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Viewing 1 to 30 of 9627
2017-10-02 ...
  • October 2-6, 2017 (8:00 a.m. - 8:00 p.m.) - Troy, Michigan
Training / Education Classroom Engineering Academies
This Engineering Academy covers a variety of vehicle noise control engineering principles and practices. Two specialty tracks are available: Vehicle Interior Noise and Powertrain Noise. While the Powertrain Noise track focuses on NVH issues generated by powertrain noise sources and the design strategies to minimize them, the Vehicle Interior Noise track focuses on the understanding and application of acoustical materials to optimize NVH in the passenger or operator compartment of a vehicle. Considerable attention is given to current measurement and instrumentation technologies and their effective use.
2017-10-02 ...
  • October 2-6, 2017 (8:00 a.m. - 8:00 p.m.) - Troy, Michigan
Training / Education Classroom Engineering Academies
This Engineering Academy covers a variety of vehicle noise control engineering principles and practices. Two specialty tracks are available: Vehicle Interior Noise and Powertrain Noise. While the Vehicle Interior Noise track focuses on the understanding and application of acoustical materials to optimize NVH in the passenger or operator compartment of a vehicle, the Powertrain Noise track focuses on NVH issues generated by powertrain noise sources and the design strategies to minimize them. Noise sources include engines, transmissions/transfer cases, accessories, exhaust, gears, axles, joints, and couplings.
2017-08-15 ...
  • August 15-17, 2017 (2 Sessions) - Live Online
Training / Education Online Web Seminars
This web seminar provides an in-depth overview of diesel engine noise including combustion and mechanical noise sources. In addition, the instructor will discuss a system approach to automotive integration including combining sub-systems and components to achieve overall vehicle noise and vibration goals.
2017-06-15 ...
  • June 15, 2017 (8:30 a.m. - 4:30 p.m.) - Grand Rapids, Michigan
  • November 6, 2017 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
The influx of different hybrid and electric vehicle configurations has brought about unique NVH challenges from a variety of sources. NVH refinement is an important aspect of powertrain development and the vehicle integration process. While developing the NVH behavior of the vehicle is critical to satisfy customer expectations, it is also important to consider the influence of reduced exterior noise levels on pedestrian safety.
2017-06-15 ...
  • June 15-16, 2017 (8:30 a.m. - 4:30 p.m.) - Grand Rapids, Michigan
Training / Education Classroom Seminars
The sound package materials for vehicle noise control seminar provides a detail and thorough analysis of three different classes of acoustical materials – namely absorbers, barriers, and dampers, how they are different from each other, and acoustical properties that materials should possess for optimum vehicle noise control. The seminar addresses new advances in acoustical materials, primarily in absorption materials that impact the vehicle acoustics. The seminar covers ways to evaluate the acoustical performance of these materials using different test methods, including material, component, and vehicle level measurements.
2017-06-05 ...
  • June 5-16, 2017 (6 Sessions) - Live Online
  • December 4-15, 2017 (6 Sessions) - Live Online
Training / Education Online Web Seminars
Finite Element Analysis (FEA) has been used by engineers as a design tool in new product development since the early 1990's. Until recently, most FEA applications have been limited to static analysis due to the cost and complexity of advanced types of analyses. Progress in the commercial FEA software and in computing hardware has now made it practical to use advanced types as an everyday design tool of design engineers. In addition, competitive pressures and quality requirements demand a more in-depth understanding of product behavior under real life loading conditions.
2017-04-21 ...
  • April 21, 2017 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • September 29, 2017 (8:30 a.m. - 4:30 p.m.) - Orlando, Florida
Training / Education Classroom Seminars
Brake noise is one of the highest ranked complaints of car owners. Grunts, groans, squeaks, and squeals are common descriptions of the annoying problem which brake engineers spend many hours trying to resolve. Consumer expectations and the high cost of warranty repairs are pushing the optimization of brake NVH performance. This course will provide you with an overview of the various damping mechanisms and tools for analyzing and reducing brake noise. A significant component of this course is the inclusion of case studies which will demonstrate how brake noise squeal issues have been successfully resolved.
2017-04-20 ...
  • April 20, 2017 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • September 28, 2017 (8:30 a.m. - 4:30 p.m.) - Orlando, Florida
Training / Education Classroom Seminars
Brake Noise, Vibration, and Harshness (NVH) is recognized as one of the major problems currently faced by the automotive manufacturers and their suppliers, with customers warranty claims of more than $100 million per year for each manufacturer. With increasing consumer braking performance expectations, automotive OEM’s and suppliers need the ability to predict potential problems and identify solutions during the design phase before millions of dollars have been spent in design, prototyping, and manufacturing tooling.
2017-04-19 ...
  • April 19-26, 2017 (3 Sessions) - Live Online
  • November 28-December 1, 2017 (3 Sessions) - Live Online
Training / Education Online Web Seminars
This web seminar will provide an introduction to the characteristics of sound waves, human perception of sound, sound and vibration measurements, measurement facilities, and various noise sources and noise control principles. It will include an overview of sound pressure, power, intensity, decibels, and frequencies. Practical examples will be used to familiarize participants with the acoustic fundamentals for solving noise and vibration problems and the associated solution principles.
2017-04-11
Journal Article
2017-01-9625
Souhir Tounsi
Abstract In this paper, we present a design and control methodology of an innovated structure of switching synchronous motor. This control strategy is based on the pulse width modulation technique imposing currents sum of a continuous value and a value having a shape varying in phase opposition with respect to the variation of the inductances. This control technology can greatly reduce vibration of the entire system due to the strong fluctuation of the torque developed by the engine, generally characterizing switching synchronous motors. A systemic design and modelling program is developed. This program is validated following the implementation and the simulation of the control model in the simulation environment Matlab-Simulink. Simulation results are with good scientific level and encourage subsequently the industrialization of the global system.
2017-04-05
Event
This session covers the development and application of numerical methods along with test correlation and optimization for NVH issues of full vehicle and vehicle subsystems. All structural components, subsystems and complete systems found in automotive vehicles will be considered. Topics include structure NVH, vibro-acoustics, wind noise and aeroacoustics, intake/exhaust and vehicle interior noise, sound quality etc.
2017-04-04
Event
The design, development, and testing of Valve Train and Variable Valve Actuation mechanisms, devices, and systems; and the impact and control of such systems on thermodynamics, combustion, fuel economy, emissions, noise and vibration, and performance.
2017-04-04
Event
This session addresses transmission noise, vibration, rattle issues and design solutions.
2017-04-04
Event
This session sets out to reflect the recent advances on the research, development and practices of Powertrain NVH treatment. The technical papers are of interest to powertrain system designers, testing specialists, NVH experts, and other individuals who evaluate and develop technologies to control powertrain NVH. The coverage includes: engine, engine subsystem and components noise and vibration; powertrain systems noise measurement and instrumentation; powertrain systems noise analysis.
2017-04-04
Event
This session sets out to reflect the recent advances on the research, development and practices of Powertrain NVH treatment. The technical papers are of interest to powertrain system designers, testing specialists, NVH experts, and other individuals who evaluate and develop technologies to control powertrain NVH. The coverage includes: engine, engine subsystem and components noise and vibration; powertrain systems noise measurement and instrumentation; powertrain systems noise analysis.
2017-04-04
Event
This session addresses transmission noise, vibration, rattle issues and design solutions.
2017-04-04
Event
This session sets out to reflect the recent advances on the research, development and practices of Powertrain NVH treatment. The technical papers are of interest to powertrain system designers, testing specialists, NVH experts, and other individuals who evaluate and develop technologies to control powertrain NVH. The coverage includes: engine, engine subsystem and components noise and vibration; powertrain systems noise measurement and instrumentation; powertrain systems noise analysis.
2017-04-04
Event
This session covers the development and application of numerical methods along with test correlation and optimization for NVH issues of full vehicle and vehicle subsystems. All structural components, subsystems and complete systems found in automotive vehicles will be considered. Topics include structure NVH, vibro-acoustics, wind noise and aeroacoustics, intake/exhaust and vehicle interior noise, sound quality etc.
2017-03-28
Technical Paper
2017-01-1050
George Nerubenko, Cyril Nerubenko
The study of dynamical performance and effectiveness of new proposed system of vibration dampers for any type of propulsion (Electric Motor Cars, Hybrid Vehicles and Petrol Engine Automobiles) is presented. Design and structure of proposed system is based on George Nerubenko US Patents 7,438,165 and 7,464,800 having the control system with self-tuning contour adjusted for all operational frequencies in running propulsion. The proposed system of vibration damper configurations having the simplest mechanical variable damping devices is observed. The proposed system of vibration dampers consists of combination of patented Bending / Torsional Vibration Dampers and Flywheels. The developed schemes would be applied for a design of all kinds of powertrains, transmissions, and drivelines successfully replacing the conventional vibration reduction tools.
2017-03-28
Technical Paper
2017-01-1052
Paul Zeng, Vincent Solferino, Mark Stickler
Engine ticking noise is one of the key failure modes in today’s direct injection (DI) engines. High ticking noise results in high Things Gone Wrong (TGW) index, which negatively affects customer satisfaction. In this paper, the root cause of the ticking noise from DI injector in direct mounting will be presented. Design principle such as injector impact force to cylinder head and DI injector isolator design with 2 stage stiffness is proposed.
2017-03-28
Technical Paper
2017-01-1072
Jelena Andric
Variable valve actuation (VVA) plays a promising role in supporting advanced combustion methods to meet increasingly stringent fuel efficiency and emission standards in modern vehicles. Much research has been done on VVA to exploit its potential for increasing the overall engine performance. Consequently, the use of VVA in internal combustion engines (ICE) has become more prevalent in recent past. Different flexible VVA technologies have been designed and manufactured to make it possible to control valve events and valve timing over the entire operating range of an engine. Therefore, it is of high interest to comprehensively understand the benefits of numerous VVA mechanisms that can be used to ensure the flexibility of the valve train system. Variable valve timing (VVT) technologies include early or late opening or closing time of the intake or exhaust valves. VVA combine any method of valve timing with variable lift, phase, and duration.
2017-03-28
Technical Paper
2017-01-1073
Robert Huber, Jan Clauberg
For the unfailing function of a timing chain drive the hydraulic chain tensioner is from great importance. It has to provide the necessary pretension and damping on the chain drive. For optimization and target orientated design detailed simulation models of the chain tensioner coffering different physical domains, i.e. mechanics and hydraulics, are needed. Object of this study is a new chain tensioner with two additional labyrinth sealings. In previous works, the dynamical flow behavior through the labyrinth sealings has to be determined by extensive CFD simulations or experimental measurements covering a lot of different parameters. Hence, the aim of this work is to derive a physical orientated model for labyrinth seals usable for dynamic simulation of chain tensioners within the framework of multi-body dynamics and hydraulics. To avoid time consuming CFD simulations or experiments the labyrinth seals can be characterized by only a few physical motivated parameters.
2017-03-28
Technical Paper
2017-01-1063
Tonghang Zhao, Xining Liu, Meng Yang, Yulei He, Hangsheng Hou
In contrast with conventional ICE vehicles, hybrid electric vehicles have their unique power flow structure and operating conditions, which complicates HEV’s NVH performance and design. At present, the HEV programs are mostly carried over from their corresponding conventional counterparts for many OEM’s. As a result, the total vehicle weight will increase 10% to 15% compared to their conventional version. However, the vehicle structural characteristics, such as hard points and chassis suspension stiffness, still remains similar to their conventional version. Therefore, even under the same operating conditions, HEV’s might develop more serious and complicated NVH problems. In this work, the structural and operating characteristics of an HEV is briefly explained first. Based on the principle of vibration and noise control methodology, the most effective NVH control strategies under typical HEV operating conditions are looked into and presented.
2017-03-28
Technical Paper
2017-01-0447
Zhe Li, Mike Dong, Dennis Harrigan, Michael Gardner
In gasoline Powertrain systems, the evaporative emission control (EVAP) system canister purge valve (CPV) can be actuated by pulse-width modulated (PWM) signals. The CPV is an electronically actuated solenoid. The PWM controlled CPV, when actuated, creates pressure pulsations in the system. This pulsation is sent back to the rest of the EVAP system. Given the right conditions, the fill limit vent valve (FLVV) inside the fuel tank can be excited. The FLVV internal components can be excited and produce noise. This noise can be objectionable to the occupants. Additional components within the EVAP system may also be excited in a similar way. This paper presents a bench test method using parts from vehicle’s EVAP system and other key fuel system components.
2017-03-28
Technical Paper
2017-01-0439
Joydeep Chatterjee, Yuva Kishore Vaddi, Chetan Prakash Jain
In urban driving conditions, the steering vibration feel plays a major role with the customer spending a significant amount of time behind the steering wheel. Considering the urban drive at Indian roads, 1000~1500rpm band becomes primary area of concern. In this paper, study has been conducted to define the target areas as well as its achievement in reference to given driving pattern on a Front Wheel Powered Passenger car for steering vibration feel. During the concept stage of vehicle development, a target characteristic of steering wheel vibration was defined based on the competitor model benchmarking and prior development experience. A correlated CAE model was prepared to evaluate the modification prior to prototype building and verification. Vibration level in all 3 degrees of freedom at the steering wheel location was measured in the initial vehicle prototypes and target areas of improvement identified.
Viewing 1 to 30 of 9627

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