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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.
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Tech Sheet
3 V; i0 {. M# |- T9 k) F! }# a‘Frequently Asked’
& J; W" Y8 t9 M. V+ G; s( C |, Q‘Turbo Questions’(In no particular order)
6 w- m. B7 w" ~8 t2 L; \; Z S/ nYour turbocharger is engineered to match the specific requirements of the engine it is
2 |( x( Q$ Z/ H( @4 d4 E/ U4 Q% jfitted to. Each is dependent on the other to maintain optimum performance. Don't. s" Q# c, Z1 h6 x# |
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The- d* U9 i3 ]: u2 Y; ~. L& c
turbo's requirements are similar to the engine’s. It is, therefore, essential that
/ ?' b4 K \3 F5 z6 r3 f6 l* @$ Kscheduled servicing, using good quality oils and parts, is central to caring for your0 M9 j# ~8 O( u, a9 H) t
turbo.
* l2 C& N: S% DIn many instances Berrima Diesel receive turbochargers which have been
) Y) s( N$ O) |& K9 s0 cmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
: {. u% X3 F- p. x' ~/ xIncorrect fault finding is often caused by a lack of product knowledge. Many
* _8 r' O' R$ x7 vcontributory items around the engine bay can trick the unsuspecting into believing the! r* s# s/ x. m$ @; h
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
" S1 w1 h( R8 A; ^& Mdiagnosed before a replacement turbocharger is fitted, the problem still exists!6 e' E5 Z" s) r0 X" _
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
' K8 n3 w" o8 j* G* fturbo can be killed in many ways.! \) j4 i; y, D H0 o( [
Foreign object damage results in either the air intake "compressor wheel" or exhaust
/ N- \" q# ], w"turbine" wheel being damaged. The former is often caused by someone accidentally
! D* H. @9 f* r' ?0 Yleaving a nut or other foreign body in the air induction hoses. Please be extremely$ N% b1 p' {5 E! ?' a3 `
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,- Z2 z, h$ W/ {7 p0 D
this may be caused by part of an engine component, such as a piece of valve, exiting! t Y+ c+ k) Q
the engine in rather a hurry! In both cases it results in severe turbocharger damage j9 e) Y. g' B
instantly.
/ i1 G, M, n0 K% FTurbochargers are simple in operation, but manufactured to precise tolerances as fine
: I* R/ B4 ]7 ^9 {( W$ Z; Das 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
3 j. S7 j8 M& d0 I yturbocharger many times, including final assembly. The balancing methods and
( _- c% T; p: U8 H6 t; \procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
8 |8 d( C8 J! Z5 ~; K( htolerances required for today’s high speed turbos. It is now common for6 {8 M1 C, ?+ k G4 B
turbochargers to spin up to 150,000 rpm +.: f S4 Q; @% l6 H+ m# Z7 \
That’s approximately 35 times faster than most diesel engines rev at the red line!/ ?$ n" `4 K2 V! q! t' f
Sophisticated machinery and highly trained factory staff ensure that the highest
- K0 H6 W3 o$ t+ lstandards are always maintained.0 K: o' C* g' h3 B7 Z
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
: B! |- S- J) i# W# Cto always allow the engine to warm-up fully, until the water temperature gauge
% x4 I' U; _ s/ }, ?reaches normal, before full throttle is used. Try to plan the end of your journey8 Y9 R6 p( V9 p; D. d. m) h
sympathetically. Don’t use full throttle or allow the engine to labour during the last
$ n1 p' D2 J% }. C* ufew miles. This will prevent excessive heat build-up within the turbo when the engine
: V# Z+ f4 _; x7 W! k) ois turned off. Also, when coming to a standstill, try to leave the engine idling for a$ j- r {) x- r; s
few extra seconds to allow the heat to decrease. No need for a timer though, just undo$ T- A& d, G2 q* _
your seat belt first and then turn off the engine. Never rev the engine just as the
) [: {8 Z9 w9 t( @' m' Tignition is turned off. Remember the turbo spins at a far greater speed then the
. l% P+ w1 {! @3 o7 C5 ?' M; qengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
0 y- l! e* u2 Xwithin a few seconds. In reality, none of the above traits will cause a turbocharger to
/ y1 l' p) F/ T/ J1 y( |% `0 G8 Pfail immediately, but repeatedly over a long period, they could reduce the life of your/ p" T; T+ Z" n3 X& G6 j* Z. s
turbocharger.
* O5 S4 Y8 k' T3 B# S) x. JIf it becomes necessary to seek advice about a turbocharger or a turbo related
, n! n* Q8 r" @2 m( y3 B9 B0 M0 Nproblem, always rely on a professional. Berrima Diesel, together with DTS
# L( V: d& R6 _turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one: s) G' E7 l& A3 a' C- D, u& J
of the most experienced turbo installation companies in the world. We can advise* |0 B! G# \! ^0 ?$ o
customers with turbocharged 4WD’s on a wide variety of questions and issues' J- K2 n* k6 a) z& R
relating to owning and running a turbo car.8 [: N0 I, `, f% M
It cannot be stressed too much how important it is, when purchasing turbocharger
* y+ i- |/ W; l# R7 q# |system, always to choose the top brand name -Berrima Diesel. Consider this. As with$ y$ X8 }4 Z) G/ t5 N
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.2 c9 F v1 [# l: N
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
" Q" {+ q$ v3 X! H4 B1 jthat your short-term saving may turn out to be a long-term nightmare.- C( q. y& X. _ F$ N7 w8 N
What is 'Boost'?
; \! s, k' d$ Q6 q5 w" s+ LBoost is a term used to describe the increase in pressure, provided by the; j! b0 j4 e0 B$ v: Z U" s
turbocharger, to the volume of air, entering the engine. This pressure is expressed in; i2 X- g w' B7 P1 ~% a j
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
/ x2 ~ i+ u: Gthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
7 U( S6 X/ b9 ^0 @/ d14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power9 K9 Y/ N( D9 F1 y
output is increased. This pressure increase is called 'boost'.2 R- ?! _: r9 J$ o2 }: P
How does fitting a Dynamic Turbosystem effect the power of my( G6 s" P: \7 F4 }8 J
vehicle?
1 |/ d! C2 n; A$ S ?7 `Modern 4WD diesel engines, typically produce peak torque (pulling power), at Q, t0 @: x2 K+ C
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
% e) e3 H) {) t+ oTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
^8 ^' n& \$ B6 p- hmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
5 I& N; w9 E: n3 j9 ?% V+ c& Ppoint, the percentage torque increase of a correctly tuned installation is approx. 40%,1 ]- H6 A0 i# G) i
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
8 j- ]2 }2 b, N6 ono point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater) J( K% [* m' W5 H' H
than the standard vehicle at the same R.P.M.
2 P& S3 A0 u% q( o% c/ gCan I fit a Dynamic Turbosystem myself and, if not, how long and" I& N4 h K4 O$ G
what is the cost of having it fitted for me ?
5 t* O9 j l6 ]6 r K5 `While most competent mechanics could probably fit a Dynamic Turbosystem,) ^8 r* ]1 r* Q" C+ ?5 s8 Q
tuning requires specialised knowledge. The lack of this knowledge could have4 w" q% |- T3 g* [8 s
serious consequences. In addition, warranty can only be provided on Dynamic
0 P Y7 |% Q- c1 gTurbosystems which are installed by authorised facilities.9 y$ W; n5 T0 G* f* s; @% K$ V5 g
The cost of having the installation performed by Andrew at Berrima Diesel is, ?. b. I$ v3 c
only about 10% of the total purchase price. This provides a warranted, correctly2 g0 ]6 }" l- s0 p- I/ E
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be% g- x% L3 ^7 d. w6 I+ Z
performed in one day.
7 Y6 i/ r, B8 x) \8 Q( yWhat creates the most heat? Fuel or turbo boost?) |0 T6 ~1 q: Y+ k) v; L3 u
Diesels do not need an air control (eg. manifold butterfly valve. The only ones. Z; \& m% E0 ]& u* E
requiring a butterfly are vacuum operated governor pumps) to operate. The more air# D; _, s$ e9 n3 }) r
the better. Add too much fuel to the equation and the exhaust gas temperature# t' f3 Z# q5 k- Z' r% C
rises rapidly.
- d8 `4 a" V4 Y# ^" c- ~1 UWhat type of oil and how often should it be changed ?
7 l `% {5 J: S4 DTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
) S! O. W# D2 E" C o5 w' wengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
# N; Q) F- G [& @1 _* ^Change oil at intervals recommended by the vehicle manufacturer.6 R5 {1 e5 o( Z# t X+ o1 A
How long does a turbo last ?" t8 F9 I; f2 D1 ]& b
On average, as long as the engine or longer with regular engine servicing and good6 K0 i4 Y2 f5 N* q! d
quality engine oil.& }/ G' E2 M9 g" J S- j: O
What is a ‘dump’ valve or ‘blow-off‘ valve ?
5 ~+ s7 E- c& j; }* uA valve which relieves boost-pressure between the compressor outlet and engine as
0 ~1 h8 ?! o" E1 kthe throttle is closed (Only required on throttle valve controlled diesels which are
; L/ O3 Y( X! M/ E0 f! c7 A8 V2 n+ Erarely seen these days). These are commonly fitted to hotted up petrol cars so it: E/ x3 V' @- j. H2 M, W5 H n5 c
sounds good changing gears among other reasons!
# s: v8 n4 ]4 W t% B2 UCan I fit a turbo from another 4WD ?
s5 o7 b; g- Q. PNo, virtually all turbocharger are different inside, even if they appear similar on the7 _4 t/ F1 H3 K: K
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
5 q' t3 ?- E% _; kspecification.& X, T: W) j3 R6 ^
Should I leave my engine ‘ticking over’ before it is turned off ?4 m8 ?& h( q3 m" B6 F$ k9 H: y
Not for normal every day driving, but still worthwhile if the engine has been under
. d$ }, P1 z& `* |3 z5 K6 N$ G; Z6 dload or raced before being turned off. e.g. Towing a caravan or after climbing a long ], T: }1 v- N$ w9 H F" J
incline.2 ]" V! M/ O6 I* p: F
Why is it important to balance a turbocharger ?
' ?2 R; S. d& H" g" {' B( j/ DWithout highly accurate balancing, vibration will create a whining noise, reduce1 A" I. j8 c2 o6 O* \! @
turbo bearing life and reduce turbo efficiency./ c& {( Q G* `: c5 [' j! t
How much boost does my turbo produce?; O# [9 o* r( U& o& ~+ Y1 |
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with) g& |! ~# v9 F1 k& @
Intercooler turbocharged engines running upwards of 13PSI.
- v/ z- W( p0 n6 O% D* sHow many psi in one bar ?
* D+ e$ ~: n8 m* `& B14.7 psi = 1 bar.' } E( Y' I* D% Z
Are all actuators the same ?9 P3 A# F" y# v+ R6 m- R1 \
No, each has a different opening pressure and rate.
( n, |# X) W" _( G0 wOil in the turbo inlet pipe - Should I be concerned ?
" S4 Z8 v, V+ g( {/ k. A/ [A small amount of oil usually exists, drawn in from the engine's crankcase breather/ [ {1 \8 t0 l: {* @2 A
system. High engine wear will increase the amount of oil found, and will require
) ~" t4 G/ @/ K) C: d/ ?, ufurther engine tests (not turbo).$ b' `, P/ P( p, R" b+ ~5 S! H- d
Should a turbo be serviced ?
! b% s' D2 | s0 D* aNo specific turbo servicing is required, but regular quality engine servicing is needed
" u5 N9 J" s0 r, l+ H5 H% y3 T2 Cto reduce the chance of turbocharger problems.% T- ^ Y) Z' U4 \' N
What is a water-cooled turbo ?5 x! N/ D' }3 Z( u) P+ C0 N
The central part of the turbo, housing the bearings, is surrounded by a water jacket L' o9 D& p/ q
through which the engine's water coolant is passed. This water continues to circulate
6 i6 V5 @0 d$ h7 w% B: x6 cafter the engine is turned off, cooling the turbo, and preventing heat soak.8 a" J2 p4 T0 z7 ?. u& Z
Do I need to up grade my exhaust ?* D9 |/ `8 s( Y& b
Generally not. Our systems are designed to run utilising as much genuine component
_# x( w7 c8 v1 J# k( D* F4 `as possible. Some systems on the market promote exhaust change as it is required by5 Q0 E7 m: o3 n: Y7 c
that particular turbo. Doing so usually picks up more noise than performance.
- t0 |$ o& |6 d" h. T5 ZHow noisy should a turbo be ?$ q* _ V& P! @
Only an unbalanced, worn out or damaged turbo will produce any significant turbo& K/ Q' G5 R3 U# j
noise.8 p6 M2 ~ m+ l( Q4 l" \& t% g/ F
What is an intercooler ?
( r$ S6 j, _4 ?A special type of radiator which cools air before it enters the engine. As a turbo
4 q+ |0 ?/ n5 l2 ?( w1 s# Icompresses air, the air heats up. Power can be increased if the air entering the engine
6 D2 L, |" o: Z9 |( k3 eis cooler. The cooler air is more dense meaning that more fuel can be injected for
8 _/ E& R3 }4 u2 ^0 ~) _more power.' }7 T6 E+ A- J, d+ p& z0 Q" E2 S
Will my vehicle run ‘cooler’ with an intercooler ?& i( q& | F5 O$ Y) l
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
1 m4 o7 f4 ~9 f1 N# Mrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot1 n+ }. y. y' M# t5 h+ L
air passes out of the Intercooler over the air conditioning condenser and finally the4 ]) n/ \# g( ?4 f" l
radiator. The poor old radiator is left with scraps of extremely hot air and then is
/ C0 i0 I3 |' j0 f! R6 Sexpected to cool the engine. We don’t advise fitting them as hot Australian conditions
; y4 U# U0 D$ L$ k* ?; t: A/ Zcan often be the catalyst for engine heat problems.5 @* R& B% m4 x
What will happen to my fuel consumption?$ g& c! y1 t- X) u# J0 m" ~. H& w
More power generally means more fuel. With a diesel turbo system, fuel consumption' |& ?* J4 l7 V+ q8 ?: e
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
