Vedeneyev M-14P, Maintenance Manual, Page: 245 / 381

CARBURETOR AK-14P - DESCRIPTION AND OPERATION
1. GENERAL
The AK-14P carburetor is intended to be mounted on a four-stroke radial nine-cy-linder air-cooled engine, type
M-14P.
The carburetor is of a floatleas, single-barrel type. To ensure engine pickup, the carburetor features mechanical
and air acceleration pumps; an altitude control is provided to adjust mixture quality in climbing.
The carburetor has no heating devices.
Air delivered to the cylinders is heated in a special heater arranged upstream of the carburetor.
The carburetor functional diagram is given in Pig. 1.
2. DESCRIPTION
2.1. SPECIFICATIONS
Type
Diaphragm, floatless
Operating position Arbitrary
Mixing barrel diameter 70 mm
Venturi diameter 64 mm
Throttle idle setting angle (from completely open position) 11°
Carburetor inlet fuel pressure:
At main ratings
(0.35±0.15) kgf/cm2
At idle Not less than 0.15 kgf/cm2
Suction jet diameter 1.3 to 2.0 mm
Idle air jet diameter 2.2 mm
Inlet air jet diameter 2.5 mm
Acceleration pump fuel jet diameter 0.9 to 1.4 mm
Fuel jet diameter
3.2 to 3.3 mm
Mass (less fuel, oil and shipping fixtures) Up to 5 kg
Operating temperatures:
Carburetor inlet air From 10 to 45 °C
Ambient From minus 50 to+45 °C
Carburetor inlet fuel From minus 50 to+45 °C
Working fluid Gasoline B91/115
2.2. CONSTRUCTION
The AK-14P carburetor comprises the following main units:
Carburetor body.
Pressure regulator.
Link mechanism.
Throttle mechanism.
Metering system.
Mechanical acceleration pump.
Idle needle.
Fuel line.
Altitude control.
Air manifold.
Air acceleration pump.