Pratt & Whitney Rocketdyne have been commissioned by DARPA to develop a diesel Wankel engine for use in a prototype VTOL flying car called the " Transformer ".

The prototype was equipped with a gasoline engine because the development of the OM636 diesel engine had not been finished.

This prototype diesel locomotive, no.

Meanwhile, the V2 prototype started tests in September 1944, fitted with a Daimler-Benz MB 517 diesel engine, new electric steering system and a Skoda Works designed running gear and tracks.

During this period his two prototype diesel electric locomotives appeared.

Between 1852 and 1957 more than 1, 200 steam locomotives as well as prototype diesel electric and electric locomotives were constructed there, before the eventual closure of the facility in 1962.

Some prototype versions have a 1. 8-litre petrol or Volkswagen's 1. 9 diesel engine ; these were never used.

* British Rail D0260, a prototype diesel locomotive

In 2003, after receiving a grant from the Florida Department of Transportation, Tri-Rail contracted to purchase two pieces of rolling stock from Colorado Railcar: a self-propelled diesel multiple unit, ( DMU ) prototype control car and unpowered bi-level coach entered regular service with Tri-Rail in October 2006.

A prototype diesel locomotive, class Hm2 / 2, number 8, was delivered in 1973 but sold to the Chemin de fer Montreux-Glion-Rochers-de-Naye in 1995 as their number 4.

The prototype class 252 ( power cars 43000 and 43001 ) took the world record for diesel traction, achieving 143. 2 mph ( 230 km / h ) on 12 June 1973 on the East Coast Main Line between Northallerton and Thirsk.

The origins of the Class 40 fleet lay in the prototype diesel locomotives ( Types D16 / 1 ordered by the London, Midland and Scottish Railway and British Railways and D16 / 2 ordered by British Railways between 1947 and 1954 ) and most notably with the Southern Region locomotive No. 10203, which was powered by English Electric's 16SVT MkII engine developing 2, 000 bhp ( 1, 460 kW ).

After the sole prototype was built, the firm returned to its two-stroke gasoline and diesel stationary engine production.

The self-funded prototype Lion main line locomotive was a particular disappointment, powered by a Sulzer 2, 750 hp diesel engine, it was pitted against another self-funded prototype, Falcon, built by Brush at Loughborough which had twin 1, 400 hp Maybach engines ; after trials British Railways preferred the BRCW approach, but ordered them to be built by the Brush company.

The diesel plug-in hybrid prototype is branded as a " Super Efficient Vehicle " ( SEV ).

GE had previously produced a number of prototype diesel switchers, in part with Alco.

In June 2008, students developed a prototype of a hybrid electric vehicle that uses both electric energy and diesel mixed with biodiesel.

The British Rail Class 101 diesel multiple units were built by Metro-Cammell at Washwood Heath in Birmingham from 1956 to 1959, following construction of a series of prototype units.

DHP1, meaning Diesel Hydraulic Prototype number 1, was a prototype Type 3 mainline diesel locomotive built in 1965 by Clayton to demonstrate their wares to British Railways.

HS4000, named Kestrel, was a prototype high-powered mainline diesel locomotive built in 1967 by Brush Traction, Loughborough as a technology demonstrator for potential future British Rail and export orders The locomotive number is a combination of the initials of the owner of Brush Hawker Siddeley and the power rating of its Sulzer diesel engine ( 4000 HP ).

Although prototype diesel locomotives ran in Britain before World War II, the railways of both the Republic and Northern Ireland changed over much more rapidly from steam to diesel traction, in the 1950s than those in Britain, due to the island's limited coal reserves and ( in the Republic ) ageing steam locomotive fleet.

7 passengers are killed, 45 injured, and prototype diesel locomotive DP2 is written off.

In 1939, they made a prototype with the first three-cylinder engine.

Their first passenger car was the F89 using the body from the prototype F9 made before the war and the two-cylinder two-stroke engine from the last F8.

* 1957 – Felix Wankel's first working prototype ( DKM 54 ) of the Wankel engine runs at the NSU research and development department Versuchsabteilung TX in Germany

In February 1907 a prototype model with a 45-degree V-Twin engine was displayed at the Chicago Automobile Show.

Lastly, in 1981 Porsche entered 1 of 2 specially built 924 Carrera GTP's ( Aka: 944GTP Le Mans ) which Porsche Motorsports introduced a new prototype highly modified 2. 5 liter I4 engine.

He received his first patent for the engine in 1929, began development in the early 1950s at NSU, completing a working prototype in 1957.

In 1972, Yamaha introduced the ' RZ201 ' at the Tokyo Motor Show, a prototype with Wankel engine, weighing 220 kg and producing 60 hp from a 660 cc engine ( US patent N396448 ).

An October 28, 2010 patent from Pratt & Whitney Rocketdyne, describes a Wankel engine superficially similar to Rolls-Royce's earlier prototype that required an external air compressor to achieve high enough compression for diesel-cycle combustion.

* 1886 – 1890: Herbert Akroyd Stuart of Halifax Yorkshire, England receives his first patent on a prototype of the hot bulb engine.

Human knowledge and mastery over nature advances when James Watt builds a successful prototype of a steam engine, and a scientific expedition continues as Captain James Cook claims the South Georgia and South Sandwich Islands in the south Atlantic Ocean for Britain.

Caliri designed the M184, the team's prototype Formula One car ( intended as a dual purpose design for the new Formula 3000 ) around Alfa Romeo's V8 turbocharged engine but when engineer Carlo Chiti left Alfa Romeo to found Motori Moderni, Minardi became the only customer for his new V6 engine design.

Packard built the Rolls-Royce Merlin aero engine under license alongside the 4M-2500, but with the exception of the PT-9 prototype boat brought from England for Elco to examine and copy, the Merlin was never used in PTs.

The engine developed from this project found its way into many successful motor cars manufactured by other companies, such as Cooper, Frazer Nash, and AC, and in and powered the Bristol 450 sports prototype to class victories in the 24 Hours of Le Mans race.

In 1931, Tatra built the V570 prototype, which had a air-cooled flat-twin engine mounted at the rear.

* Type 164: Six-wheeled, twin engine, dual-control prototype ; never entered production

On October 20, 1944 Burcham was killed in the flame-out on take-off of the engine of third production prototype YP-80 from Lockheed Air Terminal in Burbank, California.

Lotus of Norfolk, UK, has a prototype direct-injection two-stroke engine intended for alcohol fuels called the Omnivore which it is demonstrating in a version of the Exige.

The T-5 prototype was a two-seat, mid-mounted engine roadster.

However his heat engine was not a success, as his prototype was designed to burn birchwood and would not work well with coal ( the main fuel used in England ).

Mid-engined designs were in fashion at the time and in 1972 the Diablo, a prototype with an Austin Maxi engine and transaxle was built by privateers Peter Bohanna and Robin Stables.