This document summarizes the main components of a diesel engine. It describes the structural parts that support the running parts and systems. The structural parts include the bedplate, frame, cylinder block, cylinder liners, and cylinder head. The major running parts that convert combustion energy to mechanical work are the piston, piston rod, crosshead, connecting rod, and crankshaft. The document also briefly outlines the systems for air/exhaust, fuel injection, lubrication, and cooling.
This is a second slide in the IC engine series. Here you will learn about different components of IC engines. All the slides have beautiful graphics for better understanding.
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An internal combustion engine is a device in which the chemical energy of the fuel is released inside the engine and used directly for mechanical work.
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The diesel engine was invented during the industrial revolution by a German engineer. Rudolf Diesel grew up in France but then left for England during the Franco-German war. ... By studying thermodynamics, Diesel found he could make a smaller, internal combustion engine that would convert all heat into work.
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ALL ABOUT AUTOMOBILE COMPONENTS MATERIAL .IT IS VERY USEFUL FOR TO KNOW ABOUT MATERIALS USED FOR AUTOMOBILE COMPONENTS. AND ALSO THE PROCEDURE OF MANUFACTURING PROCESS OF AUTOMOTIVE COMPONENTS.
The diesel engine was invented during the industrial revolution by a German engineer. Rudolf Diesel grew up in France but then left for England during the Franco-German war. ... By studying thermodynamics, Diesel found he could make a smaller, internal combustion engine that would convert all heat into work.
this presentation explains the engine components and 4 stroke cycle engine operations. it also includes other activities that might help the students in understanding the 4 stroke cycle engine operation.
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3. Structural parts
PURPOSE:
- to support running parts
- to keep them in position and line
- to provide jackets and passages for cooling water,
sumps, for lube oil
- to form protective casing for running parts
- to support auxiliaries (valves, camshaft, turbo
blowers)
4. Running parts
PURPOSE
- to convert the power of combustion in the cylinders to
mechanical work
5. Systems
PURPOSE
- Supply of air
- Removal of exhaust
- Turbocharging
- Supply and injection of fuel
- Lubrication
- Cooling
6. Structural parts
bedplate
frame or column
engine or cylinder block
cylinder liners
cylinder head or cover
7. Bedplate
foundation on which the engine is built
must be rigid enough to support the rest of the
engine and hold the crankshaft which sits on the
bearing housing in alignment with transverse girders
at the same time, the bedplate has to be flexible
enough to hog and sag with the foundation plate to
which it is attached and which forms part of the ship
structure
10. Frame
load-carrying part of an engine
it may include parts as the cylinder block,base, sump
and end plates
in two-stroke engines, frames are sometimes known
as A-frames
12. Cylinder Block
=engine block
part of the engine frame that supports the engine
cylinder liners, heads and crankshafts
cylinder blocks for most large engines are made of
castings and plates that are welded horizontally and
vertically for strength and rigidity (stiffener)
entablature = cylinder block which incorporates the
scavenge air spaces in two-stroke engines
14. Cylinder liner
a bore in which an engine piston moves back and
forth
replaceable
the material of the liner must withstand extreme heat
and pressure developed within the combustion space
at the top of the cylinder, and at the same time must
permit the piston and its sealing rings to move with a
minimum of friction
17. Cylinder head
= cylinder cover
• the space at the combustion chamber top is formed
and sealed by a cylinder head
• the cylinder head of a four-stroke engine houses
intake and exhaust valves, the fuel injection valve, air
starting vale, safety valve
(the two-stroke engine lacks the intake valve)
19. Major running parts
piston
piston rod
crosshead
connecting rod
crankshaft & its bearings
20. Piston
one of the major moving parts
crown
skirt
must be designed to withstand extreme heat and
combustion pressure
made of cast iron or aluminium (to reduce weight)
24. Crosshead
the crosshead pin connects the piston rod to the
connecting rod
crosshead slippers are mounted on either side of the
crosshead pin
the slippers run up and down in the crosshead guides
and prevent the connecting rod from moving
sideways as the piston and rod reciprocate
25. Connecting rod
it is fitted between the crosshead and the crankshaft
it transmits the firing force, and together with the
crankshaft converts the reciprocating motion to a
rotary motion
27. Crankshaft & its bearings
one of the largest moving parts
it consists of a series of cranks formed in a shaft
converts reciprocating motion of the piston into
rotary motion
counterweights for balancing purposes
31. Arrangements for the air supply
and gas exhaust:
valves (inlet & exhaust), valve gear (camshaft &
camshaft drive, push rod, rocker arm, spring),
manifolds, scavenging and supercharging
(turboblower systems)
33. Engine Parameters
Cylinder bore – inner diameter of the cylinder (in
mm or cm)
Stroke – the distance the piston travels between top
and bottom dead centers (in mm or cm)
Engine speed – speed at which the crankshaft
rotates (measured in revolutions per minute)
Maximum Continuous Rating (MCR) – the
designed maximum power which a diesel engine is
capable of delivering continuously, at nominal
maximum speed, in the period between two
consecutive overhaulings