By IMechE
This publication provides the papers from the newest convention during this winning sequence on gasoline injection platforms for inner combustion engines. it is crucial for the car to proceed to fulfill the calls for of the trendy environmental time table. which will excel, brands needs to learn and enhance gas platforms that warrantly the easiest engine functionality, making sure minimum emissions and greatest revenue. The papers from this targeted convention concentrate on the most recent know-how for cutting-edge procedure layout, characterisation, size, and modelling, addressing all technological elements of diesel and gas gas injection platforms. issues variety from primary gas spray thought, part layout, to results on engine functionality, gas economic system and emissions.
- Presents the papers from the IMechE convention on gasoline injection platforms for inner combustion engines
- Papers concentrate on the newest know-how for state of the art approach layout, characterisation, size and modelling; addressing all technological points of diesel and fuel gas injection systems
- Topics diversity from basic gasoline spray conception and part layout to results on engine functionality, gas economic system and emissions
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Additional info for Fuel Systems for IC Engines
Example text
The simulation results with the IAV mixer are not yet available, but modeling is in preparation. Comparing the distributions for OP2 and the IAV mixer (figure 20), again a pronounced droplet concentration along the pipe axis is visible over the range from 22 mm to 85 mm. SOI; 85 mm Figure 20: Doser 2 at OP2, comparison of the production mixing device (left) to the IAV mixer (right) The UWS is additionally distributed on an outer ring close to the pipe wall. Especially for the distance of 85 mm, substantially more drops are visible within the light sheet plane in comparison to the production mixer.
However, these drops are the residual ones which did not impinge on the pipe wall due to the wide spray angle of doser 2. Again, the measurement is satisfactorily consistant with the simulation results. SOI Figure 19: Doser 2 @ OP1 and 22 mm downstream of the mixer 37 the production mixer, comparably few droplets passed its blades. The drop size appears somewhat smaller due to secondary breakup and the remaining drops are at the bottom left side or at boundary regions. With the second mixer there was an increase in droplet number and droplet size.
These injection system parameters interact with other engine parameters such as air delivery, charge motion, etc. and determine the mixture preparation and ultimately the combustion process and the emission characteristics. It is generally anticipated that the shorter time for mixture preparation and incylinder spray-wall interactions are responsible for the higher particulate emission of GDi engine powered vehicles compared to MPFI fueled Gasoline engines as illustrated in Figure 1. Fuel system architectures combining both port fuel injection for low load and direct injection for higher loads are under consideration in order to comply with the discussed future PM legislation.