German avia motors question

[Evgeny Velichko]

Hallo gents!

Some sourses say, that german twin-engined a/c ahd its own versions of engines. For example, they claim that Bf110E-2 had DB601P instead of DB601N. But it is strange for me, as I see sign "N" on those aircraft motor cowlings, and DB601N in original documents.

That sourse claim, that special engines for twin-engined a/c's had its own prop/engine ratio). Is it true?

DB601B-1 - Same as DB601A-1, different prop/engine ratio, 1:1.88 instead of 1:1.55.
DB601P - same as DB601N, different prop/engine ratio, 1:1.88 instead of 1:1.55.
DB601F - Same as DB601E, different prop/engine ratio, 1:1.875 instead of 1:1.685.
DB 605 B - Same as 605 A, different prop/gear ratio.

I always thought, that following is correct:

Bf110C&D - DB601A-1
Bf110E - DB601N (also some C, D got it)
Bf110F - DB601E
Bf110G - DB 605 A

[carlmu]

As far as I know the letter on the engine cowlings (at least for the Bf110) indicates the fuel and not the engine type. A stands for 87 octane B-3 fuel and N for 100 octane C2 or C3 fuel.
Carl

[Harold Lake]

Evgeny,
The "N" on Bf 109E and 110E cowlings was intended as a recognition aid for ground refueling services. It quickly informed the ground crew which aircraft had the DB 601N engine...and by extention...its corresponding special fuel requirement of C2 or C3.
Hal

[Evgeny Velichko]

Thanks gents!

Sorry, but I will be more concrete: what engine was installed on Bf110E-1/N or Bf110E-2/N - DB601N or DB601P?

[Harold Lake]

Evgeny,
According to Mtt's documents, all subtypes of the Bf 110 E-series (E-1, E-2 and E-3) were equipped with the DB 601N as standard equipment. There is no mention of any other engine for this series. Interestingly, at least one document lists the E-1 as the "Bf 110 E-1/N" even though the "N" was not necessary. Further, all Bf 110 series from the C-1 series up to, and including, the Bf 110 D-4 each had the DB 601A as standard.
Hal

[Revi16]

DB did build a 601P.