From customer requirements to the optimal hybrid powertrain – High-performance hybrid transmission for future plug-in hybrid drives

2018 ◽  
pp. 83-92
Author(s):  
J. Müller ◽  
J. Liebold ◽  
C. Danzer
Keyword(s):  
High Performance ◽  
Customer Requirements ◽  
Hybrid Powertrain ◽  
Hybrid Transmission

scholarly journals Optimal Powertrain Design through a Virtual Development Process

2018 ◽  
Vol 9 (1) ◽  
pp. 11 ◽  
Author(s):  
Hendrik Piechottka ◽  
Ferit Küçükay ◽  
Felix Kercher ◽  
Michael Bargende
Keyword(s):  
Decisive Role ◽  
Pollutant Emission ◽  
Customer Requirements ◽  
Hybrid Powertrain ◽  
Tool Chain ◽  
Emission Regulations ◽  
Market Requirements ◽  
Individual Market ◽  
The Individual ◽  
Electrical Components

The ever more stringent global CO2 and pollutant emission regulations imply that the optimization of conventional powertrains can only provide partial reductions in fleet emissions. Vehicle manufacturers are therefore responding by increasing the electrification of their powertrain portfolios. This in turn, results in higher levels of electrification of the individual powertrain units. The increase in electric power leads to a comprehensive range of possible technologies—from 48 V mild hybrids to pure electric concepts. The powertrain topology and the configuration of the electrical components of a hybrid powertrain play a decisive role in determining the overall efficiency when considering the individual market requirements. Different hybrid functions as well as performance and customer requirements are determined from statutory cycles and in customer operation. A virtual development chain that is based on MATLAB/Simulink then represents the steps for the identification, configuration, and evaluation of new electrified powertrains. The tool chain presented supports powertrain development through automated conceptualization, design, and evaluation of powertrain systems and their components. The outcome of the entire tool chain is a robust concept decision for future powertrains. Using this methodical and reproducible approach, future electrified powertrain concepts are identified.

scholarly journals Experimental Setup to Characterize Shift Time for High Performance Hybrid Transmissions

2018 ◽  
Author(s):  
Daniel S. Dorsch ◽  
Justin Carrus ◽  
Zongying Xu ◽  
Derrick Xu ◽  
Amos G. Winter ◽  
...  
Keyword(s):  
Electric Drive ◽  
Electric Motor ◽  
High Performance ◽  
Fuel Efficiency ◽  
Rotational Inertia ◽  
Experimental Setup ◽  
Motor Speed ◽  
Hybrid Architectures ◽  
Speed Difference ◽  
Hybrid Transmission

Hybrid vehicles are increasingly common due to fuel efficiency regulations in place worldwide. High performance hybrids have typically been designed with a focus on improving performance, rather than the combination of both performance and efficiency. In order to improve efficiency of high performance cars, new hybrid architectures are necessary. When incorporating an electric motor, careful focus on operational modes allows for removal of certain elements, such as the reverse gear. Additionally, installing an electric motor directly coupled to the transmission without a clutch gives performance benefits, but requires detailed control of motor speed and novel methodology for shifting. In this paper, the design of an experimental setup for the electric drive in a high performance car hybrid transmission is presented. This architecture allows for characterization of synchronizer behavior during two different shifting methodologies. The first methodology is synchronizing a large rotational inertia with a small shaft speed difference (this differs from a gear shift in a traditional transmission with a large speed difference but small inertia). This situation is encountered when coupling an electric motor to the drivetrain, as the inertia of the electric motor is relatively large compared to a transmission layshaft, but the speed difference is small. The second is testing shifting of a synchronizer where dog tooth engagement happens immediately, with no friction cone to match the speed. This type of shifting is possible with precise electric motor speed control, sensing of the dog tooth position, and fast actuation. This methodology eliminates the need for a friction cone in the synchronizers, while maintaining fast gearshifts for performance driving. Our experimental setup for the electric drive in a hybrid transmission will be used to characterize synchronizer performance with these new shifting methodologies. The insights gained from this setup will aid in designing advanced hybrid architectures.

scholarly journals Design of a Clutchless Hybrid Transmission for a High-Performance Vehicle

2015 ◽  
Author(s):  
Chad L. Jacoby ◽  
Young Suk Jo ◽  
Jake Jurewicz ◽  
Guillermo Pamanes ◽  
Joshua E. Siegel ◽  
...  
Keyword(s):  
High Performance ◽  
Power Flow ◽  
Combustion Engine ◽  
Performance Requirements ◽  
Wide Range ◽  
Friction Clutch ◽  
Hybrid Transmission ◽  
And Performance ◽  
Electrical Motors ◽  
Operational Modes

There exists the potential for major simplifications to current hybrid transmission architectures, which can lead to advances in powertrain performance. This paper assesses the technical merits of various hybrid powertrains in the context of high-performance vehicles and introduces a new transmission concept targeted at high performance hybrid applications. While many hybrid transmission configurations have been developed and implemented in mainstream and even luxury vehicles, ultra high performance sports cars have only recently begun to hybridize. The unique performance requirements of such vehicles place novel constraints on their transmissions designs. The goals become less about improved efficiency and smoothness and more centered on weight reduction, complexity reduction, and performance improvement. To identify the most critical aspects of a high performance transmission, a wide range of existing technologies is studied in concert with basic physical performance analysis of electrical motors and an internal combustion engine. The new transmission concepts presented here emphasize a reduction in inertial, frictional, and mechanical losses. A series of conceptual powertrain designs are evaluated against the goals of reducing mechanical complexity and maintaining functionality. The major innovation in these concepts is the elimination of a friction clutch to engage and disengage gears. Instead, the design proposes that the inclusion of a large electric motor enables the gears to be speed-matched and torque-zeroed without the inherent losses associated with a friction clutch. Additionally, these transmission concepts explore the merits of multiple electric motors and their placement as well as the reduction in synchronization interfaces. Ultimately, two strategies for speed-matched gear sets are considered, and a speed-matching prototype of the chosen methodology is presented to validate the feasibility of the proposed concept. The power flow and operational modes of both transmission architectures are studied to ensure required functionality and identify further areas of optimization. While there are still many unanswered questions about this concept, this paper introduces the base analysis and proof of concept for a technology that has great potential to advance hybrid vehicles at all levels.

scholarly journals RESEARCHING OF INTEGRATED HYBRID POWERTRAIN FOR MOTORCYCLES WITH ELECTRIC MOTOR AT THE REAR WHEEL

2018 ◽  
Vol 1 (31) ◽  
pp. 49-57
Author(s):  
Ha Thanh Ngo ◽  
Tai Tan Phan ◽  
Minh Tan Tang ◽  
Banh Thanh Huynh
Keyword(s):  
Air Pollution ◽  
Control System ◽  
Environmental Pollution ◽  
Hybrid System ◽  
Electric Motor ◽  
Rear Wheel ◽  
Hybrid Powertrain ◽  
Dc Motors ◽  
Hybrid Transmission ◽  
Operation Control

Today, motorcycle is a popular means of transportation in Vietnam, because of its flexibility and suitability for the transportation infrastructure of the country. However, it also significantly contributes to the cause of air pollution. Therefore The installation of electric motor on motorcycle to reduce environmental pollution is a practical and economical solution. This paper presents the design of the hybrid powertrain and the operation control system between the two sources of power from traditional engines and DC motors on Honda Wave 110cc. Following that, the paper experiments, analyze and evaluate this developed hybrid system, and to propose solutions to improvement in the efficiency of the hybrid transmission system on motocycle.

Design and Development of a Parallel Hybrid Powertrain for a High Performance Sport Utility Vehicle

2005 ◽  
Author(s):  
A. Singer-Englar ◽  
R. Kamisky ◽  
P. Erickson ◽  
Andrew A. Frank ◽  
W. Allan ◽  
...  
Keyword(s):  
High Performance ◽  
Sport Utility Vehicle ◽  
Design And Development ◽  
Hybrid Powertrain ◽  
Parallel Hybrid ◽  
Utility Vehicle

Investigation of the power losses of the hybrid transmission DE-REX based on modeling and measurement

2019 ◽  
Vol 233 (14) ◽  
pp. 3646-3657
Author(s):  
Ye Shen ◽  
Andreas Viehmann ◽  
Stephan Rinderknecht
Keyword(s):  
Experimental Data ◽  
Electric Vehicles ◽  
Power Loss ◽  
The Novel ◽  
Power Losses ◽  
Test Rig ◽  
Hybrid Powertrain ◽  
Range Extender ◽  
Hybrid Powertrains ◽  
Hybrid Transmission

Electric and hybrid powertrains are developed to reduce the energy and fuel consumption of vehicles. Recently, multi-speed transmission systems were discussed for further reduction of the energy consumption of electric vehicles. Therefore, analyzing the power losses of such transmissions is of interest. In this paper, the novel powertrain concept DE-REX (Two-Drive-Transmission with Range-Extender) and the experimental investigation of its overall power losses is first introduced. A method is then developed to model and analyze the power losses of this hybrid transmission based on experimental data. After the validation of the method, the overall power loss model is eventually applied to estimate the power losses of the transmission at other driving modes, which were not measured on the test rig. The method is used to understand the characteristics of power losses inside the transmission in a hybrid powertrain and to optimize powertrain power losses in future.

High-performance Hybrid Transmission for Future Plug-in Hybrid Drives

ATZ worldwide ◽  
2016 ◽  
Vol 118 (10) ◽  
pp. 16-21 ◽  
Author(s):  
Jörg Müller ◽  
Jens Liebold ◽  
Christoph Danzer
Keyword(s):  
High Performance ◽  
Hybrid Transmission

Moxtek, Inc.

2013 ◽  
Vol 21 (S1) ◽  
pp. 12-12 ◽  
Keyword(s):  
Elemental Analysis ◽  
High Performance ◽  
Low Energy ◽  
Hazardous Substance ◽  
X Rays ◽  
Customer Requirements ◽  
X Ray ◽  
Performance Quality ◽  
Thin Polymer ◽  
Miniature Portable

Moxtek is the leading manufacturer of nano-optical and X-ray components, including high performance X-ray windows for demanding applications. AP3 ultra-thin polymer windows offer the highest transmission of low energy X-rays. Moxtek DuraBeryllium® windows are highly reliable, are resistance to moisture and harsh chemicals, and are available in thicknesses down to 8 μm. Moxtek also provides window solutions for sealed and flow proportional counters. Moxtek X-ray products (X-ray windows, X-ray JFETs, miniature/portable X-ray sources, X-ray detectors) enable compact handheld and benchtop elemental analysis for positive material identification. Moxtek products are used in various EDXRF systems for environmental screening, for hazardous substance analysis, and for sorting and recycling. Moxtek X-ray products are critical for optimal elemental analysis in electron microscopy, especially for low-Z elements. Moxtek strives to deliver products and services that meet or exceed customer requirements for performance, quality, and value.

A High Performance Energy Analyzer for Use in Electron Scanning Microscopy

1969 ◽  
Vol 27 ◽  
pp. 14-15
Author(s):  
A. V. Crewe ◽  
M. Isaacson ◽  
D. Johnson
Keyword(s):  
High Performance ◽  
Vertical Plane ◽  
Median Plane ◽  
Electron Gun ◽  
Uniform Field ◽  
Loss Mechanism ◽  
Electron Scanning Microscopy ◽  
Sector Type ◽  
Double Focusing ◽  
Electron Energy Loss

A double focusing magnetic spectrometer has been constructed for use with a field emission electron gun scanning microscope in order to study the electron energy loss mechanism in thin specimens. It is of the uniform field sector type with curved pole pieces. The shape of the pole pieces is determined by requiring that all particles be focused to a point at the image slit (point 1). The resultant shape gives perfect focusing in the median plane (Fig. 1) and first order focusing in the vertical plane (Fig. 2).

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