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Viewing 1 to 30 of 4255
2017-04-04
Event
This session is focused on vehicle dynamics and controls using modeling and simulation, and experimental analysis of passenger cars, heavy trucks, and wheeled military vehicles. This session addresses active and passive safety systems to mitigate rollover, yaw instability and braking issues; driving simulators and hardware-in-the-loop systems; suspension kinematics and compliance, steering dynamics, advanced active suspension technologies; and tire force and moment mechanics.
2017-04-04
Event
With a mandate in Europe for Autonomous emergency braking systems, there is a development happening with radar and camera based systems to do collision mitigation. The challenges include robust object tracking, stationary object detection, reactions for false positives etc. The developments and challenges in the collision mitigation technology will be discussed in this session.
2016-11-14 ...
  • November 14-16, 2016 (8:00 a.m. - 5:00 p.m.) - Greer, South Carolina
Training / Education Classroom Seminars
While a variety of new engineering methods are becoming available to assist in creating optimal vehicle designs, subjective evaluation of vehicle behavior is still a vital tool to deliver desired braking, handling, and other dynamic response characteristics. In order to better prepare today’s engineer for this task, this course offers twelve modules devoted to key the fundamental principles associated with longitudinal and lateral vehicle dynamics.
2016-11-07 ...
  • November 7-9, 2016 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
Increased public pressure to improve commercial truck safety and new stopping distance regulations have intensified the need to better understand the factors influencing heavy vehicle braking performance. To assist individuals and their organizations in preparing for these new truck braking standards, this seminar focuses attendees on understanding medium-duty hydraulic brake systems and heavy-duty air brake systems and how both systems' performance can be predicted, maintained and optimized.
2016-11-02 ...
  • November 2-4, 2016 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
Hydraulic brake systems, one of the most important safety features on many road vehicles today, must meet manufacturer and customer requirements in addition to Federal Motor Vehicle Safety Standards. This course will analyze automotive braking from a system's perspective, emphasizing legal requirements as well as performance expectations such as pedal feel, stopping distance, fade and thermal management. Calculations necessary to predict brake balance and key system sizing variables that contribute to performance will be discussed.
2016-10-13 ...
  • October 13-14, 2016 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
Once reserved for high-end luxury vehicles, electronic brake control systems are now required standard equipment on even the most inexpensive cars and trucks. Today, nearly every new vehicle benefits from the optimized braking, enhanced acceleration, or improved stability that these systems provide. This comprehensive seminar introduces participants to the system-level design considerations, vehicle interface requirements, and inevitable performance compromises that must be addressed when implementing these technologies. The seminar begins by defining the tire-road interface and analyzing fundamental vehicle dynamics.
2016-09-30 ...
  • September 30, 2016 (8:30 a.m. - 4:30 p.m.) - Scottsdale, Arizona
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.
2016-09-29 ...
  • September 29, 2016 (8:30 a.m. - 4:30 p.m.) - Scottsdale, Arizona
Training / Education Classroom Seminars
The choice of brake friction materials varies per application, but each must have the appropriate coefficient of friction and be able to disperse large amounts of heat without adversely effecting braking performance. This seminar will provide an introduction to brake lining raw materials and formulation, manufacturing, quality control and testing. The course covers the critical elements that must be reviewed before arriving at a lining selection decision. Different classes of friction material and their use will be defined.
2016-09-29 ...
  • September 29, 2016 (8:30 a.m. - 4:30 p.m.) - Scottsdale, Arizona
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.
2016-09-27
Technical Paper
2016-01-8042
Danna Jiang, Ying Huang, Xiaoyi Song, Dechun Fu, Zhiquan Fu
In order to enhance vehicle safety and improve the braking performance, commercial vehicles are usually equipped with electronically braking systems (EBS). But the system is very complex not only because there are many functionalities such as Anti-lock Braking (ABS) and Electronic Stability Control (ESC), but also many electro-pneumatic components such as front axle module and rear axle module. What’s more, there are many different EBSs With different compositions for different vehicle types. These factors bring different requirements for the test rig. This paper describes a uniform Hardware-In-the-Loop (HIL) simulation test rig for the different types of the EBSs. It is also applied to both modular testing and integrated testing. This test rig includes a vehicle dynamic model, a real-time simulation platform, an actual brake circuit and the EBS system under test. Some special things are as follow. Firstly, the vehicle dynamic model is a highly parameterized commercial vehicle model.
2016-09-27
Technical Paper
2016-01-8079
Zhiwei Zhang, Gangfeng Tan, Mengying Yang, Zhongjie Yang, Mengzuo Han
Abstract: Hydraulic retarder is an important auxiliary braking device. Because of its large braking torque in high speed, smooth braking, low noise, long service life and small size, it is widely used on modern vehicles. Transmission fluid of traditional hydraulic retarder is cooled by engine cooling system, which is a waste of vehicle energy to discharge the exhausted heat directly. On account of the working characteristics of hydraulic retarder, this study designs a set of waste heat recovery system based on Organic Rankine Cycle(ORC). Under the premise of ensuring stable performance of hydraulic retarder, waste heat energy in transmission fluid is recycled to supplement energy requirements for cooling system. First of all, the principle model of 100:1 is established for thermal power of D300 retarder. Then through theoretical calculations, components' structural parameters of ORC are determined.
2016-09-27
Journal Article
2016-01-8010
M. Kamel Salaani, David Mikesell, Chris Boday, Devin Elsasser
Rear-end collisions account for roughly 20% of all police-reported heavy truck crashes in 2004, and the heavy truck was the striking vehicle in 60% of these cases. In light of this, Automatic Emergency Braking (AEB), an electronically-assisted means of avoiding or mitigating frontal collision, could have significant safety benefits. Field testing of such systems using real vehicles is necessarily limited by the danger and expense inherent in crash-imminent scenarios, especially when the system is not designed to eliminate all collisions but rather reduce their severity. Hardware-in-the-Loop (HiL) systems have the potential to enable safe and accurate laboratory testing and evaluation of AEB systems. This paper describes the setup and experimental validation of such a HiL system.
2016-09-27
Journal Article
2016-01-8106
Sameer Kolte, Ananth Kumar Srinivasan, Akilla Srikrishna
As we move towards the world of autonomous vehicles it becomes increasingly important to integrate several chassis control systems to provide the desired vehicle stability without mutual interference. The principles for integration proposed in existing technical literature are majorly centralized which are not only computationally expensive but does not fit the current supplier based OEM business model. An Automotive OEM brings multiple suppliers on-board for developing the Active Safety systems considering several factors such as cost, quality, time, ease of business etc. When these systems are put together in the vehicle they may interfere with each other’s function. Decoupling their function results in heavy calibration causing performance trade-offs and loss in development time.
2016-09-27
Technical Paper
2016-01-8112
Jorge Leon, Jose M. Garcia, Mario J. Acero, Andres Gonzalez, Geng Niu, Mahesh Krishnamurthy
Electric motors have energy efficiency and performance advantages over traditional internal combustion engines. Nevertheless, when used for transportation, they have limited ranges due to the state of current energy storage technologies. In order to improve efficiency and increase the range of operation of electric vehicles, complementary energy regeneration systems can be used. A hydraulic energy recovery system is proposed to be used as a regenerative system for supplementing energy storage. This system consists of a hydraulic accumulator, a low pressure reservoir and a hydraulic pump/motor. The pump/motor device transforms kinetic energy into hydraulic energy during breaking, to move the hydraulic fluid from the low pressure reservoir to the hydraulic accumulator. This energy can later can be used to propel the vehicle. The proposed system is particularly useful for vehicles in heavy start-stop traffic and public transportation.
2016-09-27
Technical Paper
2016-01-8114
Massimiliano Ruggeri, Pietro Marani, Michele Selvatici
Stationary brake is a very important and safety related function in many machine types. The new transmissions and the X-by wire systems increase the role of stationary brake criticality, as it is also an emergency brake, and it’s often used to hold the vehicle while the transmission is not locking the wheel in all stationary condition and sometimes if it is faulty. As an example, dual clutch and power-shift transmission gear systems, as well as hydrostatic transmissions are often unable to hold the vehicle stopped and the function is provided by the stationary brake. Due to the main need of having the brake actuated when vehicle is stopped, without any hydraulic and electric active power source, the brake configuration is normally a “negative” configuration, but this obviously lead to the brake actuation when de-energized, even in case of fault occurrence.
2016-09-27 ...
  • September 27-30, 2016 (3 Sessions) - Live Online
Training / Education Online Web Seminars
Designing a brake system requires the ability to balance a multitude of parameters against the required tradeoffs of system weight, system cost, and system performance. Understanding the basic fundamentals of how each brake component attribute contributes to the overall Force vs Deceleration behavior of the vehicle is critical to the design and release of a safe, legal and optimized system for today’s vehicles. Brake balance also is a contributing factor to other chassis control and safety systems, such as regenerative braking, ABS, and electronic brake distribution (EBD).
Viewing 1 to 30 of 4255

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