BMK-130M

PURPOSE, POSSIBILITIES:
Trailer powerboat BMK-130M is designed to tow ferries, to transfer floating bridges, to drop anchors, for the exploration of the river and performing various tasks with hardware and maintanence of the river crossings.

DEVELOPMENT, PRODUCTION:
The boat is based on a tug-boat BMK-130.

MODIFICATIONS:
BMK-130ML

TECHNICAL DESCRIPTION:
The boat is equipped with teh set-row two-stroke marine engine YAZ-204A-sr-2,5 with single-closed-cooling system. Gearbox replaced by a reverse-gear.  The water pump is installed instead of fan.

Reverse gear is designed to enable the propeller to run ahead and astern, to disconnect the propeller shaft from the engine and lowering the speed relative to the engine crankshaft. Reverse gear is included on the instrument panel toggle switch.

The engine and reverse gear are placed openly in the forward part of the boat. The motorman and his assistant sits are placed behind it, as well as manual bilge pump. In the stern there are fuel tanks, tow rope, spare parts, lifebuoy and tarpaulin cab.

DIESEL MARINE YAZ-204A-CP-2.5m
Type: two-stroke, vertical, single row with a straight-flow valve-slot-blowing, with reverse-reduction gear.
Plant manufacturer – PO BMZ
Rated power at the output shaft flange reverse gear while going ahead, kW (hp) – 73.6 (100) Power is given under the conditions:
ambient temperature, K, (C) 298 (25)
pressure Pa (mmHg) 100 000 (750)
60% relative humidity
negative pressure at the inlet, Pa (mm water column), not more than 360 (240)
backpressure on the exhaust at a frequency of rotation of crankshaft 20 rps as measured at a distance of 100 mm from the exhaust manifold flange, Pa (mm Hg), not more than 5050 (38)
maximum power after the 50-hour run at the flange output shaft reverse gear for not more than 1 hour of continuous operation under the conditions specified in paragraph 1, kW (hp), not less than 88.3 (120)

Note:
Maximum power of non-run-in engine, no less – 84.6 kW (115 hp)
Maximum power output on the shaft flange reverse gear in reverse, kW (hp) – 50.8 (69)
Engine speed diesel engine rev / min:

• At rated power – 1900
• Maximum power – 2000
• Maximum astern – 1650
• Minimally stable idling – (400 … 500)

The maximum torque developed, N * m (kgf * m), at least:

• Ahead – 490 (50)
• Astern – 294 (30)

Dimensions of the engine, mm:

• Length – 1684
• Width – 981
• Height – 1048

Dry mass, kg – 950
Specific fuel consumption, g / hp * h – 206
Reverse gear – SRRP-50-2, 5
Gear ratio, full ahead – 2.485
Gear ratio, full astern – 2.9

Specifications: