Combustion Processes
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Selecting the appropriate engineering building blocks from the fields of charge motion, injection, ignition and combustion chamber geometry, IAV can provide the full range of expertise for implementing engine concepts of the next generation and beyond.
Single-Cylinder Test Engine
IAV GmbH continuously optimizes the development process in internal projects, making it ideally positioned to meet the demands in client projects and handle them with a high level of efficiency.
One example is IAV´s single-cylinder engine as an environment for developing new combustion processes. Given its modular structure, full mass balancing and the use of future production parts and machining processes, it is possible to accommodate a wide range of different requirements with one base engine.
Investigations into the transferability of results with regard to multiple-cylinder engines as well as adaptation of universal control unit and special measurement technology make the single-cylinder engine a valuable link in an efficient process chain.
Combustion Chamber Design
The task in concept development is to optimize the design of the combustion chamber as a means of satisfying the demands placed on the combustion process.
This produces the following focal aspects
- Piston head design
- Injector position
- Spark-plug position
- Flow and charge management
This development task is closely linked with flow measurement and simulation, design, engine testing and process computation.
Spray-Guided DI Spark-Ignition Engine
The spray-guided direct-injection combustion process offers the greatest potential for improving the fuel economy of spark-ignition engines. Charge stratification in the combustion chamber makes it possible to burn a very lean mixture.
Compared with conventional, homogeneous combustion processes with stoichiometric air/fuel ratio, fuel consumption can be cut by as much as 20% at part load. In addition to defining charge motion and cycle as well as residual gas guidance, realizing the injection system suitable for the spray-guided DI process is central to this concept. The link that is necessary between computation and test validation in DI development is achieved by incorporating exhaust gas aftertreatment.
