8.2. Engine Characteristic
8.2.1. Toroidal combustion mode (D1146/PU086)
The D1146 engine is operated in the toroidal combustion mode that was developed by this
company with AVL Co. Australia.
The feature of this mode in the fundamental structure is that there are combustion chambers
in the centers of piston heads and swirling passages in the cylinder heads.
This swirling passages when intake stroke generates the strong swirling motion in the com-
bustion chambers by giving the intake air a big moment, and when compression stroke, the
special piston’s shapes causing very complicated and distorted flows by means of eddy cur-
rent and squashed flows will make the air and fuel mix more smoothly.
Also, when explosion stroke, a considerable output increase came to be expected with the
accomplishment of nearly perfect combustion by the more smooth mixing of air and fuel
which was injected through multi-nozzles in the combustion chamber.
This engine by means of Toroidal Combustion Mode has the specific character such as quiet
and stable revolutional motion, multi-purpose application, economical fuel and oil consump-
tion, etc.
8.2.2. OMEGA combustion bowl (D1146T, P086TI)
The OMEGA combustion bowl is a unit
designed to perform high efficiency, low
emission combustion. As the rim around
the combustion bowl port of the upper of
the piston has been machined in a small-
er size than the interior of the combus-
tion bowl, strong swirl is produced in the
combustion bowl and strong squish flow
makes the fuel be mixed more sufficient-
ly with air.
Due to the application of OMEGA com-
bustion system and optimal utilization of
intake and exhaust port configuration
within the cylinder head, the D1146T and
POLUS P086TI generator diesel
engines discharge very low level of haz-
ardous exhaust gases such as smoke,
nitrogen oxide, hydrocarbon, or carbon
monoxide and thus ensure high perfor-
mance and low fuel consumption.
- 64 -
To Next Page
Loading...
Need help?
General
