VARIABLE VALVE ACTUATION: DESIGN AND PERFORMANCE IMPACT ON ADVANCED POWERTRAINS
Engine valvetrain systems have become more capable and increasingly more compact in the quest to improve efficiency. Valve control plays a strong role in a number of key areas: turbocharger systems, allowing for better optimization matching across wide engine operating flows; enabling advanced combustion strategies where control over the charge mass and temperature are important; and cold start, where valve timing can be extremely effective for engine warm up compared with other strategies that rely on additional fueling. This seminar covers the range of Variable Valve Actuation technologies present in the market, their operation principles, and their effect on engine performance. Both gasoline and diesel applications will be covered including how they impact the in-cylinder combustion as well as the aftertreatment. You will have the opportunity to perform hands-on exercises to examine the effects of the engine valve profiles on performance. LEARNING OBJECTIVES By attending this seminar, you will be able to: • Describe and differentiate the variable valve actuation technologies present in the automotive industry • Describe the defining features of each of these technologies, their requirements for engine design layouts, required actuators, lube oil, and need for control and ECU interface • Apply basic tools to gage the thermodynamic impact effected by varying the valve profiles: impact on pumping efficiency, resulting charge mass trapped in cylinder, estimated bulk and adiabatic flame temperatures • Articulate the contribution of valve timing and control over the engine performance and aftertreatment in modern engines in the context of today’s emissions standards • Describe the limitations of current technologies towards more efficient and cleaner engines and the future role of valve actuation and its integration aspects with other advanced powertrain components WHO SHOULD ATTEND This seminar is designed for engineers, managers, and other technical personnel from OEMs and support industries concerned with the design and development of optimized diesel and spark ignition engine systems, including calibration, performance, fuel economy and emissions for passenger car, light truck and heavy duty engines. It will be particularly interesting to diesel engineers who will likely adopt some of the technologies developed in the gasoline sector for further improvements in emissions control and gains in fuel economy.
“This seminar was an excellent opportunity to get valuable insight into the latest technologies developing in the auto industry.”
Abhijit Ramuhalli Team Lead, Engine Calibration Navistar Inc.
3 ways to get a no-obligation price quote to deliver a course to your company Call SAE Corporate Learning at +1.724.772.8529 | Fill out the online quote request at sae.org/corplearning Email us at Corplearn@sae.org 44
Made with FlippingBook - professional solution for displaying marketing and sales documents online