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There is also an increased focus on ensuring emissions under real world driving conditions are reduced while meeting customer expectations for power and agility.
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Diesel engines, especially in Europe, are critical to allow manufacturers to meet CO 2 targets and they continue to evolve with increased efficiency and reduced emissions. The internal combustion engine will continue to be a critical component of the vehicle’s drivetrain for at least the next decade.
#Exhaust extensions for ic engines full version#
Please log in to view the full version of this article ( subscription required). The conference was at its usual attendance level of about one thousand delegates. A number of technical papers were also presented dealing with such issues as new engine design, engine components, exhaust aftertreatment, and powertrain electrification. Representatives of higher level management from several European car manufacturers discussed the challenges faced by the world’s automotive industry-driven largely by existing and future CO 2 emission and fuel economy regulations-and their impacts on powertrain development. As was the case in previous years, the main focus was on light-duty gasoline and diesel engine technology. Matthias Thewes, Fabian Hoppe, Henning Baumgarten, Jörg Seibel (2015) “Water Injection for Gasoline Combustion Systems” MTZ worldwide Volume 76, Issue 2, pp 10-15 doi: 10.The Vienna Motor Symposium was held for the 37 th time on April 28-29, 2016 in the Hofburg Conference Center in Vienna, Austria.
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Click to enlarge.įabian Hoppe, Matthias Thewes, Henning Baumgarten, Jürgen Dohmen (2015) “Water injection for gasoline engines: Potentials, challenges, and solutions” International Journal of Engine Research doi: 10.1177/1468087415599867įEV Spectrum: “ Gasoline Combustion Beyond 2020” Influence of the injected water quantity on stoichiometric combustion with cooled EGR at n = 2,000 rpm and IMEP = 14.5 bar. Despite the high compression ratio, knock was limited. In an engine with a compression ratio of 13.5:1, studies of condensate injection in combination with the Miller cycle and cooled external EGR was evaluated at IMEP = 14.5 bar at n = 2,000 rpm. This operation principle allows the entire injected condensate to be recycled. They changed the condensation concept to allow utilization of the condensate from the entire exhaust gas stream and not only EGR condensate. Subsequently, the engineers extended the concept to include direct injection of the condensate into the cylinder. There is also a possible extension of this concept, in which the condensed water from the air conditioning system can be added to a buffer tank from which the condensate is extracted and fed into the engine.įEV began in 2014 with initial investigations on a turbocharged gasoline direct injection (GDI) engine that featured PFI injection of the EGR condensate. ( Earlier post.)įEV’s system concept offers potential synergies which can be further enabled by exhaust heat recovery. Rolf Bulander, member of the board of management of Robert Bosch GmbH and chairman of the Mobility Solutions business sector, in his talk on powertrain optimization at the 2015 Vienna Motor Symposium. Under grueling race conditions, when the vehicle spends a lot of time operating at full throttle, the water tank is topped up every time the vehicle is refueled.īosch also is developing a water injection (WI) system for spark ignition engines in partnership with a pilot customer, said Dr. The water injection system in the BMW M4 MotoGP Safety Car draws water from a five-liter tank in the trunk. The injection of water into engine cylinders produces a cooling effect that boosts power and torque, particularly when operating at or near full throttle, while at the same time reducing fuel consumption and emissions.īMW has already implemented a water injection system in its BMW M4 MotoGP Safety Car, and, at the recent BMW Group Innovation Days 2015 event, presented the technology in a prototype of a model from the BMW core brand powered by a latest-generation three-cylinder gasoline engine.