Post on 07-Aug-2018
8/20/2019 4-2 Stroke Diesel
1/36
1
Start...
8/20/2019 4-2 Stroke Diesel
2/36
2
Four Stroke, Two StrokeDiesel, & Wankel Engine
Theory and Operation
8/20/2019 4-2 Stroke Diesel
3/36
3
Four Stroke, Two Stroke,
Diesel, & Wankel TheoryPresentation Outline
1.0 Four Stroke Engine Theory• Internal o!"ustion priniples
• #al$e operation
• Four yles
• #al$e ti!ing
%.0 Two Stroke Engine Theory• Two yle operation
• u"riation
• #ariations
• 'd$antages( li!itations !ore...
8/20/2019 4-2 Stroke Diesel
4/36
4
).0 Diesel Engine Theory•Operation
•#ariations
•
'd$antages(li!itations
*.0 Wankel Engine Theory•Operation
•#ariations
•'d$antages(li!itations
8/20/2019 4-2 Stroke Diesel
5/36
5
1.0 Four Stroke Engine
Theory Intake
+o!pression
ower
E-haust
8/20/2019 4-2 Stroke Diesel
6/36
6
Intake Stroke
8/20/2019 4-2 Stroke Diesel
7/367
+o!pression Stroke
#al$es losed
8/20/2019 4-2 Stroke Diesel
8/368
ower Stroke
#al$es losed
8/20/2019 4-2 Stroke Diesel
9/369
E-haust Strok#al$e Ti!ing
Diagra!
8/20/2019 4-2 Stroke Diesel
10/3610
%.0 Two Stroke Engine
Theory p stroke
Down stroke
8/20/2019 4-2 Stroke Diesel
11/3611
/eed #al$e
Transer
ort
+ar"uretor
% Stroke
p Stroke
+o!pression
ours
+rank
+ase
8/20/2019 4-2 Stroke Diesel
12/3612
Intake
ower E-haust
OursTranser ort
/eed #al$e
% Stroke
Down Stroke
+ar"uretor
8/20/2019 4-2 Stroke Diesel
13/3613
Fuel 2i-
ses a pre!i- o gas and oil
Oil in3etors used in so!e
4or!al !i-es range ro! 1561 to
7061
Typial 8hot9 engines 1561
Typial 8ool engine9 7061
+:E+; OW4E/S 2'4'
8/20/2019 4-2 Stroke Diesel
14/3614
'd$antage o Two Strokes
/uns in any position
2ore horsepower or si=e
Fewer !o$ing parts
ighter
8/20/2019 4-2 Stroke Diesel
15/36
15
i!itations o Two Strokes
ses !ore uel than our strokes
Fuel and oil !ust "e !i-ed
lugs oul easily
oor e!issions
8/20/2019 4-2 Stroke Diesel
16/36
16
).0 Diesel Engine Theory
8/20/2019 4-2 Stroke Diesel
17/36
17
Introdution
•In$ented "y /udol Diesel "etween1>?% and 1>?)
• Internal +o!"ustion Engine
• /eiproating Engine• Inter!ittent +o!"ustion Engine
• tili=es li@uid uel
• +o!pression Ignition $s. Spark
Ignition
• :ea$y Duty 'ppliations
8/20/2019 4-2 Stroke Diesel
18/36
18
Diesel +o!pression /atio
%061 up to %761 o!!on
4eeded to ignite uel
4o spark plugs
8/20/2019 4-2 Stroke Diesel
19/36
19
+o!pression /atios
8S@uee=e9 on air(uel !i-ture "eoreo!"ustion
Eiieny inreases with higher +/
'"out ?61 on gas autos 1A61 to %*61 or diesel engines
'"out %*61 +/ !a-6
• too high o!pression or starting
• li!iting strength o !aterials
• power lossB leakage around $al$es
8/20/2019 4-2 Stroke Diesel
20/36
20
'd$antages o the Diesel
Engine• :igh relia"ility
• ow uel ost
•:igh power ( l". o engine
• ow uel onsu!ption
• ow ire ha=ard
•
:igh tor@ue at low /2• Creater heat eiienyB )0 %7 gas
• onger ser$ie inter$als
8/20/2019 4-2 Stroke Diesel
21/36
21
Disad$antages o Diesel
ower
Disad$antages o Diesel
ower E-pensi$e to repair
:ard starting in old weather
:igher initial ost
8/20/2019 4-2 Stroke Diesel
22/36
22
Casoline and Diesel Engine
+o!parison
Casoline and Diesel Engine
+o!parison Casoline power
stroke G *50 psiH
Diesel G 1%00psi Diesel heat
eiieny a"out
7 higher than
gasoline
8/20/2019 4-2 Stroke Diesel
23/36
23
Indution Syste!
:igh ressure
In3etion Spray
In3etion
ine
In3etor Deli$ering
Fuel
'ir Only
8/20/2019 4-2 Stroke Diesel
24/36
24
Clow lugs
/esistane unit to heat old engines
Installed in ylinder head, so!eti!es in
speial preBo!"ustion ha!"er So!e use intake heaters
In addition, "lok heaters or old weather
8/20/2019 4-2 Stroke Diesel
25/36
25
Typial Diesel Engine
8/20/2019 4-2 Stroke Diesel
26/36
26
*.0 Wankel Engine Theory
8/20/2019 4-2 Stroke Diesel
27/36
27
History of RCE
(Rotary Combustion Engines)
1?%* B Wankels idea or /+E
1?)) B patent was applied
1?)5 B patent reei$ed
1?7A B engine runs
8/20/2019 4-2 Stroke Diesel
28/36
28
One of Three Chambers
Apex Seal
Spark Plugs
Rotor
Intake
Port
Exhaust
Port
Epitrochoidal Bore
8/20/2019 4-2 Stroke Diesel
29/36
29
Rotor and Apex Seals
So!eti!es alled
a 8/otary iston9
/eei$es poweri!pulse ro! uel
air !i-ture
/otor has three
aes
'pe- seals at tipsB
like rings
'pe- Seal oation
8/20/2019 4-2 Stroke Diesel
30/36
30
Epitrochoidal ore
E!ore Sa!e purpose as
the ylinder walls
o the pistonengine
Epitrohoid ur$e,
generated "y
rolling a irlearound another
irle Jasi shape o epitrohoidur$e
8/20/2019 4-2 Stroke Diesel
31/36
31
/otors
Eentri
Shat
EBJore
8/20/2019 4-2 Stroke Diesel
32/36
32
8/20/2019 4-2 Stroke Diesel
33/36
37
Ad"antages and #imitations
Fewer !o$ing parts
Single !otion allows s!oother
running +o!pat engine, allows or !ore
spae
Few !anuaturers produe this
engine any longer
8/20/2019 4-2 Stroke Diesel
34/36
39
Su!!ery +ont
What are the !a3or dierenes in
parts "etween a % stroke & * strokeK
• orts $s. #al$es• /eed $al$e $s. #al$es
:ow is the uel ignited in a deisel
engineK• +o!pression
8/20/2019 4-2 Stroke Diesel
35/36
40
Su!!ery +ont
The /otory Wankel engine useswhat type o "oreK•
EB Jore What at like rings in a rotory
engineK•
'pe- seals 'ir an "e LLLLLLLLLL, while water
an notK• +o!pressed
8/20/2019 4-2 Stroke Diesel
36/36
The End