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Motorenfabrik Hatz is a German manufacturer of
diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...
s, based in Ruhstorf an der Rott,
Lower Bavaria Lower Bavaria (german: Niederbayern, Bavarian: ''Niedabayern'') is one of the seven administrative regions of Bavaria, Germany, located in the east of the state. Geography Lower Bavaria is subdivided into two regions () – Landshut and Donau-W ...
,
Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
. Especially known for its small, lightweight and robust engines, the engines are mainly used in all kinds of small construction machinery, for generators or pumps


History

Founded in 1880 by Mathias Hatz, the company began to build engines in 1904. In 1910, Hatz began to produce
hot bulb engine Hot or the acronym HOT may refer to: Food and drink *Pungency, in food, a spicy or hot quality *Hot, a wine tasting descriptor Places *Hot district, a district of Chiang Mai province, Thailand **Hot subdistrict, a sub-district of Hot District ...
s for stationary use. Based on that engine, the first Hatz water-cooled diesel engine, the H-series, was developed (max. power: 6 kW; engine speed: 500 rpm; weight: 430 kg). Three years later, a new plant was built at the present location and Hatz started to export engines to
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...
. In 1936, a
two stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of t ...
engine with horizontal cylinder layout, the L2, which was especially intended for the use by the
construction industry Construction is a general term meaning the art and science to form objects, systems, or organizations,"Construction" def. 1.a. 1.b. and 1.c. ''Oxford English Dictionary'' Second Edition on CD-ROM (v. 4.0) Oxford University Press 2009 and come ...
(max. power: 8 kW; engine speed: 1100 rpm; weight: 360 kg) was developed. In 1950, the first agricultural
tractor A tractor is an engineering vehicle specifically designed to deliver a high tractive effort (or torque) at slow speeds, for the purposes of hauling a trailer or machinery such as that used in agriculture, mining or construction. Most common ...
s were presented by Hatz. Another three years later, the first Hatz air-cooled
four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...
diesel engine was introduced, the E80 (max. power 7.5 kW; engine speed: 2000 rpm: 140 kg) which went on sale worldwide. The first high-revving diesel engine which had a housing made of
light alloy Light or visible light is electromagnetic radiation that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres (nm), corresponding to frequencies of 750–420 ter ...
, the E75 (max. power 3.5 kW), was produced from 1958 onwards. This engine, which weighed just 50 kg and ran with an engine speed of up to 3000 rpm, was the basis of the worldwide success of Hatz. In 1966, Hatz introduced the world's smallest industrial diesel engine, the E671 (max. power 2.6 kW, engine speed: 3600 rpm; weight: 34 kg). Two years later, the production of more quite small diesel engines was launched. With the “SilentPack”, a capsuled
air-cooled engine Air-cooled engines rely on the circulation of air directly over heat dissipation fins or hot areas of the engine to cool them in order to keep the engine within operating temperatures. In all combustion engines, a great percentage of the heat ge ...
which went on sale in 1978, the noise emission was reduced by 90% in comparison to a similar uncapsuled engine. At the time of the 100th anniversary of the company, the Motorenfabrik Hatz had approx. 950
employee Employment is a relationship between two parties regulating the provision of paid labour services. Usually based on a contract, one party, the employer, which might be a corporation, a not-for-profit organization, a co-operative, or any other ...
s. A compact two-cylinder engine, the 2G30 (max. power 15 kW; engine speed: 3000 rpm; weight: 85 kg) was introduced in 1986. Two years later, Hatz began with contract-manufacturing of automotive components like conrods,
crankshaft A crankshaft is a mechanical component used in a piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating shaft containing one or more crankpins, that are driven by the pistons via the connecting ...
s,
rocker arm In the context of an internal combustion engine, a rocker arm is a valvetrain component that typically transfers the motion of a pushrod to the corresponding intake/exhaust valve. Rocker arms in automobiles are typically made from stamped steel ...
s, etc. Today, several million parts are produced for the automotive, agricultural and motorcycle industry. The B-series engines, which are still the engines with the highest production volume today, were developed and introduced in the 1990s. Engines with vertical crankshaft followed shortly later. In the 1990s, the fabrication of newly developed products started, for example the air-cooled one-cylinder diesel engines of the series 1B with vertical shaft. Due to their low weight, Hatz diesel engines are also mounted in motorcycles. The motorbike manufacturer
Sommer Sommer is a surname, from the German, Anglo-Saxon and Scandinavian languages word for the season "summer". Notable people with this name include: A–L * Alfred Sommer (born 1943), American academic * Alice Herz-Sommer (1903–2014), Czech-born J ...
based in
Eppstein Eppstein is a town in the Main-Taunus-Kreis, in Hesse, Germany. Eppstein lies west of Frankfurt am Main, around 12 km north east of the state capital Wiesbaden, and is at the edge of the Taunus mountains. The ruins of the Eppstein castle is ...
uses the one-cylinder four-stroke Hatz diesel engine 1B40 (462 cm³, 8 kW/11 PS) for retrofitting of the Indian motorbike series
Royal Enfield Royal Enfield was a brand name under which The Enfield Cycle Company Limited of Redditch, Worcestershire sold motorcycles, bicycles, lawnmowers and stationary engines which they had manufactured. Enfield Cycle Company also used the brand name "E ...
.Sommer Diesel - Hatz driven diesel motorcycl
Sommer Motorradmanufaktur


Products

The product portfolio of Motorenfabrik Hatz comprises 3 business fields: manufacture of diesel engines, of systems and components for the automotive and commercial vehicle industry.


Diesel engines

The product portfolio of Hatz Diesel currently includes six engine series in a power range from 1.5 to 56 kW. Since 2014 a new water-cooled engine, the H-series, is on sale.


B-series

With the slogan “The challenger“, the HATZ 1B-series was presented in 1996, showing a number of technical highlights. In a minimum of space, all the important functional components of the engine such as decompression device, injection pump drive, oil pump with oil pump pressure regulator, valve train system for inlet and outlet valve, governor, speed control lever with governor spring and the multi-functional mechanical control system are integrated in the governor housing. Due to these technical features, the B-series scores with a light-weight and compact design. Depending on their cylinder capacity, the air-cooled one-cylinder diesel engines of B-series are available at power ranges from 1.5 to 7.6 kW and a maximum speed of 3600 rpm. Furthermore, models with vertical or horizontal crankshaft are available. The B-series complies with the strict requirements of
EPA The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...
(Environmental Protection Agency) Tier IV final in the US.


D-series

The D-series, also referred to as SUPRA offers an even more robust design than the B-series. Therefore, the air-cooled one-cylinder diesel engines of this series are frequently mounted in compaction machines but are also used for other application fields such as generating sets for example. They have a power range of 3.5 to 15.2 kW at a maximum speed of 3600 rpm. The maximum torque is at 40.7 Nm. The SUPRA series particularly excels in its high running smoothness. This is achieved by a new design of the balance weights as well as the optimum use of two counter-rotating balance shafts and consequently a 100% first-order counterbalance. On demand, the engine may be equipped with the patented SILENT PACK ©, which reduces the noise emission by up to 90%. In addition, the engines of the D-series have up to 4 power take-off possibilities at the crank-shaft respectively auxiliary drives. Similar to the B-series, the engine is also available in a horizontal or vertical version. Furthermore, the D-series complies with the strict requirements of the
EPA The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...
(Environmental Protection Agency) Tier IV final in the US.


G-series

The G-series is notable for its low weight and ease of maintenance. The air-cooled two-cylinder diesel engine has a power range of 9.8 to 17 kW at a maximum speed of 3600 rpm and a maximum torque of 53.6 Nm. The cylinders are vertically located and may be exchanged individually. The crankcase is made of aluminium alloy. The engines of the G-series comply with the requirements of
EPA The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...
(Environmental Protection Agency) Tier IV final in the US.


M-series

The M-series comprises the Hatz engines with the highest performance. Performance data of the air-cooled two-, three- or four-cylinder engines are available for a power range of 15 to 56 kW at a maximum speed of up to 3000 rpm. The maximum torque of the 4-cylinder version is 219.6 Nm. Due to the air-cooling, the engine may be operated under any climatic conditions and assures high operation reliability. In addition, the system scores with better ease of maintenance and may be easier integrated in existing applications. Since July 2013, a diesel particulate filter and
exhaust gas recirculation In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide () emissions reduction technique used in petrol/gasoline, diesel engines and some hydrogen engines. EGR works by recirculating a portion of an engine's exhaust ...
has been available for the M-series in order to comply with the stricter exhaust gas regulations in the US (
EPA The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...
Tier IV final) and the EU (Stage IIIB).


L-series

The L-series is mostly identical to the M-series in terms of its design except for the patented SILENT PACK © of the L-series, which reduces the noise level by up to 90% compared to the non-capsulated M-series. The power of the engines, available as two-, three- or four-cylinder versions ranges from 15.0 to 54.2 kW at a speed of up to 3000 rpm. The L-series is also available with a separable diesel particulate filter in order to comply with the current exhaust gas regulation in the EU and the US. Thus, engines of the M- and L-series are the only remaining air-cooled engines with air-cooling in this power class which satisfy the exhaust gas regulation.


H-series

Since beginning of 2014, a new engine series expands the Hatz product portfolio: the H-series. Starting with the water-cooled four-cylinder engine model 4H50TIC, Hatz relies on common rail technology, turbo charger and external exhaust gas recirculation. The turbocharged 2 litre engine achieves a maximum power of 55 kW and sets the benchmark in its power class with a weight of only 173 kg. The engine complies with the strict limit values of EU 97/68 Stage IIIB and EPA Tier 4 final without particulate filter.OEM Off-Highwa
OEM Off-Highway Magazine
/ref>SAE - Hatz's next-generation industrial compact engine
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Systems

The Hatz business field of Hatz Systems has developed and produced special systems on the basis of industrial diesel engines. The focus here is on solutions concerning power and energy supply, scalable electricity stations, pumping systems as well as special applications in the maritime and military sector. The range of Hatz Systems extends from 2 kW to several 100 kW power output. In the standard range popular output sizes are offered in the generator set, pumping technology and ship propulsion product groups. As well as these, however, all systems can also be designed on a customer-specific basis. The Special Applications division is particularly involved with individual concepts and customer requirements for systems with industrial engines as power source.


Components

The business field of Hatz Components produces high precision engine and drive elements such as conrods,
crankshafts A crankshaft is a mechanical component used in a piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating shaft containing one or more crankpins, that are driven by the pistons via the connecting ...
, casings and rotating and control parts for engine manufacturers throughout the world. The focus here is on commercial vehicle, automobile, motorcycle, agriculture and printing machine industries as well as the branches of racing and energy generation. In the production of conrods, starting from 1-cylinder engines up to heavy duty 12-cylinder applications, all conrod-specific requirements across all segments are mastered. In addition to form, oval and deep hole drilling, this also includes the crack technology as well as separation cut and profile toothing. The machining of high-strength, micro-alloyed steels, aluminium, cast iron, sintered materials is self-evident and is rounded off in particular by the machining of titanium.


References


External links

* {{Authority control Diesel engine manufacturers German brands Engine manufacturers of Germany Companies established in 1880