This design was used in the Junkers Jumo 205 diesel aircraft engine, using two crankshafts at either end of a single bank of cylinders, and most remarkably in the Napier Deltic diesel engines.

Opposed-piston engines put two pistons working at opposite ends of the same cylinder and this has been extended into triangular arrangements such as the Napier Deltic.

Ported types are represented by the opposed piston design in which there are two pistons in each cylinder, working in opposite directions such as the Junkers Jumo and Napier Deltic.

* Napier Deltic

* Napier Deltic

Napier Deltic engine, cut away for display

Napier then designed the Deltic, essentially three Culverins arranged in a large triangle ( deltoid ).

Today Napier is no longer in the engine business, with the ending of the Deltic sales in the 1960s they had no new modern designs to offer.

* Deltic History: Napier Heritage

Napier Deltic engine at the National Railway Museum, York, United Kingdom | UK

The Napier Deltic engine is a British opposed-piston valveless, two-stroke diesel engine used in marine and locomotive applications, designed and produced by Napier & Son.

Category: Napier Deltic

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A more common layout uses two crankshafts, with the crankshafts geared together, or even three geared crankshafts in the Napier Deltic diesel engines.

* Napier Deltic

* Napier Deltic ( Makers D. Napier and Son were an EE subsidiary company from 1942 )

They gained the name " Deltic " from the prototype locomotive, DP1 Deltic, which in turn was named for its Napier Deltic power units.

A sectioned Napier Deltic | Napier Deltic engine at the National Railway Museum

On the one hand, Napier made it clear to the Ethiopians that the sole intent of the British force was to rescue the imprisoned Europeans — not conquest ; on the other, Napier met with local potentates such as Ras Kassa ( the future Emperor Yohannes IV ), and arranged to purchase needed supplies with the 4. 35 million Maria Theresa Thalers ( the preferred currency of the area ) the British had purchased from the mint in Vienna.

New Zealand DF class locomotive ( 1979 ) | DFT 7145 in Napier in Tranz Rail's Bumble-Bee ( livery ) | " bumble bee " livery, in use 2001 — 2004.

A number of services came to an end in the early 2000s: the Kaimai Express to Tauranga, the Geyserland Express to Rotorua, and the Bay Express to Napier all ceased in 2001 ; The Southerner from Christchurch, through Dunedin to Invercargill in 2002 — and The Northerner night service between Auckland and Wellington in 2004.

* The Bay Express: Wellington — Napier

On the annexation of the Punjaub by Lord Dalhousie in 1849, John Coke was appointed to raise a regiment for frontier service, and commenced raising the 1st Punjaub Infantry on 6 April 1849 ; on 23 February following, the regiment was reviewed by the Commander-in-Chief, Sir Charles Napier, G. C. B., when he reported to Colonel Henry Montgomery Lawrence, Deputy Commissioner of Peshawur: —

Close to Egmore, the river forks into two — the northern and the southern arms — both of which join again near the Napier bridge, thus forming an island, known as the Island Grounds.

* Charles Napier — Warden

In May 1833, Charles Chalmers took a lease of Merchiston Castle ( the former home of John Napier, the inventor of logarithms ) — which at that time stood in rural surroundings — and opened his academy, starting with some thirty boys.

William Ewart Napier recalled Lipschütz as a " frail little man, with a gentlemanly mien and manners and an extravagantly long, pointed nose — the Cyrano of Chess ".

He urged the adoption of a tank that would use the suspension system and also follow Christie's practice of using a lightweight aircraft engine such as the Liberty Engine or a Napier Lion.

This line was designed by long term Lone Star employee Stuart Goss, and followed in 1960 by " Treble-0-Lectric " electrically powered working models of two British diesel locomotives: The Class 24 Sulzer Type 2 diesel, the Class 23 Napier Type 2 " Baby Deltic " diesel, an American Baldwin 0-8-0 Steam Locomotive and an F7 US Diesel Electric loco which was available in both US and Canadian liveries.

This was a large two-seat, two-bay amphibious biplane powered by a 450 hp Napier Lion engine.

The centrally located 450 hp Napier Lion engine had side-mounted radiators which could be retracted in flight to achieve additional streamlining.

| engine ( prop )= Napier Sabre IIA, IIB or IIC

* Napier Javelin a British, piston, aircraft engine

The Scottish Argyll company used its own, much simpler and efficient, single-sleeve system in its cars, a system which, after extensive development, saw substantial use in British aircraft engines of the 1940s, such as the Napier Sabre and Bristol Hercules and Centaurus, only to be supplanted by the jet engine.

Napier Lion W engine | W or broad arrow layout with three banks

Napier Lion engine

Napier Sabre engine

Starting from scratch, Napier decided to use the new sleeve valve design in a much larger H-block 24-cylinder engine, soon to be known as the Sabre.

Napier developed a marine engine from the Lion aero engine, the petrol-driven Sea Lion, which could deliver and was used in the " Whaleback " Air Sea Rescue Launches.

During the war ( 1944 ) Napier were asked by the Royal Navy to supply a diesel engine for use in their patrol boats, but the Culverin's 720 hp ( 537 kW ) was not nearly enough for their needs.

Last of the great Napier engines was the Nomad, a " turbo-compound " design that combined a diesel engine with a turbine to recover energy otherwise lost in the exhaust.

Along with every other engine company in the post-war era, Napier turned to jet engine designs.

* Napier & Son, a British engine manufacturer

The class which completed the course at Cochran Field was now split up, half were posted to Napier Field, Dothan, Alabama, to train on single engine planes, and the remainder were posted to twin-engine schools.

| engine ( prop )= Napier Sabre IIA or IIB or IIC

Napier Sabre H-24 engine.