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NO SPEAKING, LAITY
This is my first time to address here. XIAO FENG CAN YUE wants me to tell guys how to drive a turbo car correctly so that everybody can benefit it and identify who is correct and who is a laity but which made so much boring noise. Please see the attachment that tells you how to deal with a TURBO. Do pay attention to BOOST R.M.P, PEAK TOUQUE R.M.P, and PEAK HORSEPOWER R.M.P. 4 i% \1 R. h8 \/ m( C9 }
$ {* ]! m2 ^* G( M
& P5 ^6 X. Q9 UTech Sheet
3 `# q/ P! k7 ]+ p* ^. u‘Frequently Asked’! O4 y* v8 n7 p I. H
‘Turbo Questions’(In no particular order)4 T0 K- Z2 U l! f
Your turbocharger is engineered to match the specific requirements of the engine it is! B8 O9 [0 N3 i) j( r" i
fitted to. Each is dependent on the other to maintain optimum performance. Don't8 ^# P# c" q% D& y# f3 b: V
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The( v+ M* u, `0 i% U
turbo's requirements are similar to the engine’s. It is, therefore, essential that
- w I- |; O$ oscheduled servicing, using good quality oils and parts, is central to caring for your
9 S! C2 [: f* fturbo.
9 N4 {% d) u) i0 ZIn many instances Berrima Diesel receive turbochargers which have been
0 C d4 \4 o) g$ Smisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
+ S% ], Y1 {9 | x; s8 MIncorrect fault finding is often caused by a lack of product knowledge. Many
* }3 z2 K' Y7 F" ^' T# E* S5 h4 dcontributory items around the engine bay can trick the unsuspecting into believing the% K- s7 S+ S& l! M+ b! a4 q9 D
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not1 `% k1 u# m( F9 S7 j/ ]# \
diagnosed before a replacement turbocharger is fitted, the problem still exists!
2 Q. t# v5 }9 V# g- G: ]# gWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A& y8 k5 y! v. L, |/ B
turbo can be killed in many ways.3 F6 G4 K' o; l) x5 K: V
Foreign object damage results in either the air intake "compressor wheel" or exhaust
) j' d' D/ c' T. W- q' d"turbine" wheel being damaged. The former is often caused by someone accidentally! R% F% _$ j A' Q6 w; c; [4 v j
leaving a nut or other foreign body in the air induction hoses. Please be extremely, w; r5 Z6 n0 x, B
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
$ I4 d5 p% t: ?1 u, d; Othis may be caused by part of an engine component, such as a piece of valve, exiting
Z& k! |4 X! tthe engine in rather a hurry! In both cases it results in severe turbocharger damage
# g/ ~7 u$ f5 d" Einstantly.4 i b5 F1 {$ K+ t! S& }8 N
Turbochargers are simple in operation, but manufactured to precise tolerances as fine, x! J0 B/ x$ D; S1 ?
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
) T) z+ |' k u. H2 Aturbocharger many times, including final assembly. The balancing methods and
, D& _# m1 b1 i w- `7 i: O' {, Qprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine
6 r. g' i' g0 e; atolerances required for today’s high speed turbos. It is now common for
- y. o& F% C# p5 _5 F& ]# zturbochargers to spin up to 150,000 rpm +.
# r. ^1 ^7 J, I% m& LThat’s approximately 35 times faster than most diesel engines rev at the red line!5 p F Y; j# u
Sophisticated machinery and highly trained factory staff ensure that the highest
+ A; J$ A; y* c- o% estandards are always maintained.+ g, a v' {* m; \5 N
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are4 o9 c) d7 J3 a- S
to always allow the engine to warm-up fully, until the water temperature gauge( {8 k- j6 A- y& c
reaches normal, before full throttle is used. Try to plan the end of your journey
; _: A# S* I2 f( xsympathetically. Don’t use full throttle or allow the engine to labour during the last+ x- a! n: b9 [6 X% R: k5 m
few miles. This will prevent excessive heat build-up within the turbo when the engine
q! m; f1 W; F4 E8 d0 S! eis turned off. Also, when coming to a standstill, try to leave the engine idling for a" ~7 v* N5 i. X/ B/ Y
few extra seconds to allow the heat to decrease. No need for a timer though, just undo2 ^+ a; K' M; F- V, O4 q
your seat belt first and then turn off the engine. Never rev the engine just as the/ O: a x7 ?7 a
ignition is turned off. Remember the turbo spins at a far greater speed then the
4 G! g+ p9 l$ u% g8 a# i4 \engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
# u0 e0 n5 V+ Y5 b* U+ Q; }% r1 zwithin a few seconds. In reality, none of the above traits will cause a turbocharger to9 n: q/ W* b# H
fail immediately, but repeatedly over a long period, they could reduce the life of your( ^ T* U( H* x! V3 V
turbocharger.0 N7 {$ O+ c$ R0 d+ a
If it becomes necessary to seek advice about a turbocharger or a turbo related
4 G( z/ N4 G5 A W5 k' qproblem, always rely on a professional. Berrima Diesel, together with DTS0 l" ?6 W4 G' U; t) @5 Z: i0 o
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
& f9 R( V$ d: l! r- ]& a- W K2 f0 _of the most experienced turbo installation companies in the world. We can advise
: Z" A$ h" ` e% rcustomers with turbocharged 4WD’s on a wide variety of questions and issues+ [+ o4 l+ B6 p% a5 K' _
relating to owning and running a turbo car.7 y) v+ m' W& e) l) f
It cannot be stressed too much how important it is, when purchasing turbocharger
) R/ D5 a; q5 s5 bsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with- i) k: B! L1 `+ q0 C
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
7 ]; q+ G# s7 CWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk( n6 A* u' i( q
that your short-term saving may turn out to be a long-term nightmare.) s" { E7 a! w1 T' i
What is 'Boost'?
5 a/ D2 K8 r/ d2 ]! NBoost is a term used to describe the increase in pressure, provided by the r' x O6 Z7 l) w3 W
turbocharger, to the volume of air, entering the engine. This pressure is expressed in( V% v9 P$ U2 X/ k' U: Z
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same) {# O* A: k) t/ j; E
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
$ g+ I3 p7 Y& ^7 x: d14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power& E! F$ _' A" C
output is increased. This pressure increase is called 'boost'.
( g! u/ z5 F( Q) a+ F eHow does fitting a Dynamic Turbosystem effect the power of my
; Z1 V! Q' M/ e. hvehicle?- m2 P7 j$ X8 F% K$ {
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
; |' n& I. b6 L8 `$ P$ K, earound 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.6 j/ N9 m* e% `- E/ T% n
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its( h+ Z/ R: \% Y" ^
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this! W) y; D9 a- a d7 [
point, the percentage torque increase of a correctly tuned installation is approx. 40%,; R |0 w7 [- H( m) \
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At6 T" i+ e) t+ ?
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
( K6 W* [0 B5 Z7 I. P" X6 Othan the standard vehicle at the same R.P.M.! v9 _; Q; y- t- n4 p+ j
Can I fit a Dynamic Turbosystem myself and, if not, how long and) J X# Y# t( G3 _
what is the cost of having it fitted for me ?
4 A' b( I( T' C/ w% C; V9 n" @While most competent mechanics could probably fit a Dynamic Turbosystem,
7 W' Z$ D% I! D3 x, r2 K# K! U" g& l1 {tuning requires specialised knowledge. The lack of this knowledge could have
+ p1 J1 |& p. p: Q2 v7 Lserious consequences. In addition, warranty can only be provided on Dynamic
, s8 u) h8 \; S p2 K3 V/ h8 u7 m* BTurbosystems which are installed by authorised facilities.
: h+ N: D, A! [0 nThe cost of having the installation performed by Andrew at Berrima Diesel is
D* Y5 P7 G( h! v# Conly about 10% of the total purchase price. This provides a warranted, correctly
5 L) k& J$ W7 C. W; t [+ \+ ftuned, "no hassle" installation for the customer. All diesel vehicle installation can be: Q4 w/ X9 s4 I
performed in one day.
z0 j/ \% F ?& C. p: IWhat creates the most heat? Fuel or turbo boost?
6 ]8 U7 M- Z$ eDiesels do not need an air control (eg. manifold butterfly valve. The only ones
/ A3 B6 b5 M$ }& C5 e) s. H+ Irequiring a butterfly are vacuum operated governor pumps) to operate. The more air
w# v: |# t! N* B$ l5 B$ W* k) q9 Sthe better. Add too much fuel to the equation and the exhaust gas temperature" j' u, m' t& ^3 m& f, r1 z
rises rapidly.1 r$ A* w; H5 t$ W
What type of oil and how often should it be changed ?( z' q, a7 `* J6 }* K8 I8 J) q
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
9 ?/ k3 h/ X9 G# {& a. R3 Zengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .. }5 X: r* n6 f# \4 e; n
Change oil at intervals recommended by the vehicle manufacturer.$ o; f* K A# P, a a6 b- j( O
How long does a turbo last ?+ ~0 C1 U2 S& J4 f. C* l
On average, as long as the engine or longer with regular engine servicing and good: o5 k7 w& {; ~
quality engine oil.
/ p$ P- |5 @; ?' s8 R+ mWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
' C' {1 Y6 w) v; w5 ^% J; ?A valve which relieves boost-pressure between the compressor outlet and engine as e- G, e4 @1 ]) ?0 X
the throttle is closed (Only required on throttle valve controlled diesels which are3 y" }) w% Z" @
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
' \' l% R3 `4 qsounds good changing gears among other reasons!
8 _4 K. H) X- @8 W7 m- F( w* h: K# oCan I fit a turbo from another 4WD ?: w" L- V+ L9 B2 L! Z5 g a
No, virtually all turbocharger are different inside, even if they appear similar on the1 I/ w3 _- n# N% U2 B9 y( }8 M
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the1 ~# C7 M8 l; C2 P
specification.
1 A) f4 [% ^$ Q' Y6 S8 C7 CShould I leave my engine ‘ticking over’ before it is turned off ?
# ~) F% {1 J, t- e3 w4 wNot for normal every day driving, but still worthwhile if the engine has been under& B. h5 V6 g" o- N
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
5 B& V. e0 }- z, l# x+ _1 lincline.. Y/ I/ o5 c$ K1 W! P
Why is it important to balance a turbocharger ?
/ R [/ f3 o* U4 \7 U* u& cWithout highly accurate balancing, vibration will create a whining noise, reduce7 e P# j. Y* D, m5 s6 n% V1 [ J: P
turbo bearing life and reduce turbo efficiency.
' J6 A1 O: V% z$ |/ i/ j0 ZHow much boost does my turbo produce?
3 y" P+ D" }& e4 k* I1 P% OCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
/ n$ b$ \- [( }" ^ X2 w! rIntercooler turbocharged engines running upwards of 13PSI.
; Q: C: @$ ]" v, m: r( }How many psi in one bar ?
! e# y, x, e' u, B" u8 n14.7 psi = 1 bar.3 L8 w! J n/ ?
Are all actuators the same ?1 s% R$ T- |) ^+ E& U% [4 d, Y
No, each has a different opening pressure and rate.7 ]: T7 w5 n0 c& B9 s y
Oil in the turbo inlet pipe - Should I be concerned ?
; l& ~1 z- _4 |4 o1 h$ I. v6 YA small amount of oil usually exists, drawn in from the engine's crankcase breather6 c5 u, B' `* T. K+ D' U4 E
system. High engine wear will increase the amount of oil found, and will require: P+ \: u7 }1 d$ G0 }5 Y u5 Z, v
further engine tests (not turbo).
+ L1 c" L/ _* n3 C7 oShould a turbo be serviced ?
/ B7 g% n+ f6 b: }3 D8 INo specific turbo servicing is required, but regular quality engine servicing is needed s; ^; z2 q: ]3 e) P3 A" @
to reduce the chance of turbocharger problems., b+ F, l& \& q6 [1 b5 Q- b
What is a water-cooled turbo ?% v0 T1 @/ y) c/ e
The central part of the turbo, housing the bearings, is surrounded by a water jacket& l3 D8 B7 ?! R8 V, P" r6 B
through which the engine's water coolant is passed. This water continues to circulate0 H+ D/ W8 |+ Z% o- G' d0 t
after the engine is turned off, cooling the turbo, and preventing heat soak.
1 R) X. n+ p, N* p% I3 M# wDo I need to up grade my exhaust ? A( P: |! V/ C/ r$ S) `
Generally not. Our systems are designed to run utilising as much genuine component
- a+ C# H/ }* f9 Z3 y: Jas possible. Some systems on the market promote exhaust change as it is required by
8 [/ E+ @% B% P, Jthat particular turbo. Doing so usually picks up more noise than performance.$ j- k; S: V' }9 Y
How noisy should a turbo be ?& g8 k* K5 g: _# b
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
0 u7 _' l4 s5 o X: f* P6 w& Dnoise.2 F; ^0 D+ B9 Y7 x H' ^( d
What is an intercooler ?) ~$ z' c* |) }+ ^, [+ {* V- F
A special type of radiator which cools air before it enters the engine. As a turbo
1 U2 A; \% n7 Z5 Ucompresses air, the air heats up. Power can be increased if the air entering the engine9 u. f+ y" S. z
is cooler. The cooler air is more dense meaning that more fuel can be injected for, B( {! ^5 ?4 ^" P8 N
more power.
6 F; Z; m0 ] y- _6 D; J, [Will my vehicle run ‘cooler’ with an intercooler ?
1 O1 I% k3 F( q4 ^& N9 qTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles& h ~" p2 l7 n7 }. {' I
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot1 f+ p0 b) a% f2 Q7 w* Q; s [
air passes out of the Intercooler over the air conditioning condenser and finally the+ C3 Z4 t" p2 Z. Y% V; }6 P" Z" `
radiator. The poor old radiator is left with scraps of extremely hot air and then is% K- @/ p! ?& ^: j' ?2 V
expected to cool the engine. We don’t advise fitting them as hot Australian conditions- ^; U, o2 Q+ X8 O- D
can often be the catalyst for engine heat problems.
4 B& p2 ^. V8 m+ S; W# CWhat will happen to my fuel consumption?
; t1 t+ T5 z( H9 Z2 _7 gMore power generally means more fuel. With a diesel turbo system, fuel consumption% B& `9 `! x2 L3 p; F/ @" p1 j
stays generally the same and can become better under towing conditions |
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楼主: 晓风残月
狗仔卡
发表于 2008-7-10 11:10
显身卡
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发表于 2008-7-11 09:19
