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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/ b: O; L) a" ?' [
‘Frequently Asked’6 z) B4 `4 \+ o3 @7 `
‘Turbo Questions’(In no particular order)) O9 ?: j# ^" C7 J; u
Your turbocharger is engineered to match the specific requirements of the engine it is
1 \7 i {; B3 \3 r3 pfitted to. Each is dependent on the other to maintain optimum performance. Don't
2 |; O7 v: ^8 X" A; L4 Dthink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
+ G7 K2 z! W7 r$ K c) Pturbo's requirements are similar to the engine’s. It is, therefore, essential that( b3 @7 |! O- ~$ z! a/ w7 K- m
scheduled servicing, using good quality oils and parts, is central to caring for your2 r9 t) g6 C/ F) I; I6 @; x9 D
turbo.4 M9 O( {; ~' O& ^$ a
In many instances Berrima Diesel receive turbochargers which have been7 A( c R+ Z+ {- D- F
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.1 C+ _" ^" s' p% g1 v2 T
Incorrect fault finding is often caused by a lack of product knowledge. Many8 }% I- [# N7 {' p% }
contributory items around the engine bay can trick the unsuspecting into believing the, X. [, K: t0 l5 |* v+ _, }
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
: C' I4 w/ L/ g' i z# ?# Cdiagnosed before a replacement turbocharger is fitted, the problem still exists!3 C) a7 Z% u P% G4 C/ Z
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
. X/ {' x3 Z0 [: X' bturbo can be killed in many ways.6 b! y- ~& m8 G/ v' a: E
Foreign object damage results in either the air intake "compressor wheel" or exhaust$ c, s9 T, D$ a
"turbine" wheel being damaged. The former is often caused by someone accidentally
5 k+ F& b3 M1 S- V. N m' Mleaving a nut or other foreign body in the air induction hoses. Please be extremely
- p' z3 x9 o/ Y6 C, j& T- bcareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
, }! F8 X6 i( Qthis may be caused by part of an engine component, such as a piece of valve, exiting
% N% H7 n+ i/ A* v) c, R) B4 Y# m& gthe engine in rather a hurry! In both cases it results in severe turbocharger damage7 z8 O Q* Q! L3 \/ J# u
instantly.
/ e, H* P5 ]) q) h- |Turbochargers are simple in operation, but manufactured to precise tolerances as fine
t+ T9 @5 s% @' x, i6 \as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
' _) f( k5 Y8 F3 yturbocharger many times, including final assembly. The balancing methods and
$ Q: f0 s, X3 P) z5 Lprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine
9 ]. y+ Y! h: j2 ?( etolerances required for today’s high speed turbos. It is now common for
9 K: X- M1 q. J* u' ^) iturbochargers to spin up to 150,000 rpm +.1 {, i# f4 U+ j6 S* C/ }/ r. s: }
That’s approximately 35 times faster than most diesel engines rev at the red line!
) b" y1 A [ nSophisticated machinery and highly trained factory staff ensure that the highest0 ]2 \3 l; X* K
standards are always maintained.
, A G( J# W' o1 V2 MUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are& y+ @: t6 O6 O1 H4 s8 N- o
to always allow the engine to warm-up fully, until the water temperature gauge
; F5 S" N1 j4 Q) N- v) Z- Zreaches normal, before full throttle is used. Try to plan the end of your journey7 L# R9 @+ H2 a# y. C' q* C3 @
sympathetically. Don’t use full throttle or allow the engine to labour during the last4 I8 A9 E! o9 t3 l& B; I) Y$ A3 x
few miles. This will prevent excessive heat build-up within the turbo when the engine
3 ?+ Y. I+ f2 F+ ?& h) Tis turned off. Also, when coming to a standstill, try to leave the engine idling for a8 g' f4 n0 B, F4 i" ~
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
* v5 C& v- h8 ~6 F( w: hyour seat belt first and then turn off the engine. Never rev the engine just as the
1 u* M3 a3 @8 C$ {$ A$ tignition is turned off. Remember the turbo spins at a far greater speed then the
9 u$ a) s4 D( l* |5 V8 Yengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases1 @" F2 g2 p7 Y% v" J; O1 o
within a few seconds. In reality, none of the above traits will cause a turbocharger to
$ `* K" I& a. s; m/ J$ ifail immediately, but repeatedly over a long period, they could reduce the life of your
! y7 g1 Z0 O9 uturbocharger.
" M+ e7 O$ ?8 m1 A" w. LIf it becomes necessary to seek advice about a turbocharger or a turbo related$ c0 ^' P, m" c2 h5 f
problem, always rely on a professional. Berrima Diesel, together with DTS: r1 L% L6 i# s8 n
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
- [! n8 {( d" k4 b1 {of the most experienced turbo installation companies in the world. We can advise
+ s- D" r. ` ~( O2 N, Lcustomers with turbocharged 4WD’s on a wide variety of questions and issues
5 g; L, E" _ R: X$ j$ F, u6 Erelating to owning and running a turbo car.- s7 f' i+ z8 c1 Q
It cannot be stressed too much how important it is, when purchasing turbocharger
G: @4 z2 i6 V* w6 vsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
V$ k7 e: A% ~; mso many things in life, quality costs, and there are sometimes cheaper turbos for sale. b$ v# [3 S. H, o
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk2 k: P( }% v2 e8 [
that your short-term saving may turn out to be a long-term nightmare.; w, Q3 |8 ^" m+ D+ d! `
What is 'Boost'?
- V; i2 k) T6 [# L0 Z+ g9 }: {Boost is a term used to describe the increase in pressure, provided by the" N+ B* I" q8 }8 u7 }7 t! U
turbocharger, to the volume of air, entering the engine. This pressure is expressed in
# S5 @% h4 E+ U2 q0 m- \) x- f. V4 F- ^a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same0 B) N. O" e8 y- ]1 B/ Z
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa. T9 Z% `0 \8 S6 H4 o( v
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power3 @+ G1 C/ Q5 K& Y
output is increased. This pressure increase is called 'boost'.
; I ]" E" S/ R6 m% WHow does fitting a Dynamic Turbosystem effect the power of my
7 k2 M: ^$ F& L4 s8 r1 Ivehicle?' ?. v3 J7 F3 ]/ Y; e
Modern 4WD diesel engines, typically produce peak torque (pulling power), at5 b- Q. @9 k5 F& ?6 a0 R
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
) x3 ^. q- p0 r# S" t" _Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
3 H2 }) e1 j. E6 @# u/ `; qmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
% c3 r' Z5 l7 D# |& _" zpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,
2 x, t8 Y' x) Q+ I Gat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At. f* u h9 d" \* U4 k# G
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater" i [1 i6 v8 M% l6 q& e
than the standard vehicle at the same R.P.M.
- C4 r5 Z5 u; NCan I fit a Dynamic Turbosystem myself and, if not, how long and
. `$ s3 T9 c' pwhat is the cost of having it fitted for me ?$ @! q' u& V# G: \
While most competent mechanics could probably fit a Dynamic Turbosystem,
; ?+ o- u. ^: D2 R8 B3 z* Jtuning requires specialised knowledge. The lack of this knowledge could have2 z! A+ m' W* h$ \) r) _! L
serious consequences. In addition, warranty can only be provided on Dynamic
/ g, u4 F: B% F" Z& Z0 _Turbosystems which are installed by authorised facilities.
. x: X' G2 S2 {) N A pThe cost of having the installation performed by Andrew at Berrima Diesel is' H+ v! j$ U7 v+ r
only about 10% of the total purchase price. This provides a warranted, correctly
! T5 o$ f6 h# l% \. s f3 dtuned, "no hassle" installation for the customer. All diesel vehicle installation can be! n, q, N# B" I' a: Q8 M' s
performed in one day.$ R) [- G% d* B" b' J
What creates the most heat? Fuel or turbo boost?
3 V8 ]- R1 l+ S: y: VDiesels do not need an air control (eg. manifold butterfly valve. The only ones. ]' Y P5 ?$ J: M
requiring a butterfly are vacuum operated governor pumps) to operate. The more air2 q0 ]3 g! L1 V" s" C
the better. Add too much fuel to the equation and the exhaust gas temperature
* i% I5 F8 n3 o4 D8 T1 N _rises rapidly.4 ?3 Q8 j6 Z; o# e5 s
What type of oil and how often should it be changed ?1 \+ |0 l4 Z& B+ g3 z
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
* ~& X. h3 @8 y/ A' r* Z, S: Dengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .+ J" }6 T& G( z G
Change oil at intervals recommended by the vehicle manufacturer.
5 ^4 u& }$ M# \7 bHow long does a turbo last ?' {6 b" H8 ~5 W( i# c; R
On average, as long as the engine or longer with regular engine servicing and good" G- j' X' @! c" q. \7 w
quality engine oil.
% e3 L, J6 |' j8 e1 h! R) rWhat is a ‘dump’ valve or ‘blow-off‘ valve ?: q5 T" v& T4 u2 k1 H" e9 b
A valve which relieves boost-pressure between the compressor outlet and engine as1 a6 s2 X: a6 c% v4 b
the throttle is closed (Only required on throttle valve controlled diesels which are
+ |4 s1 B; X' M8 T$ E; t. Zrarely seen these days). These are commonly fitted to hotted up petrol cars so it5 g) X* ^6 k j0 J; }8 _3 ?& B
sounds good changing gears among other reasons!
4 n) ]$ g( d2 g/ j. ]Can I fit a turbo from another 4WD ?
! U* x" I4 `1 u5 h* @No, virtually all turbocharger are different inside, even if they appear similar on the$ n% N8 f$ m# X+ B8 s
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the7 K/ k0 q7 {* M% o4 [) n3 l. f0 o
specification.+ ~! }7 }" |7 A
Should I leave my engine ‘ticking over’ before it is turned off ?
4 B5 ^2 d! ~% ~1 S: l0 c2 t' i$ JNot for normal every day driving, but still worthwhile if the engine has been under
9 J' E( w2 O6 j% gload or raced before being turned off. e.g. Towing a caravan or after climbing a long5 d3 c6 E' P8 J0 z( F
incline.9 g& b6 `8 \( v+ U
Why is it important to balance a turbocharger ?
8 J7 _: D' U& c/ Q7 P8 y# s v) _4 [Without highly accurate balancing, vibration will create a whining noise, reduce! i2 z, \. I7 y' C! F
turbo bearing life and reduce turbo efficiency.. | k8 x F Q4 U" ^+ \. p* F# G
How much boost does my turbo produce?2 r; k8 s! \3 b& z& z- U% i z* U
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
1 b3 {0 d; }4 B. @( QIntercooler turbocharged engines running upwards of 13PSI.7 Q* {* u0 O2 f z* U
How many psi in one bar ?9 k. L; B: j' b; s: U
14.7 psi = 1 bar.# L. k8 r- j" [0 t$ \+ w4 C
Are all actuators the same ?
6 M9 i5 n1 j1 E$ K1 R; m- h/ J! ANo, each has a different opening pressure and rate.
2 s. S0 T# K) FOil in the turbo inlet pipe - Should I be concerned ?) I% _; y# s- G5 ]* r* v3 t: x, R
A small amount of oil usually exists, drawn in from the engine's crankcase breather& N0 y5 z- D, Z# n+ W7 H
system. High engine wear will increase the amount of oil found, and will require
) a, V" l( t: T3 c0 S Xfurther engine tests (not turbo).
7 C( u5 M0 e3 I6 I7 A6 [Should a turbo be serviced ?) l1 b, Z$ U3 @- s( C. {+ g5 n6 {
No specific turbo servicing is required, but regular quality engine servicing is needed9 y& D, z. G7 F
to reduce the chance of turbocharger problems.
2 _, @+ P( S' i9 l8 g, _What is a water-cooled turbo ?
& G5 j; c% t$ T- c( sThe central part of the turbo, housing the bearings, is surrounded by a water jacket" Z" ?" d6 A# y
through which the engine's water coolant is passed. This water continues to circulate
6 C0 z7 f* B3 ]2 Z5 Z1 V& c7 M6 rafter the engine is turned off, cooling the turbo, and preventing heat soak.: G3 V: Q8 w# D" u) M$ ?
Do I need to up grade my exhaust ?* D6 S# q+ Q3 _ Y3 L, |
Generally not. Our systems are designed to run utilising as much genuine component) }1 W' T n! L
as possible. Some systems on the market promote exhaust change as it is required by' m1 L) K9 z. f9 x+ }" e! a
that particular turbo. Doing so usually picks up more noise than performance.$ J0 i) d& `# m6 n
How noisy should a turbo be ?. O, x& ]6 A6 r" H
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
6 ^6 |* ^0 K6 e6 Jnoise.- [7 I, V3 j* ?3 \1 d
What is an intercooler ?$ a. m( i- }! d" Y' M6 y4 `6 L
A special type of radiator which cools air before it enters the engine. As a turbo
0 u4 k/ g! b9 X" mcompresses air, the air heats up. Power can be increased if the air entering the engine
9 J3 o" }* N: N5 b3 Vis cooler. The cooler air is more dense meaning that more fuel can be injected for9 }: e6 ~2 y8 p8 ^# Y
more power.) T* K3 z0 p' `; B
Will my vehicle run ‘cooler’ with an intercooler ?
6 D( J: G# W" i! f2 A% _Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
- X! M3 q" g- E# drunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot4 o3 H( ^% A9 ?, Y3 N v
air passes out of the Intercooler over the air conditioning condenser and finally the8 z, C5 y! K( ], g- f0 N9 Z$ i* f! t
radiator. The poor old radiator is left with scraps of extremely hot air and then is1 d$ R) c/ B2 D
expected to cool the engine. We don’t advise fitting them as hot Australian conditions, A' f/ u0 @6 D, \7 I) n( W. a
can often be the catalyst for engine heat problems./ g1 H" ^* v Y+ @; X$ z6 c
What will happen to my fuel consumption?
' {" Y$ g5 Q) _- W" p- Q% LMore power generally means more fuel. With a diesel turbo system, fuel consumption2 D; \+ [2 t& F+ q
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
