![]() ![]() Since the total fuel capacity of the four fuel tanks was around 125 gallons (568 liters), the operational range of a Tiger I was limited and refueling stops had to be frequent, especially when traveling off road. It also had a high fuel consumption rate of approximately 2.75 gallons per mile. While it was comparable in speed to other German tanks of the time, it was still slower than many of its adversaries, such as the Russian T34. But even the power increase from the HL 210 to the HL 230 was not enough. Only the first 250 Tigers had the HL 210 engine. The new engine was designated the Maybach HL 230 TRM P45. The result was a gain in power to 700bhp at 3000rpm. This increased the weight of the motor but also increased the rigidity. As a result the original engines displacement was increased by replacing the aluminum cylinder block with a cast iron block and boring it out to 23.88 liters (1457 cubic inches). Because of the tight engine compartment and other technical limitations it was impossible to install a physically larger, more powerful motor. ![]() It soon became obvious that the Tiger I was seriously underpowered. The engine could not be reliably operated at its maximum power output of 3000 rpms and indeed the operating manual given to the Tiger crews, the Tigerfibel, recommended no more than 2600 rpms. The engine was rushed into production without all the bugs being worked out. It was mounted in a sealed compartment at the rear of the Tiger. It was 4 feet long, 3 feet 2 inches wide and 3 feet 1 inch tall without the air cleaners. ![]() The compact engine put out tremendous power for its size. TRM = Trockensumpfschmierung mit Schnappermagne (dry sump lubricant with impulse magneto) HL = Hochleistungsmotor (high performance motor) The engine designations meant the following: This engine was the Maybach HL 210 TRM P45. The first Tiger engine was a V-12 water-cooled gasoline engine with a capacity of 21.33 liters (1302 cubic inches) and a power output of 650bhp at 3000rpm. The Maybach company, under the technical leadership of Karl Maybach, produced the engines for all the medium and heavy German tanks of WWII. The engines for the Tiger I were developed specifically for them by the Maybach company of Berlin (Maybach-Motorenbau GmbH). Below is technical data on both models of the Tigers Maybach engine. ![]()
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