film thickness, friction and efficiency of the meshing gear teeth contacts. The tribological model takes into account the non-Newtonian, thermal-mixed elastohydrodynamic regime of lubrication. Analysis is performed for a hybrid electric C-segment vehicle. The simulated conditions correspond to cases of power supplied by either the engine or the electric motor. The results illustrate that in the electric motor drive mode, improved noise, vibration and harshness refinement would be expected, whereas better transmission efficiency is achieved in the internal combustion engine drive mode.

scholarly journals An Assessment of Low-Cost Tractor Motorization with Main Farming Implements

2020 ◽  
Vol 11 (4) ◽  
pp. 74
Author(s):  
Yassine Zahidi ◽  
Mohamed El Moufid ◽  
Siham Benhadou ◽  
Hicham Medromi
Keyword(s):  
Electric Motor ◽  
Combustion Engine ◽  
Low Cost ◽  
Hybrid Architecture ◽  
Power Demand ◽  
Fuel Savings ◽  
Parallel Hybrid ◽  
Final Round ◽  
Very High ◽  
Moldboard Plow

The objective of the present work is to evaluate the performance of a low-cost tractor equipped with a parallel hybrid engine, which was simulated using AMESim software. The tractor was evaluated with three different farming implements attached to the tractor, and each implement requires a different type of power. The first simulation was executed without any implements attached. The tractor was able to run for 170 s with the electric motor only, which resulted in fuel savings during this period. The first implement, a moldboard plow, was attached for the second round of evaluation, and the electric motor ran by itself for 150 s, which also led to fuel savings during operation. During the third simulation, the tractor was attached to a Bette Harvest, which has a very high-power demand. The obtained results show that both engines were engaged to provide the required energy. During the final round of evaluation, simulations were run for a straw tub grinder. In this simulation, the electric motor ran alone until the battery was fully discharged. Thereafter, the combustion engine was activated in order to facilitate operations and to charge the battery. The results show that the parallel hybrid architecture employed for the low-cost tractor significantly decreased the CO2 emissions and minimized the consumption of fuel.

scholarly journals Feasibility of a Clutchless Dual-Shaft Hybrid Transmission System for Performance Applications

2016 ◽  
Author(s):  
Sahil Shah ◽  
Victor Prost ◽  
Zachary Eubanks ◽  
Paige Reiter ◽  
Daria Bondarchuk ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Electric Motor ◽  
Combustion Engine ◽  
Regenerative Braking ◽  
Electric Transmission ◽  
High Acceleration ◽  
Viscous Losses ◽  
Hybrid Transmission ◽  
Reverse Gear ◽  
Viable Method

A novel hybrid-electric transmission concept was sought that yields higher acceleration and smoother gear-shifts compared to existing dual-clutch systems while improving the energy efficiency of the vehicle. After evaluating a range of strategies, the elimination of the clutch was identified as a viable method for reducing the vehicle’s effective inertia and viscous losses. The proposed architecture implements a single electric motor, and two separate shafts for odd and even gears, to replace the functions of a clutch. High acceleration rates can be achieved using the electric motor when launching the vehicle. Furthermore, the torque from the electric motor (EM) and internal combustion engine (ICE) can be simultaneously delivered through the two shafts to sustain this high acceleration. A 0 to 100 km/hr time of 3.18 s was simulated for a 1600 kg vehicle using a 180 kW EM and 425 kW ICE. In addition, the EM can be used to match the speeds of consecutive gears on the two shafts to reduce jerk while shifting. Shift durations were found to vary between 0.2 and 0.9 s using this strategy. Other benefits include regenerative braking and the removal of the reverse gear since the EM can rotate in either direction. It was also found that the vehicle can be operated on only electric power in urban settings — represented by the NEDC driving cycle — if the battery is recharged through regenerative braking, and by the ICE the vehicle is stopped.

Fundamentals of Hybrid Power Trains Equipped with Planetary Transmission

2013 ◽  
pp. 267-321
Keyword(s):  
Electric Motor ◽  
Degrees Of Freedom ◽  
Combustion Engine ◽  
Point Of View ◽  
Electrical Machine ◽  
Power Train ◽  
Planetary Gears ◽  
Two Degrees Of Freedom ◽  
Hybrid Power ◽  
Planetary Transmission

Chapter 8 describes the most advanced hybrid power trains, which were generally depicted in Chapter 1. The presented figures consist of the two degrees of freedom planetary gears. It seems to be the best system of energy, split between the Internal Combustion Engine (ICE), the battery, and the electric motor, but unfortunately, it is also the most costly solution for its manufacture. This type of hybrid power train should be preferred as the best drive architecture composition from the technical point of view. For this reason, this chapter, in a detailed way, describes the features and the modeling approach to the planetary hybrid power train. Certainly, most attention is paid to the planetary two degrees of freedom gears, yet not only to them. Cooperating with the planetary gears, additional and necessary devices are considered. The role and modeling auxiliary drive components, such as the automatic clutch-brake device and mechanical reducers are discussed in this chapter. The design of electromechanical drives related to the planetary gear of two degrees of freedom controlled by the electric motor can be transformed to the purely electromagnetic solution. An example of the mentioned gear is given in the chapter. It is a complicated construction with the rotating stator of a complex, electrical machine requiring multiple electronic controllers. The increasing output torque of the electromechanical converter and its connection with the mechanical two degrees of freedom planetary gears are depicted as well.

scholarly journals Development of Transmission Systems for Parallel Hybrid Electric Vehicles

2019 ◽  
Vol 9 (8) ◽  
pp. 1538 ◽  
Author(s):  
Po-Tuan Chen ◽  
Ping-Hao Pai ◽  
Cheng-Jung Yang ◽  
K. David Huang
Keyword(s):  
Electric Vehicles ◽  
Hybrid Electric Vehicle ◽  
Hybrid Electric Vehicles ◽  
Combustion Engine ◽  
Gear Ratio ◽  
Parallel Hybrid ◽  
Matching Design ◽  
Hybrid Electric ◽  
Optimal Efficiency ◽  
And Performance

This study investigated the matching designs between a power integration mechanism (PIM) and transmission system for single-motor parallel hybrid electric vehicles. The optimal matching design may lead to optimal efficiency and performance in parallel hybrid vehicles. The Simulink/Simscape environment is used to model the powertrain system of parallel hybrid electric vehicles, which the characteristics of the PIM, location of the gearbox at the driveline, and design of the gear ratio of a gearbox influenced. The matching design principles for torque-coupled–type PIM (TC-PIM) parameters and the location of the gearbox are based on the speed range of the electric motor and the internal combustion engine. The parameters of the TC-PIM (i.e., k 1 and k 2 ) are based on the k ratio theory. Numerical simulations of an extra-urban driving cycle and acceleration tests reveal that a higher k r a t i o has greater improved power-assist ability under a pre-transmission architecture. For example, a k r a t i o of 1.6 can improve the power-assist ability by 8.5% when compared with a k r a t i o of 1. By using an appropriate gear ratio and k r a t i o , the top speed of a hybrid electric vehicle is enhanced by 9.3%.

Research on the Parameter Matching of Power Device of Hybrid Sanitation Vehicle

2014 ◽  
Vol 644-650 ◽  
pp. 471-474 ◽  
Author(s):  
Chuan Sheng Si
Keyword(s):  
Hybrid System ◽  
Electric Motor ◽  
Performance Indicators ◽  
Original Model ◽  
Power Device ◽  
Power Performance ◽  
Parallel Hybrid ◽  
Parameter Matching ◽  
Working Principle

In this paper, I introduced the working principle and drive type of hybrid cars, and parallel hybrid system was the driver type of hybrid sanitation vehicle. Combined with vehicle parameters and power performance indicators of the original model, I matched the appropriate engine, electric motor, battery and design the corresponding transmission.

CONVERTING THE VEHICLE BY REPLACING THE INTERNAL COMBUSTION ENGINE

2019 ◽  
pp. 29-35
Author(s):  
Oleksandr Gryshchuk ◽  
Volodymyr Hladchenko ◽  
Uriy Overchenko
Keyword(s):  
Internal Combustion Engine ◽  
Electric Vehicle ◽  
Electric Motor ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Environmental Safety ◽  
Environmental Conservation ◽  
Sales Forecasts ◽  
Financial Investments ◽  
Near Future

This article looks at some comparative statistics on the development and use of electric vehicles (hereinafter referred to as EM) as an example of sales and future sales forecasts for EM in countries that focus on environmental conservation. Examples of financial investments already underway and to be made in the near future by the largest automakers in the development and distribution of EM in the world are given. Steps are taken to improve the environmental situation in countries (for example, the prohibition of entry into the city center), the scientific and applied problem of improving the energy efficiency and environmental safety of the operation of wheeled vehicles (hereinafter referred to as the CTE). The basic and more widespread schemes of conversion of the internal combustion engine car (hereinafter -ICE) to the electric motor car (by replacing the gasoline or diesel electric motor), as well as the main requirements that must be observed for the safe use and operation of the electric vehicle. The problem is solved by justifying the feasibility of re-equipment of the KTZ by replacing the internal combustion engine with an electric motor. On the basis of the statistics collected by the State Automobile Transit Research Institute on the number of issued conclusions of scientific and technical expertise regarding the approval of the possibility of conversion of a car with an internal combustion engine (gasoline or diesel) to a car with an electric motor (electric vehicle), the conclusions on the feasibility of such conclusion were made. Keywords: electricvehicles, ecological safety, electricmotor, statistics provided, car, vehicle by replacing.

Powertrain Matching Based on Driving Cycle for Fuel Cell Hybrid Electric Vehicle

2013 ◽  
Vol 288 ◽  
pp. 142-147 ◽  
Author(s):  
Shang An Gao ◽  
Xi Ming Wang ◽  
Hong Wen He ◽  
Hong Qiang Guo ◽  
Heng Lu Tang
Keyword(s):  
Fuel Cell ◽  
Electric Vehicle ◽  
Cell Hybrid ◽  
Hybrid Electric Vehicle ◽  
Combustion Engine ◽  
Driving Cycle ◽  
Power Performance ◽  
Matching Method ◽  
Hybrid Electric ◽  
Fuel Cell Hybrid

Fuel cell hybrid electric vehicle (FCHEV) is one of the most efficient technologies to solve the problems of the energy shortage and the air pollution caused by the internal-combustion engine vehicles, and its performance strongly depends on the powertrains’ matching and its energy control strategy. The theoretic matching method only based on the theoretical equation of kinetic equilibrium, which is a traditional method, could not take fully use of the advantages of FCHEV under a certain driving cycle because it doesn’t consider the target driving cycle. In order to match the powertrain that operates more efficiently under the target driving cycle, the matching method based on driving cycle is studied. The powertrain of a fuel cell hybrid electric bus (FCHEB) is matched, modeled and simulated on the AVL CRUISE. The simulation results show that the FCHEB has remarkable power performance and fuel economy.

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