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• The new 1.5-l EA211 TGI evo

  Spark-ignition engines powered by e-gas (renewable CNG) represent a major element of the powertrain portfolio for sustainable, CO2-neutral mobility. Volkswagen and its partners therefore launched a CNG offensive last year aimed at significantly expanding Germany’s existing fuel station network and sustainably increasing the number of CNG vehicles on the market. Volkswagen is now presenting the new 1.5-l EA211 TGI evo, which is already ideally prepared for bivalent operation on liquid and gaseous fuel. Among the most notable factors are the engine’s high compression ratio and its efficient TSI Miller combustion cycle paired with VTG turbocharging.

• Internal Combustion Engine 4.0

  The new RDE specifications provoke an evolutionary leap in internal combustion engines. A new generation of drives with a holistic approach and significantly enhanced functionalities is needed to meet both current and future CO2 emission limits. In addition to electrification, further networking is also necessary to reach the “Internal Combustion Engine 4.0” described by AVL in this article.

• Diesel Injection System by Bosch with Closed-Loop Solenoid Valve Control

  Bosch has developed a new injection system for diesel engines. It operates with a closed-loop control and thus achieves very high precision in diesel injection. Using a piezo sensor in the injector and a new software architecture, the system measures and controls the exact duration of the individual fuel injection events. As this occurs on a continuous basis, fuel dosing and processing remain stable under real-driving conditions over the entire lifetime of the vehicle. This development thus makes an important contribution to the future competitiveness of diesel engines in passenger cars.

• Emission Concepts for Diesel Passenger Cars in India 2020

  India is closing the gap to regions with the most stringent emissions legislation by introducing Bharat Stage VI in advance. For passenger car diesel engines, this results in the need of exhaust aftertreatment regarding particulates and nitrogen oxides. A contribution to improved air quality in urban areas is made with its establishment. Other than in Europe, the traffic situation and system cost favor LNT-based systems for this purpose, as Graz University of Technoloy and AVL show in this article.

• LiteKS-4 piston system for friction reduction in modern gasoline passenger car engines

  The LiteKS 4 piston system from KS Kolbenschmidt offers significant advantages in terms of friction and weight thanks to its improved shape, thinner walls and a special aluminum alloy. Both in the driving cycle simulation and in tests with single-cylinder- and three-cylinder petrol engines, fuel savings of up to 6 % were achieved compared to the standard version.

• High Thermal Conductivity Valve Seat Inserts and Guides

  The thermal load of engine valves continues to increase. Most of the heat flowing from the valve into the cylinder head passes through the valve seats and guides. New materials and product developments with high thermal conductivity and thermal interface material show considerable potential for reducing the temperatures of valves. As a study by Federal-Mogul shows, these can be used in many ways to reduce component load, improve combustion and reduce emissions when designing viable future powertrains.

• Electrification in the powertrain mix 2025

  The automotive industry as well as the transport industry faces a big change. The demand for e-driven vehicles is getting higher, not just because of debates about “driving restriction within cities”, “fine dust” or “CO2”. But, the worldwide increase of urbanisation is the key driver for the alternative driven automobiles. Additionally, trucks and busses are an essential part of the city’s daily life. In this article Fuso and AVL show a possible future path.

• Allocation and evaluation of engine noise components

  The perceived noise quality of combustion engines is predominantly influenced by the occurrence and the characteristics of individual disturbing noise components. We have developed a methodology within the framework of a FVV project at the Institute for Combustion Engines of the RWTH Aachen University, which allows us to extract audible noise components so that they can be listened to separately, and the annoyance level of these components can be quantified automatically. Furthermore, the methodology allows the synthesis of a newly weighted total engine noise from the separated noise components for target value definition.

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