Inboard engine
An inboard motor ( colloquially inboard or inboard ) is the name given to a main drive motor on a boat or ship that is permanently installed in the hull. The drive shaft must therefore be led outwards at some point through the fuselage. At this point the rotating shaft is sealed by a stuffing box .
The first inboard engine was the steam engine (from 1783).
Today the term inboard motor is only used in sport and recreational boating to differentiate these boats from the group of boats with an outboard motor .
For commercial shipping see ship engine .
With the inboard engine, the power is transmitted to the propeller:
- via a rigid shaft (if the engine is installed amidships)
- , occasionally via a shaft reversing gear (to reverse direction when the engine is out of space or weight is installed at the rear) than V drive designated
- via a steerable and trimmable Z-drive attached to the stern of the boat
- via a pod drive that is mounted under the boat and can be swiveled through 360 °
Alternatively, a jet drive can also be installed.
history
Gottlieb Daimler installed the combustion engine he had invented together with Wilhelm Maybach in 1886 in a 6-meter-long open boat and made the first test drives on the Neckar with it . He had this "device for operating the propeller shaft of a ship" patented under No. 39367. According to historians' reports, citizens were so afraid of the "slightly explosive" gasoline at the time that Daimler was able to test its engine more undisturbed on the water than inside the town. The sale of motorized boats made a significant contribution to Daimler and Maybach's income in the years that followed.
The Daimler engines were used with success in the later emerging motorboat races. In 1901, the Nice motorboat race was won with a 35 hp two-cylinder engine . It reached a top speed of 37 km / h. The boat Daimler II wanted to take part in the Olympic Games in 1908 . It didn't reach the start line.
With the engine he had invented, Carl Benz mainly devoted himself to automobile construction. But in 1887 he also presented a motorized boat on the Rhine near Mannheim and received the DRP 46612 patent for the "power transmission and reversing device". He offered a 6.2 meter long boat with a 1.5 hp engine for 2995 marks Sale to.
Motors and manufacturers
Both engines that are only produced for the water sports sector and converted automobile engines are used. In racing, converted motorcycle engines are also used in a class up to 1,000 cm³.
The built-in engines are usually four-stroke engines . In the GDR, many were Wartburg - two-stroke engines installed. Wankel engines and gas turbines as well as electric motors are used less often in watercraft.
Selection of manufacturers, also historical (alphabetically):
- Lamborghini , gasoline engines, were very popular in offshore racing boats
- MerCruiser is the inboard brand of Mercury Marine , sold mainly with its own sterndrives
- Perkins , the first boat diesel was a converted tank engine, today range from 5 to 2,000 kW (61 liter displacement)
- Scania , engines from 221 kW (300 PS) to 588 kW (800 PS) with a displacement of 12 to 16 liters
- Seatek, holds the world record for diesel-powered boats at 252.27 km / h
- Volvo Penta , production since 1907
- Volkswagen Marine , diesel engines from 29 kW (40 PS) to 257 kW (350 PS)
- Yanmar , first petrol engine in 1921, today diesel engines from 6.6 kW (9 hp) to 662 kW (900 hp)
Individual evidence
- ↑ a b Extra supplement to the magazine boats, issue 8/1986, publisher: Delius Klasing
- ^ Bill Mallon, Ian Buchanan: The 1908 Olympic Games: Results for All Competitors in All Events, with Commentary (= History of the Early Olympics . Band 5 ). McFarland, 2000, ISBN 1-4766-0952-7 , pp. 204 (English, limited preview in Google Book Search).
- ↑ Kevin Desmond: The Guinness book of motorboating facts and feats . Guinness Superlatives Ltd, Enfield 1979, ISBN 0-900424-86-9
- ↑ Speedboat archive