Hi Nikko,
Just one of the examples is this Zeppelin Rammer. It never did go into production or service. This type of AC development was handled by the lesser developers, the Messerschmitt and FockeWulf staff was too busy getting the main fighters to the front lines.
http://www.luft46.com/misc/zrammer.html
As I recall there were flying examples by Junkers, Arado and some others.
JG200 is the one singular division formed solely with that intent, but there were other earlier incidents were squadron orders went above and beyond what Himmler had promised when he said that any pilot bringing back an undamaged fighter with ammunition remaining will be court martialed.
Pilots of JG 1, 2 and 3 modified their 190s with armor plating on the wings etc and used the ramming tactic repeatedly.
A little copy and paste here for more detail on this here:
The Weapon of the Sturmflieger
Due to the new mission of SturmStaffel 1, better equipped aircraft had to be used to effectively combat the heavy bombers at close ranges. The Focke Wulf 190A-series was known to be a good bomber interceptor. The only problem was that closure time for stern attacks by Fw190s was very slow, leaving the Fw190s vulnerable to both bomber gunners and escorting fighters.
SturmStaffel 1 soon adopted the baby-brother of the 'Sturmbock.' They used Fw190A-5s and A-6s and added 5 inch armor plating called Panzerplatten to critical areas of their aircraft. The unit also added 30mm glass panels to the side of the canopy and to the quarter-panels of the windscreen.
These new and heavier aircraft resulted in double the fuel consumption rate, and soon fuel drop tanks were added, further weighing down the new converted aircraft.
Armament on these early 'Sturmbocks' were the same as the normal FW190A5s and A6s.
Reich Defense
SturmStaffel 1 was among the first units to adopt Reich Defense (Reichsverteidigung) bands. These bands helped pilots distinguish each unit from the other. SturmStaffel 1 chose to adopt the black-white-black band scheme.
Sturm units would soon incorporate the new Fw190A8 and A9 versions into their units and along with the earlier modifications of Sturm aircraft, they soon also incorporated Rustsatze (Field Conversion Kits). The most numerous one used by the Sturm units was the R8 kit which equipped the Fw190A8 with armor glass and a Mk108 30mm cannon in the wing. The new 30mm cannons meant that bombers could be brought down with just a few well placed hits. But the it added still more weight, making the nimble Fw190 sluggish.
The Luftwaffe's Sturm units suffered tremendous losses from enemy escorts. SturmStaffel 1 alone suffered roughly 350% loss of pilots during its short time in the war. Yet the Sturm units were the most groups at bringing down the endless streams of 4-engined bombers that were devastating Germany by day.
End of Copy.
Some of that was later repeated of course in the similarly idiotic Volkssturm where very young kids and very old men "defended" the Fatherland way past the point of no return.
By the way not all FW190s were powered by BMW801 engines. The high altitude D models were powered by inline Jumo engines.
Cheers
Stefan