Crank Case
The AE300 Crankcase is a single piece, squeeze casted part. Based on this design ( cast iron)
separate cylinder liners are not necessary. The cast iron design of the crank case has good failsafe
running functions and also a reduced noise emission. The design of the AE300 is an inline, liquid
cooled engine, the crankcase incorporates the cylinders as well as the coolant passages.
The bore of the cylinder is 83 mm (3,268in). The displacement per cylinder is 498cm³ (30,4 cu in)
which results in a total displacement of 1991 cm³ (121,5 cu in) of the engine. The stroke per piston is
92 mm (3,622 in).
The crankcase also includes provisions for an internal oil pump and a water pump that is mounted on
the engine crank case and driven by the rip belt. The crankcase includes a wet oil sump and contains
the oil supply of the engine.
Cylinder Head
The cylinder head is made of high strength aluminum alloy. The cylinder head is equipped with two
camshafts. Each camshaft drives one intake and one exhaust valve per cylinder. One camshaft is
driven by chain directly from the crankshaft. The other camshaft is driven off the first by direct gear.
The chain drive consists of a double steel chain. Chain tensioning is automatic. The camshafts operate
16 valves, 8 intake and 8 exhaust valves actuated by roller levers with hydraulic valve- clearance
compensation.
The combustion chamber shape of the AE300 is defined mainly by the shape of the piston The valves
are arranged such that the intake air enters the combustion chamber in a swirling pattern to improve
combustion efficiency.
The location of the fuel injector is central to the four valves. The hole immediately next to the injector
hole is the hole for the glow plugs, which are used during pre-heating. The remaining openings in the
cylinder head are coolant passageways. The compression ratio of the engine is 17,5:1.
V-Ripped Belt
The engine is equipped with a V-ribbed belt at the rear end, which drives the coolant pump and the
alternator driven by the crankshaft pulley. The belt is self-tensioning by a spring-loaded pulley.
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