The Maybach HL230 was a

water-cooled Cooling tower and water discharge of a nuclear power plant Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and non ...

60° 23

litre The litre (international spelling) or liter (American English spelling) (SI symbols L and l, other symbol used: ℓ) is a metric unit of volume. It is equal to 1 cubic decimetre (dm3), 1000 cubic centimetres (cm3) or 0.001 cubic metre (m3). ...

V12 V12 or V-12 may refer to: Aircraft * Mil V-12, a Soviet heavy lift helicopter * Pilatus OV-12, a planned American military utility aircraft * Rockwell XFV-12, an American experimental aircraft project * Škoda-Kauba V12, a Czechoslovak experim ...

petrol engine A petrol engine (gasoline engine in American English) is an internal combustion engine designed to run on petrol (gasoline). Petrol engines can often be adapted to also run on fuels such as liquefied petroleum gas and ethanol blends (such as ''E ...

Maybach Maybach (, ) is a Automotive industry in Germany, German luxury car brand that exists today as a part of Mercedes-Benz. The original company was founded in 1909 by Wilhelm Maybach and his son Karl Maybach, originally as a subsidiary of ''Lufts ...

. It was used during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

in heavy

German German(s) may refer to: * Germany (of or related to) ** Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...

tank A tank is an armoured fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong armour, and good battlefield mobility provided by tracks and a powerful engin ...

s, namely the

Panther Panther may refer to: Large cats *Pantherinae, the cat subfamily that contains the genera ''Panthera'' and ''Neofelis'' **'' Panthera'', the cat genus that contains tigers, lions, jaguars and leopards. *** Jaguar (''Panthera onca''), found in So ...

Jagdpanther The ''Jagdpanther'' (German: "hunting Panther"), Sd.Kfz. 173, was a tank destroyer (''Jagdpanzer'', a self-propelled anti-tank gun) built by Germany during World War II. The ''Jagdpanther'' combined the 8.8 cm Pak 43 anti-tank gun, similar to th ...

Tiger II The Tiger II is a German heavy tank of the Second World War. The final official German designation was ''Panzerkampfwagen'' Tiger ''Ausf''. B,'' Panzerkampfwagen'' – abbr: ''Pz.'' or ''Pz.Kfw.'' (English: "armoured fighting vehicle"), ''Ausf.' ...

Jagdtiger The ''Jagdtiger'' ("Hunting Tiger"; officially designated ''Panzerjäger Tiger Ausf. B'') is a German casemate-type heavy tank destroyer (''Jagdpanzer'') of World War II. It was built upon the slightly lengthened chassis of a Tiger II. Its or ...

(HL230 P30), and later versions of the

Tiger I The Tiger I () was a German heavy tank of World War II that operated beginning in 1942 in Africa and in the Soviet Union, usually in independent heavy tank battalions. It gave the German Army its first armoured fighting vehicle that mounted ...

and

Sturmtiger () was a World War II German assault gun built on the Tiger I chassis and armed with a 380mm rocket-propelled mortar. The official German designation was ''Sturmmörserwagen 606/4 mit 38 cm RW 61''. Its primary task was to provide heavy f ...

(HL230 P45).

Description

The engine was an upgraded version of the slightly smaller HL210 engine which was used to equip the first 250 Tiger I tanks built, and unlike the HL230 had an

aluminium Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. I ...

crankcase In a piston engine, the crankcase is the housing that surrounds the crankshaft. In most modern engines, the crankcase is integrated into the engine block. Two-stroke engines typically use a crankcase-compression design, resulting in the fuel/a ...

and

block Block or blocked may refer to: Arts, entertainment and media Broadcasting * Block programming, the result of a programming strategy in broadcasting * W242BX, a radio station licensed to Greenville, South Carolina, United States known as ''96.3 ...

. The HL210 engine had a displacement of or 1,779 cm³ per cylinder; bore , stroke . The HL230 engine bore was increased from 125 mm to 130 mm. It had a displacement of or 1.925 cm³ per cylinder; bore , stroke . The maximum output of 700 PS (690 hp, 515 kW) at 3,000

rpm Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or with the notation min−1) is a unit of rotational speed or rotational frequency for rotating machines. Standards ISO 80000-3:2019 defines a unit of rotation as the dimensionl ...

. Maximum

torque In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment of force (also abbreviated to moment). It represents the capability of a force to produce change in the rotational motion of th ...

is 1850 Nm (1364.5 ft lbs) at 2,100 rpm. Typical output was 600 PS (592 hp, 441 kW) at 2,500 rpm. The crankcase and block were made of

grey cast iron Gray iron, or grey cast iron, is a type of cast iron that has a graphitic microstructure. It is named after the gray color of the fracture it forms, which is due to the presence of graphite.. It is the most common cast iron and the most widely ...

and the

cylinder head In an internal combustion engine, the cylinder head (often abbreviated to simply "head") sits above the cylinders and forms the roof of the combustion chamber. In sidevalve engines, the head is a simple sheet of metal; whereas in more modern ov ...

s from

cast iron Cast iron is a class of iron–carbon alloys with a carbon content more than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its color when fractured: white cast iron has carbide impuriti ...

. The engine weighed 1200 kg and its dimensions were . Aspiration was provided by four twin-choke

Solex Solex may refer to: * Solex (musician), Dutch musician * Solex Carburetor, a French manufacturer of carburetors and the powered bicycle VéloSoleX * Solex College, a former private for-profit college in Chicago, Illinois * Solex Unit, a fictiona ...

type 52JFF

carburettor A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the venturi tube in the main meterin ...

s. Ignition was by two magnetos. The compression ratio was 6.8:1. As was typical practice for Maybach, the engine used a tunnel crankshaft. Late in the war the HL234 upgrade with

fuel injection Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All comp ...

was recommended by the Entwicklungskommission Panzer for use in the underpowered

tank. The power output was expected to increase to between 800 and 900 PS (hp), and with supercharging to 1100 to 1200 hp.

Production

Approximately 9,000 HL230s were produced in total by Maybach,

Auto Union Auto Union AG, was an amalgamation of four German automobile manufacturers, founded in 1932 and established in 1936 in Chemnitz, Saxony. It is the immediate predecessor of Audi as it is known today. As well as acting as an umbrella firm f ...

and

Daimler-Benz The Mercedes-Benz Group Aktiengesellschaft, AG (previously named Daimler-Benz, DaimlerChrysler and Daimler) is a German Multinational corporation, multinational automotive corporation headquartered in Stuttgart, Baden-Württemberg, Germany. It ...

. Beginning on 3 November 1944, they were produced at the Richard I underground factory at

Leitmeritz concentration camp Leitmeritz was the largest subcamp of the Flossenbürg concentration camp, operated by Nazi Germany in Leitmeritz, Reichsgau Sudetenland (now Litoměřice, Czech Republic). Established on 24 March 1944 as part of an effort to disperse and inc ...

References

External links

Copy of British report on the HL230 and HL210 engines
- Tiger I Information Center
Detailed picture gallery of HL230 Tiger engine overhaul
- Armytech.com *{{Cite web , title=General Arrangement drawings, HL230 P30 , url=http://www.servicehistorique.sga.defense.gouv.fr/02fonds-collections/banquedocuments/materiel_armement/fiche.php?id=183 , author=French Army studies of captured equipment, 1945 , publisher=Servicehistorique.sga.defense.gouv.fr , format=TIFF , archive-url=https://web.archive.org/web/20071216103335/http://www.servicehistorique.sga.defense.gouv.fr/02fonds-collections/banquedocuments/materiel_armement/fiche.php?id=183 , archive-date=2007-12-16 , url-status=dead Tank engines HL230 Gasoline engines by model V12 engines

Description

Production

See also

References

External links