Exhaust Emission - Passenger Cars with Diesel EnginesCustomer RequirementsThe challenge for the HSDI Diesel engine is the achievement of future emission targets without deterioration in overall economy.
As known, the diesel engine has higher manufacturing costs than comparable gasoline engines. Therefore, engine developments must not lead to an accumulation of technologies, which would considerably increase production costs.
This is why development strategies are based on endeavours to increase the variability of technological elements that already exist or are developed further or to simplify or even save technological components upon the introduction of new ones.
![]() |
AVL Strengths- Synergies of AVL’s extensive know-how regarding simulation and testing of control systems in all areas of powertrain development
- Systematic DPF development process
- Experience of DPF application projects to SOP
- AVL In-house software tools for CFD simulation of filter loading
- Alternative and advanced combustion model for low emission
- Advanced Engine Control Strategies (Closed Loop Control)
- Wide collective experience from engine and powertrain development projects
Customer Benefits- Systematic approach to meet the requirements
- Quick solutions by synergy of simulation tools, test facilities and engineering experience
- Reduced time for DPF series application projects
- Low risk for series validation
- Production oriented solutions
- Know-how for advanced combustion and engine control strategy
- World wide support by local Tech-Centers
|
AVL ApproachA combination of conventional and alternative combustion together with a well matched exhaust gas aftertreatment system is currently seen as the most promising solution to achieve extremely severe emission legislation target. The necessary adaptation of charge conditioning and homogenisation is realised by optimising the geometrical layout of the engine as e.g. the compression ratio, the boosting system and the fuel injection system.
For implementing the alternative combustion system, AVL´s EmIQ system approach pursues the concept of using technological elements that already exist or are being developed for series application and to shift mixture formation as well as combustion to areas of improved homogenisation and low combustion temperatures. A cylinder pressure based closed loop combustion control is a necessity for a successful series application of alternative combustion as well as to improve the effects of series emission scatter.
The exhaust gas aftertreatment system is based on a diesel particulate filter which is already introduced into series production and if necessary a combination of particulate filter and DENOx catalyst. |
|
|
ServicesTools, Methods & TechnologiesFacilities & Resources |