Just something I found!
Дата: 24.09.2013 20:55:03
IPaul72: Hello all
As you may or may not know I grew up around Engines and was a driver and also a fitter so I spent a lot of time around tanks and engines in an earlier profession.
Tanks and engines still are my passion
So I found this I knocked together a while ago and thought I would share it with you.
If you like it when I have time I shall knock some more together.
Engine Variants of the Pz.Kpfw .VI Tiger The Maybach engines for the Tiger tank was developed under the technical leadership of Karl Maybach of Maybach-Motorenbau GmbH Berlin. The Maybach Company already had the expertise in development of engines for tanks as the company was the main producer of engines for all medium and heavy tanks for Germany during this period.
Due to the restrictions and confines of the Tigers engine bay the power pack had to be small efficient, reliable and most of all powerful enough to serve the needs of the vehicle in combat conditions. The first engine produced for the Tiger was the Maybach HL210 TRM P45. The engine designations meant the following:
HL – Hochleistungsmotor (high performance)
TRM – Trockensumpfschmierung mit Schnappermagne (dry sump with impulse magneto)
P – Panzermotor (Tank Engine)
The first engine developed was a V-12 water cooled Benzin Engine (Petroleum) the capacity of which was 21.33 litres and was capable of producing 650Bhp at 3000Rpm.
Below is a picture of the HL 210 P45 Engine:
The HL 210 P45 engine had an exceptional power output for its size but unfortunately because of timing and deadline restrictions it was rushed into production without being properly tested. To obtain the maximum power output the engine had to run at 3000rpm. However this proved the engine to be unreliable. So it was suggested within the Tigers operational manual (Tigerfibel) that the engine was not to be run at more than 2600rpm, this was implemented in the manual due to reliability concerns for the HL 210 P45 engine.
It was soon to be seen with the setup of the HL 210 P45 series the Tiger was seriously underpowered. The lack of proper testing and introduction of this engine proved that was not reliable under combat conditions.
The fuel consumption of the engine at 2.75 gallons per mile proved it to be a logistical concern. German logistics calculated given the size of the Tigers fuel tanks this being 4 of them with a total capacity of 128 gallons or 568 litres the operation range was 121.2 miles on road and 68.4 miles off road before having to refuel.
The HL 210 P45 had an aluminium cylinder block and cylinder heads in order to make it lighter. This is where the problems with reliability began to show. Because of the confines of the engine bay it was to run too hot and over heat. This would cause the block or heads to crack, hence compression1 leaks and cross contamination of water and fuel making the engine non-functional. This also increased the need to replace cylinder blocks or cylinder block heads and or relevant gaskets frequently through heat warping of the engine. Only the first 250 Tigers were fitted with the HL 210 P45 engine before the introduction of the HL 230 P45 engine was introduced.
Below is a picture of the HL 230 P45 engine. (Like the engine found in Tiger 131 at Bovington)
The main difference between the two engines was the HL 230 P45 had a cast iron block. Hence making the engine more durable and able to run hot at higher temperatures, thus reducing the risk of cracks within the main cylinder block itself.
--------------------------------------------------------------------------------
1 By referring to the term compression it is a word that best describes the measure of compressed air and gasses within an engine’s cylinders (in this case 12 of them). If the engine is not sealed, (i.e. cracked cylinder block) the pressure contained within will disperse. Hence, making the engine not run properly causing a tremendous loss of power.
--------------------------------------------------------------------------------
Visually the two engines are very similar in design the only difference would be air filter housings (the pan shaped objects at the top of the engine) the HL 210 P45 had three air filter housings and the HL 230 P45 only had two. It may be also worth mentioning that the ignition magnetos were located differently on the HL 230 P45.
All In all considering the Engine was a rushed production and could have been made more reliable. It was only 4 feet long and 3 feet 2 inches wide and 3 feet 1 inches tall. It was an outstanding feat of engineering considering the period.
Below are pictures of the HL 210 P45 cutaway schematics :
Sources of information come from:
Preliminary Report No 19
PzKpfw VI (Tiger)
Military College of Science
SCHOOL OF TANK TECHNOLOGY
November 1943”
Kind Regards
IPaul72
As you may or may not know I grew up around Engines and was a driver and also a fitter so I spent a lot of time around tanks and engines in an earlier profession.
Tanks and engines still are my passion
So I found this I knocked together a while ago and thought I would share it with you.
If you like it when I have time I shall knock some more together.
Engine Variants of the Pz.Kpfw .VI Tiger The Maybach engines for the Tiger tank was developed under the technical leadership of Karl Maybach of Maybach-Motorenbau GmbH Berlin. The Maybach Company already had the expertise in development of engines for tanks as the company was the main producer of engines for all medium and heavy tanks for Germany during this period.
Due to the restrictions and confines of the Tigers engine bay the power pack had to be small efficient, reliable and most of all powerful enough to serve the needs of the vehicle in combat conditions. The first engine produced for the Tiger was the Maybach HL210 TRM P45. The engine designations meant the following:
HL – Hochleistungsmotor (high performance)
TRM – Trockensumpfschmierung mit Schnappermagne (dry sump with impulse magneto)
P – Panzermotor (Tank Engine)
The first engine developed was a V-12 water cooled Benzin Engine (Petroleum) the capacity of which was 21.33 litres and was capable of producing 650Bhp at 3000Rpm.
Below is a picture of the HL 210 P45 Engine:
The HL 210 P45 engine had an exceptional power output for its size but unfortunately because of timing and deadline restrictions it was rushed into production without being properly tested. To obtain the maximum power output the engine had to run at 3000rpm. However this proved the engine to be unreliable. So it was suggested within the Tigers operational manual (Tigerfibel) that the engine was not to be run at more than 2600rpm, this was implemented in the manual due to reliability concerns for the HL 210 P45 engine.
It was soon to be seen with the setup of the HL 210 P45 series the Tiger was seriously underpowered. The lack of proper testing and introduction of this engine proved that was not reliable under combat conditions.
The fuel consumption of the engine at 2.75 gallons per mile proved it to be a logistical concern. German logistics calculated given the size of the Tigers fuel tanks this being 4 of them with a total capacity of 128 gallons or 568 litres the operation range was 121.2 miles on road and 68.4 miles off road before having to refuel.
The HL 210 P45 had an aluminium cylinder block and cylinder heads in order to make it lighter. This is where the problems with reliability began to show. Because of the confines of the engine bay it was to run too hot and over heat. This would cause the block or heads to crack, hence compression1 leaks and cross contamination of water and fuel making the engine non-functional. This also increased the need to replace cylinder blocks or cylinder block heads and or relevant gaskets frequently through heat warping of the engine. Only the first 250 Tigers were fitted with the HL 210 P45 engine before the introduction of the HL 230 P45 engine was introduced.
Below is a picture of the HL 230 P45 engine. (Like the engine found in Tiger 131 at Bovington)
The main difference between the two engines was the HL 230 P45 had a cast iron block. Hence making the engine more durable and able to run hot at higher temperatures, thus reducing the risk of cracks within the main cylinder block itself.
--------------------------------------------------------------------------------
1 By referring to the term compression it is a word that best describes the measure of compressed air and gasses within an engine’s cylinders (in this case 12 of them). If the engine is not sealed, (i.e. cracked cylinder block) the pressure contained within will disperse. Hence, making the engine not run properly causing a tremendous loss of power.
--------------------------------------------------------------------------------
Visually the two engines are very similar in design the only difference would be air filter housings (the pan shaped objects at the top of the engine) the HL 210 P45 had three air filter housings and the HL 230 P45 only had two. It may be also worth mentioning that the ignition magnetos were located differently on the HL 230 P45.
All In all considering the Engine was a rushed production and could have been made more reliable. It was only 4 feet long and 3 feet 2 inches wide and 3 feet 1 inches tall. It was an outstanding feat of engineering considering the period.
Below are pictures of the HL 210 P45 cutaway schematics :
Sources of information come from:
Preliminary Report No 19
PzKpfw VI (Tiger)
Military College of Science
SCHOOL OF TANK TECHNOLOGY
November 1943”
Kind Regards
IPaul72
Just something I found!