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Lister-Petter Engines  LPWG2, 3, & 4  Alpha Series Engines

The LPWG2, LPWG3, and LPWG4  models are water-cooled gaseous fueled engines built with ribbLPWG Series Enginesed thin-wall cast iron crankcase for quiet operation and have extra large bearing surfaces for low bearing loads and long life. The crankcase includes a service door for easy access and also has a closed crankcase breather for reduced emissions. The engines are water cooled by means of a water circulation pump with thermostat that is driven by a polyvee long-life belt. The engines include an integrated bypass system and they are designed for continuous operation in ambients up to 104 degrees. All of the engines have a lean burn combustion system resulting in low emissions exceeding current legislative requirements and excellent fuel consumption. 

 

Specifications for LPWG2, LPWG3, & LPWG4 “Alpha” Series Engines

 

LPWG2

LPWG3

LPWG4

Power Output @ 1800 RPM:
(Continuous Power)

9.1 hp (natural gas)
10.6 hp (propane)

16.5 hp (natural gas)
18.7 hp (propane)

22.0 hp (natural gas)
25.0 hp (propane)

Power Output @ 1800 RPM:
(Intermittent Power)

10.0 hp (natural gas)
11.7 hp (propane)

18.2 hp (natural gas)
20.6 hp (propane)

24.2 hp (natural gas)
27.5 hp (propane)

Number of Cylinders:

2

3

4

Bore:

86 mm

86 mm

86 mm

3.38 in.

3.38 in.

3.38 in.

Stroke:

80 mm

80 mm

80 mm

3.15 in.

3.15 in.

3.15 in.

Cylinder Capacity:

0.93 litre

1.39 litre

1.86 litre

56.7 in.3

85.1 in.3

113.5 in.3

Lubricating Oil Capacity: (including filter)

3.2 litre

4.0 litre

5.8 litre

5.6 pint

7.0 pint

10.2 pint

Fuel Consumption @ 1800 RPM: (75% load)

82 ft3/h (natural gas)
37 ft3/h (propane)

120 ft3/h (natural gas)
58 ft3/h (propane)

172 ft3/h (natural gas)
75 ft3/h (propane)

Dry Weight:

247 lbs

330 lbs

396 lbs

Dimensions:

23.84 in. (length)

27.78 in. (length)

31.71 in. (length)

19.76 in. (width)

19.76 in. (width)

19.76 in. (width)

26.97 in. (height)

26.97 in. (height)

26.97 in. (height)


Standard Features:

  • Carburetor
  • Flywheel drilled for automatic clutch
  • Flywheel housing with SAE5 flange
  • Electronic governor - constant speed
  • Fuel gas solenoid valve
  • Governor - fixed or variable speed
  • High temperature switch (N/C)
  • Low oil pressure switch (N/C, N/O)
  • Exhaust manifold - top outlet
  • Lubricating oil filter
  • Radiator, extra-large, low mount radiator with 15” pusher type cooling fan
  • Closed crankcase breather system
  • Secondary gas pressure regulator
  • Solid state inductive ignition
  • Water  pump & thermostat
  • Hold-down feet for base mounting


Accessories  (partial list, call
maesco.com for more info):
 

  • Air cleaner - medium or heavy duty
  • Exhaust flanges or silencers
  • Fan drive guards
  • Flywheel end drives, shaft extensions, couplings, SAE industrial clutches
  • Gauges - supplied loose
  • Hydraulic pump drives - gear end and/or flywheel end