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The diesel engine is a type of internal combustion engine; more specifically, it is a compression ignition engine, in which the fuel is ignited by being suddenly exposed to the high temperature and pressure of a compressed gas, rather than by a separate source of ignition, such as a spark plug, as is the case in of the gasoline engine.

This is known as the diesel cycle, after German engineer Rudolf Diesel, who invented it in 1892 and received the patent on February 23, 1893 (1893-02-23). Diesel intended the engine to use a variety of fuels including coal dust. He demonstrated it in the 1900 Exposition Universelle (World's Fair) using peanut oil (see biodiesel).

How diesel engines work

When a gas is compressed, its temperature rises (see the combined gas law); a diesel engine uses this property to ignite the fuel. Air is drawn into the cylinder of a diesel engine and compressed by the rising piston at a much higher compression ratio than for a spark-ignition engine, up to 25:1. The air temperature reaches 700–900 °C, or 1300–1650 °F. At the top of the piston stroke, diesel fuel is injected into the combustion chamber at high pressure, through an atomising nozzle, mixing with the hot, high-pressure air. The resulting mixture ignites and burns very rapidly. This contained explosion causes the gas in the chamber to heat up rapidly, which increases its pressure, which in turn forces the piston downwards. The connecting rod transmits this motion to the crankshaft, which is forced to turn, delivering rotary power at the output end of the crankshaft. Scavenging (pushing the exhausted gas-charge out of the cylinder, and drawing in a fresh draught of air) of the engine is done either by ports or valves. To fully realize the capabilities of a diesel engine, use of a turbocharger to compress the intake air is necessary; use of an aftercooler/intercooler to cool the intake air after compression by the turbocharger further increases efficiency.

Read more at Wikipedia.org


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Westerbeke Heat Exchanger Part #47106Westerbeke Heat Exchanger Part #47106 $185.00 Volvo Penta Power Steering CoolerVolvo Penta Power Steering Cooler $150.99
Cummins 6Bt 5.9 Marine DieselsCummins 6Bt 5.9 Marine Diesels $910.00 Detroit Diesel Mtu Marine 23519499 Electronic 4 Button .Detroit Diesel Mtu Marine 23519499 Electronic 4 Button . $175.00
volvo diesel Tamd42 230 hpvolvo diesel Tamd42 230 hp $2,000.00 Detroit Diesel 453 (Twin)Detroit Diesel 453 (Twin) $500.00
(2) 671 Detroit Workboat drive(2) 671 Detroit Workboat drive $2,000.00 Detroit Marine Diesel EnginsDetroit Marine Diesel Engins $12,500.00
Yanmar 3Jh3E Diesel Marine Engine And TransmissionYanmar 3Jh3E Diesel Marine Engine And Transmission $3,999.00 8V-92T Detroit Diesel, Jake Brakes & Deep Valve Covers .8V-92T Detroit Diesel, Jake Brakes & Deep Valve Covers . $795.00
Detroit Diesel v-71 Series Service Manual on CdDetroit Diesel v-71 Series Service Manual on Cd $25.99 Westerbeke Sea Water PumpWesterbeke Sea Water Pump $150.00
Westerbeke 8Kw Btd Diesel Generator with burned StatorWesterbeke 8Kw Btd Diesel Generator with burned Stator $1,200.00 Caterpillar C15 Cylinder HeadCaterpillar C15 Cylinder Head $1,900.00
Walter M601 B Turbine Engine No LogsWalter M601 B Turbine Engine No Logs $15,000.00 Detroit Diesel 71 In-line Engine Shop Manual CdDetroit Diesel 71 In-line Engine Shop Manual Cd $25.99
Detroit Diesel 60 Technician's Service and Parts Manual.Detroit Diesel 60 Technician's Service and Parts Manual. $28.75 6-71 Detroit Diesel, Marine Water Rail6-71 Detroit Diesel, Marine Water Rail $75.00
Volvo Marine DieselVolvo Marine Diesel $350.00 Detuz Tbd 616 V8 Marine Diesel Engines (Pair!) No Reser.Detuz Tbd 616 V8 Marine Diesel Engines (Pair!) No Reser. $4,000.00
6V-92T Detroit Diesel, Blower/Superch​arge r Assy. (51015.6V-92T Detroit Diesel, Blower/Superch​arge r Assy. (51015. $129.50 Northern Lights Marine Diesel 30Kw Generator SetNorthern Lights Marine Diesel 30Kw Generator Set $9,500.00
Perkins 4-108 Diesel Engine, RebuiltPerkins 4-108 Diesel Engine, Rebuilt $3,500.00 Yanmar 4Lha-Stzp w/ Bravo 3X Drive Complete Engine Pack.Yanmar 4Lha-Stzp w/ Bravo 3X Drive Complete Engine Pack. $21,000.00
Detroit Diesel V-92 Manual on Cd v 92Detroit Diesel V-92 Manual on Cd v 92 $25.99 Hydraulic Marine Reverse & Reduction Propulsion Unit Op.Hydraulic Marine Reverse & Reduction Propulsion Unit Op. $17.50
Volvo Penta 280/290 Top CoverVolvo Penta 280/290 Top Cover $35.90 Westerbeke Speed ControlerWesterbeke Speed Controler $125.00
6 Cylinder Volvo Diesel Engine6 Cylinder Volvo Diesel Engine $4,500.00 Volvo Penta Fuel PumpVolvo Penta Fuel Pump $79.07
Lehman 4D50 - 4D61 Marine Diesel Operation & Maintenanc.Lehman 4D50 - 4D61 Marine Diesel Operation & Maintenanc. $10.00 Mase Mariner 4000 Diesel GeneratorMase Mariner 4000 Diesel Generator $1,499.99
Turbocharger For Volvo Penta Diesel Tmd40 Series #82936.Turbocharger For Volvo Penta Diesel Tmd40 Series #82936. $300.00 Tamd 70c volvo penta dieselTamd 70c volvo penta diesel $3,200.00
Volvo Penta Marine Reverse Gear Oil Pressure Gauge 0-42.Volvo Penta Marine Reverse Gear Oil Pressure Gauge 0-42. $49.99 Complete Universal M35-B Marine Diesel Engine in Great .Complete Universal M35-B Marine Diesel Engine in Great . $2,750.00
Detroit Diesel Engine Service / Shop Manual:149 SeriesDetroit Diesel Engine Service / Shop Manual:149 Series $24.95 Northern Lights M673L 6Kw diesel Genset parts package-N.Northern Lights M673L 6Kw diesel Genset parts package-N. $200.00
Detroit Diesel V-71 Manual 3Cds + ExtrasDetroit Diesel V-71 Manual 3Cds + Extras $21.75 volvo penta tamd 41a water pump (rebuilt) tested .volvo penta tamd 41a water pump (rebuilt) tested . $325.00
Manual for Detroit Diesel 6 Cly. series 71 Outboard Pro.Manual for Detroit Diesel 6 Cly. series 71 Outboard Pro. $59.50 Detroit 60 series Diesel Power Service Manuals On-Highw.Detroit 60 series Diesel Power Service Manuals On-Highw. $35.75
Universal Atomic 4 marine used engine - gasoline runnin.Universal Atomic 4 marine used engine - gasoline runnin. $2,400.00 Detroit Diesel 149 Series Engine Manual on CdDetroit Diesel 149 Series Engine Manual on Cd $25.99
Westerbeke Marine GeneratorWesterbeke Marine Generator $4,999.99 Iveco 250 Hp Model 8060Srm25.11 * New !Iveco 250 Hp Model 8060Srm25.11 * New ! $11,000.00
Yanmar marine diesel engine 4Jh2-HteYanmar marine diesel engine 4Jh2-Hte $4,500.00 Yanmar Marine 2 Gm 15Yanmar Marine 2 Gm 15 $1,200.00
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Prices current as of last update, 02/06/12 2:03am.

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