ISUZU 4JG2 Engine

ISUZU 4JG2 Engine

The diesel engine has the highest thermal efficiency (engine efficiency) of any practical internal or external combustion engine due to its very high expansion ratio and inherent lean burn which enables heat dissipation by the excess air. A small efficiency loss is also avoided compared to two-stroke non-direct-injection gasoline engines since unburned fuel is not present at valve overlap and therefore no fuel goes directly from the intake/injection to the exhaust. Low-speed diesel engines (as used in ships and other applications where overall engine weight is relatively unimportant) can have a thermal efficiency that exceeds 50%.
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Engine Model

4JG2

Application

Forklift

Type

Four Cycle, Water Cooled, Overhead Valve Vertical In-Line, Swirl Chamber

CYL. No. -Bore x Stroke

4-95.4 x 107 mm

The number of cylinders

4

Compression Ratio

20.5 To 1

Idle Engine Speed

750 ± 25 rpm

Firing order

1-3-4-2

Oil Pump

Trochoid Type Oil Pump By Camshaft Driven

Cooling System

By Pressurized Water Forced Circulation Type, Centrifugal Vane Type, By Vee Belt Driven

Cooling Capacity

4.5 Li t. (Engine Only)

Lubrication Oil Capacity

Max. 7.5 Lit., Min 5.5 Lit (Oil Pan Only)

Type of Lubrication Oil

APICC or CD

Fan Speed Ratio

1.12 (Crankshaft Pulley Dia./Fan Pulley Dia.)

Rated power (r/min kW/)

44.9 kW (61 ps)/2450 rpm

Net quality (kg)

244 kgs (538lbs)

Emission level

European II or(EGR cooling return valve)

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