The
Maybach HL230 was a
water-cooled 60° 23
liter V12 gasoline engine designed by
Maybach. It was used during
World War II in heavy
German tanks, namely the
Panther,
Jagdpanther,
Tiger II,
Jagdtiger (HL230 P30), and later versions of the
Tiger I and
Sturmtiger (HL230 P45).
Description[edit]
The engine was a follow-up version of the slightly smaller HL210 that had a
displacement of 21 liters and, unlike the HL230, an
aluminium crankcase and
block. The HL210 was used to equip the first 250 Tiger I tanks built.
The engine had a volume of 23,095 cm³ (approx. 1,925 cm³ per cylinder) and a maximum output of 700
PS (690 hp, 515 kW) at 3,000
rpm. Maximum
torque is 1850 Nm at 2,100 rpm. Typical output was 600 PS (592 hp, 441 kW) at 2,500 rpm.
http://en.wikipedia.org/wiki/Maybach_HL230
The Leopard 2 is propelled by the MTU MB 873 diesel engine, which provides 1,500
PS (1,103
kW) of engine output. The MTU MB 873 diesel engine is a four-stroke, 47.6 litre, 12-cylinder multi-fuel, exhaust turbo-charged, liquid-cooled engine, which has an estimated fuel consumption rate of around 300 litres per 100 km on roads and 500 litres per 100 km across country
http://en.wikipedia.org/wiki/Leopard_2#Propulsion
Rupesin pohtimaan sakujen moottoritekniikan kehitystä. Onhan suunnilleen saman painoisten Tiikeri ykkösen ja Leopard kakkosen myllyissä aivan eri tavalla heppoja. 700 vs. 1500. Wikin tutkiminen aiheutti yllätyksen. Tiikerin moottorin tilavuus on 23 litraa ja Leopardin 47,6 litraa. Lisähepat on saatu näköjään vain moottoria kasvattamalla.
Miksiköhän moottorien suunnittelussa on tyydytty noin kunnianhimottomaan malliin? Vaikeuttaahan ulkomitoiltaan suuri ja painava moottori vaunun muuta suunnittelua.