Diesel Air
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 WEBASTO AIR TOP 2000ST 12V DIESEL BUNK HEATER BOAT MARINE SEMI TRUCK PARTS $900.00 Time Remaining: 14d 14h 52m Buy It Now for only: $900.00 |
 CAT 3126 DIESEL AIR COMPRESSOR GOVERNOR $8.00 Time Remaining: 1d 12h 10m |
 Detroit Diesel Air Intake Adapter Part Number 23500797 $25.00 Time Remaining: 22d 5h 50m Buy It Now for only: $25.00 |
 Diesel Air Filter Gold Air Filter 2887 Closed 14732 mm FIL 2700 $39.99 Time Remaining: 3d 59m Buy It Now for only: $49.99 |
 Detroit Diesel air compressor water pipefittings 5 8 tube anti vibration $9.99 Time Remaining: 21d 12h 24m Buy It Now for only: $9.99 |
 Haldex Midland Reman TF501 Air Compressor Flange Mount Detroit Diesel 286540X $224.99 Time Remaining: 4h 24m Buy It Now for only: $224.99 |
 air filter 6484 napa gold ford diesel engine $0.99 Time Remaining: 6d 11h 23m Buy It Now for only: $9.00 |
 Detroit Diesel Air Compressor R23522123 $550.00 Time Remaining: 19d 30m Buy It Now for only: $550.00 |
 NEW DETROIT DIESEL 60 SERIES OEM AIR COMPRESSOR MOUNTING KIT $15.00 Time Remaining: 2d 14h 39m |
 dot semi air brake line cat cummins detroit diesel 4 ft $15.50 Time Remaining: 24d 7h 37m Buy It Now for only: $15.50 |
 FREIGHTLINER DIESEL AIR SPRING FIRESTONE P N A16 14377 AIR RIDE $129.95 Time Remaining: 24d 16h 24m Buy It Now for only: $129.95 |
 USED DETROIT DIESEL 60 SERIES OEM DDEC IV AIR AMBIENT TEMP SENSOR $8.00 Time Remaining: 2d 14h 43m |
 Lot of 2 Rapidparts Air Filter Diesel Forklift Truck G6 $12.49 Time Remaining: 16d 15h 17m Buy It Now for only: $12.49 |
 FHG12 DIESEL HUMV AIR FILTER LAF6587 P181034 A408C $14.99 Time Remaining: 15d 4h 25m Buy It Now for only: $14.99 |
 NEW DETROIT DIESEL 60 SERIES OEM NEW STYLE AIR COMPRESSOR GASKETS 2 $4.00 Time Remaining: 2d 14h 49m |
 Webasto 373 001 Combustion Air Fan with Shaft for DBW2010 Diesel Coolant Heater $46.00 Time Remaining: 5d 21h 24m Buy It Now for only: $46.00 |
 USED DETROIT DIESEL 60 SERIES OEM AIR COMPRESSOR POWER STEERING COUPLING $20.00 Time Remaining: 2d 16h 57m |
 dot semi air brake line cat cummins mack diesel 4 ft $15.50 Time Remaining: 24d 8h 4m Buy It Now for only: $15.50 |
 New Detroit Diesel Fast Idle Air Cylinder Assembly 5129010 $155.00 Time Remaining: 22d 13h 14m Buy It Now for only: $155.00 |
 NEW DETROIT DIESEL 60 SERIES OEM AIR COMPRESSOR HEAD GASKET $18.00 (1 Bid) Time Remaining: 2d 16h 57m |
 Detroit Diesel 5131807 Fast Idle Air Cylinder Assembly $99.99 Time Remaining: 22d 2h 38m Buy It Now for only: $99.99 |
 DOT semi air brake line 3 16 cummins or detroit diesel $12.50 Time Remaining: 4h 32m Buy It Now for only: $12.50 |
 USED DETROIT DIESEL 60 SERIES OEM DDEC III IV ACCESSORY DRIVE FOR AIR COMP $400.00 Time Remaining: 2d 16h 57m |
 dot semi air brake line cat cummins detroit diesel 1 ft $10.00 Time Remaining: 25d 5h 12m Buy It Now for only: $10.00 |
 USED DETROIT DIESEL 60 SERIES OEM AIR CONDITIONER COMPRESSOR $40.00 Time Remaining: 2d 16h 57m |
 Detroit Diesel 60 Series Charge Air Outlet Part 23508407 Superceded by 23539156 $65.00 Time Remaining: 19d 4h 48m Buy It Now for only: $65.00 |
 WEBASTO AIR TOP AT2000ST 12V DIESEL $993.75 Time Remaining: 21d 4h 22m Buy It Now for only: $993.75 |
 NEW DETROIT DIESEL 60 SERIES OEM STEEL BRAIDED AIR COMPRESSOR AIR LINE $50.00 Time Remaining: 3d 3m |
 Freightliner Charge Air Cooler Cummins Diesel $519.99 Time Remaining: 4d 15h 30m Buy It Now for only: $519.99 |
 Ford Sterling Charge Air Cooler Diesel Turbocharged $885.48 Time Remaining: 4d 15h 30m Buy It Now for only: $885.48 |
 USED DETROIT DIESEL 60 SERIES OEM BENDIX AIR COMPRESSOR GOVERNER $15.00 Time Remaining: 3d 17m |
 Kenworth T2000 Charge Air Cooler Diesel Turbo $994.48 Time Remaining: 4d 15h 30m Buy It Now for only: $994.48 |
 NEW DETROIT DIESEL 60 SERIES OEM DDEC V WATER PUMP AIR COMPRESSOR O RINGS 2 $5.00 Time Remaining: 3d 1h 24m |
 ALLENAIR 24V FAST IDLE SOLENOID GILLIG BUS DIESEL $35.00 Time Remaining: 9d 6h 56m Buy It Now for only: $35.00 |
 Diesel Kiki R 12 A C Compressor Air Conditioning 509630 4800 Kawasaki Loader $299.99 Time Remaining: 19d 10h 48m Buy It Now for only: $299.99 |
 NEW DETROIT DIESEL 60 SERIES OEM TURBO AIR HORN CLAMP $8.00 Time Remaining: 2d 16h 57m |
 Fleetguard AF25435 Diesel Air Filter for Cummins Det $60.00 Time Remaining: 2d 10h 21m Buy It Now for only: $60.00 |
Diesel Air
Marine Diesel Engine Maintenance
In a conventional marine diesel engine the power is produced by hot compressed air igniting fuel sprayed under very high pressure into the cylinder head. A marine diesel engine does not use a carburetor to mix fuel and air or spark plugs to ignite the mixture. Instead it employs the pistons to compress the air to 3000 kPa which causes it to become extremely hot and the fuel is ignited as soon as it is injected into the cylinder.
Some marine diesel engines are fitted with a heater plug in the inlet manifold or a glow plug in the pre-combustion chamber of each cylinder to provide additional heat to the combustion air during starting.
Diesel engines are heavier and slower revving than petrol engines but they are also more reliable because they do not rely on external carburetion or an electrical spark for ignition.
Newer engines use an electronic fuel injection system whereby fuel and air are mixed more thoroughly in the pre-combustion chamber before entering the cylinder. This system maximizes power and fuel economy and is also less polluting.
Every boater should have an understanding of how their engine works so let's start by explaining the mechanical cycles.
Most reciprocating piston internal combustion engines work on one of two mechanical cycles-either the four-stroke cycle or the two-stroke cycle. These cycles designate, in correct sequence, the mechanical actions by which the fuel and air gain access to the engine cylinder, the gas pressure - due to combustion - is converted to power and, finally, the burnt gas is expelled from the engine cylinder.
The Basic Four-Stroke Diesel Engine
From its name, it is obvious there are four strokes in one complete engine cycle. A stroke is the movement of the piston through the full length of the cylinder and - since one such movement causes the crankshaft to rotate half a turn - it follows that there are two crankshaft revolutions in one complete engine cycle.
The four strokes in the order they occur are:
1. Inlet stroke. With the inlet valve open and the exhaust valve closed, the piston moves from top dead center (TDC) to bottom dead center (BDC), creating a low-pressure area in the cylinder. Clean, filtered air rushes through the open inlet valve to relieve this low-pressure area, and the cylinder fills with air.
2. Compression stroke. With both valves closed, the piston moves from BDC to TDC, compressing the air. During this stroke the air becomes heated to a temperature sufficiently high to ignite the fuel.
3. Power stroke. At approximately TDC, the fuel is injected, or sprayed, into the hot, compressed air, where it ignites, burns and expands. Both valves remain closed, and the pressure acts on the piston crown, forcing it down the cylinder from TDC to BDC.
4. Exhaust stroke. At approximately BDC the exhaust valve opens and the piston starts to move from BDC to TDC, driving the burnt gas out of the cylinder through the open exhaust valve.
The Two-Stroke Diesel Engine
The two-stroke engine uses two piston strokes to complete one power stroke and, therefore, fire twice as often as a four-stroke engine. A two-stroke engine is smaller and simpler with fewer moving parts. A two-stroke engine has the potential to produce twice as much power as a four-stroke engine of the same size, however, because of the extra fitting required in a two-stroke diesel engine, for example blowers and governors, they become more expensive to produce. There has been a shift towards four stroke diesel engines which have become more efficient and smaller.
Protect Your Marine Diesel Engine
Protect your engine by avoiding long periods (more than 10 minutes) of idling in a "no-load" situation. This is often done to charge batteries or cool refrigeration but if done repeatedly it will glaze the bores of the engine and cause premature engine failure. If the vessel is in a berth the engine can be put in gear to create load at idle.
All boat owners should have an understanding of basic marine diesel engine maintenance to keep themselves and their families safe on the water.
About the Author
Chris Miley is an online author and a keen boater. You can find out more about maintaining your marine diesel engine at his website
Marine Diesel Secrets
and the
Pontoon Boat Site
.
In the News David Cameron. Is going to impose extra fuel duty on Petrol/Diesel and Air-travel?
My question is..... Are you sure you want to vote for this guy? Even more misery for poor motorists, We are going to be treated like criminals just for owning a car!!
Because Labour will never raise fuel duty, ever? How about the £15 level on speeding tickets. Speeding tickets weren't supposed to be a measure to raise taxes.
A criminal just for owning a car, how about a criminal for owning a home with a view when Labour's view tax kicks in.
I'm not a David Cameron fan but, he is the lesser of two evils.
Mercedes Benz Diesel Service Part 1 - Oil and Filter Change