Editing Tiger II (section)

==Proposed upgrades==
The Maybach [[List of WWII Maybach engines#HL234|HL234]], an engine born from attempting to convert the Maybach HL230 to [[fuel injection]], would have increased the power from 700 to at least 800 PS (hp). In January 1945 the ''Entwicklungskommission Panzer'' unanimously decided that HL234 be immediately included in the engine design and procurement program. The ZF AK-7-200 gearbox was also explored as an alternative to the Maybach Olvar-B semi-automatic gearbox, but ''[[Waffenamt]]'' research and development department ''Wa Prüf 6'' found that it offered inferior driving characteristics and so the Maybach Olvar-B was retained.{{sfn|Jentz|Doyle|1997|p=144-154}} There was also a program using the Simmering-Graz-Pauker Sla.16-cylinder diesel engine,{{sfn|Jentz|Doyle|1997|p=144-154}} but the war's constraint on supplies and Germany's capitulation resulted in the cancellation of this program.{{citation needed|date=November 2017}} Krupp proposed mounting a new main weapon, the [[105 mm calibre|10.5 cm]] KwK L/68. ''Wa Prüf 6'' did not support this as the ''Heer'' had not accepted the cannon. Other suggested improvements included stabilised sights, a stabilised main gun, an [[Autoloader|automatic ammunition feed]], a [[Carl Zeiss AG]] [[stereoscopic rangefinder]], heated crew compartment, stowage <!-- stowage is the correct term, storage is wrong --> for an additional 12 rounds, and an [[Overpressure (CBRN protection)|overpressure]] and air filtration system to protect against [[Chemical weapon|poison gas]]. However, these also never got beyond the proposal stage or did not enter production before the war ended.{{sfn|Jentz|Doyle|1997|p=144-154}}