Si lencers with a sin gle and cen tral ex haust exit tube may be equipped with sup ple men tary si lenc
-
ers for ad di tional noise re duc tion (Fig. 7-2). For si lenc ers with side ex its the ad di tional bend ing
mo ment im posed on the si lencer will be dif fi cult to com pen sate.
Some in stal la tion sit u a tions do not ac com mo date for a sin gle ex haust, or the rout ing of four in de -
pend ent ex haust pipes gets to dif fi cult. In such cases a dual header ex haust sys tem may be used
(Fig.:7-3). Such de signs how ever may cre ate a higher level of back pres sure which will re duce
the power out put and in crease the op er at ing tem per a ture of the ex haust valves.
EGT sen sors (Type K) should be in stalled and con nected to the en gine in stru ments. The bore
should be ap prox i mately 50.0 mm be hind the flange. Make sure that there is ad e quate clear ance
to the pipes car ry ing in flam ma ble liq uid. More de tailed in for ma tion re gard ing the ex haust sys tem
can be ob tained from LIMBACH Flugmotoren.
A spoiler at the ex haust out let will avoid catch ing pres sure air, which would de crease the ef fi
-
ciency of the cool ing sys tem.
7.2 L 2400 EF
The ex haust sys tem of the L 2400 EF en gine dif fers from the ex haust sys tem of the air-cooled L
2400 EB1 en gine in the con nec tion di men sions, pipe di am e ters, vol ume of the pots, po si tion of
the out let and the rout ing of the pipes.
An EGT sen sor (Type K) must be in stalled at cyl in der num ber 4 and con nected to the en gine in -
stru ments. The bore should be ap prox i mately 50.0 mm be hind the flange
The in side di am e ter of the ex haust pipes should be a min i mum of 32.0 mm.
In struc tions for the am a teur air craft de signer can be found in the Oskar Ursinus Vereinigung in
Ger many.
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