Monobloc engine
The monobloc engine is an internal combustion engine, is poured in the cylinder head and a part of the crank in one piece. This design stems from that time forth, in which there were no numerical calculation method for optimizing the Head Block Federation concerning application of force and resultant rifle delay. Furthermore, the gas seal was at high combustion pressure a development theme, modern multi-layer steel gaskets did not exist.
Development
Already in the twenties of the 20th century, the forerunners of the Steyr Daimler Puch AG, the Austrian Arms Factory society had the first monoblock engine in use (type II Steyr, petrol engine).
In 1976, AVL List GmbH introduced the concept of a light diesel engine ( LD). Steyr Daimler Puch and Bayerische Motoren Werke AG ( BMW) founded the BMW - STEYR engine mbH, whose purpose was to bring this light diesel engine in series. He was referred to as engine type "M1". The development partners started after the license acceptance with the design and procurement of so-called Vorentwicklungsprototypen (VEP ) of four-and six-cylinder engines have been developed and procured of which turn various construction stages.
It was the first car engine with direct injection, mechanical pump-nozzle injection elements (patent Steyr Daimler Puch AG), intercooling, turbocharging and a novel acoustic concept (wet capsule, dry capsule). The M1 could not be fully developed within the project time frame. The shares of Steyr Daimler Puch AG was taken over in 1981 by BMW. BMW developed from then swirl chamber engines ( series starting in 1983 ), Steyr Daimler Puch developed the M1 even further (from 1983 in Steyr engine technology GmbH).
The M1 motor went as boat motor 1990 for the U.S. Marine engine manufacturers Outboard Marine Corporation in small series. To mention the license acquisition of the Russian manufacturer GAZ ( Gorkowski Awtomobilny Zavod ) in 1998, which built up to 2007 more than 50,000 4- cylinder monoblock motors ( used among others in the car GAZ Volga or GAZelle ). The M1 is now present on the market for marine and military applications. The Steyr Motors GmbH builds him in the 4 - and 6-cylinder version with up to 225 kW, a version with 135 kW is already certified to the exhaust emission standard Euro 5.
The end of 2009 the executable prototype of a V8 engine was based on two inline four cylinder monoblocks (72 ° bank angle) presented with a preliminary performance data of 250 kW at the Defence & Security Equipment International in London.
The end of 2010 was presented at the Marine equipment tradeshow ( METS ) in Amsterdam, the prototype of a completely newly designed two-cylinder monobloc engine. This engine is to be used as aggregate for sailing boats, tanks, and subsequently as a range extender for automotive use are used. As power 25 kW were electrically called. This engine has a complete balance of the oscillating masses. The series development should begin in 2011 and be completed in 2012.
Another collaboration is to develop, based on the M1 a six-cylinder with 280 hp with the Austrian aircraft engine manufacturer Austro Engine, which announced in March 2011.