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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. . w& }3 f5 V- J5 i
8 _- O4 z1 O1 d6 }
0 Y' ~6 u6 w+ TTech Sheet
# m6 F2 a: m6 h; a4 {‘Frequently Asked’4 _* G7 ~% k# | Z- G' s5 n& b
‘Turbo Questions’(In no particular order)
' ~# `2 a' F$ Q2 z# U% xYour turbocharger is engineered to match the specific requirements of the engine it is
( R* D- B" {8 V$ U0 l- b1 y4 \fitted to. Each is dependent on the other to maintain optimum performance. Don't
7 W9 m$ r% G8 l$ H$ t: z4 ]think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
, T, v9 n2 O# n" Yturbo's requirements are similar to the engine’s. It is, therefore, essential that
7 M5 C1 O; f7 wscheduled servicing, using good quality oils and parts, is central to caring for your% |4 T: d6 X) a' Y$ \
turbo.1 ^( {) C4 j( U6 `1 I2 [
In many instances Berrima Diesel receive turbochargers which have been
1 f8 f% @8 p$ V9 K- j( jmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
( b6 H: G3 i9 `* h, ]7 F# ~7 yIncorrect fault finding is often caused by a lack of product knowledge. Many
: n. n( L8 f) z6 q% \. ^contributory items around the engine bay can trick the unsuspecting into believing the
0 M; D0 D( }# `" ]turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
4 S% P, k& N* H! {3 X5 odiagnosed before a replacement turbocharger is fitted, the problem still exists!
N: e) D D( c% ], i* j' tWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
; q, _. z, o; {7 d* A) C1 ?0 u. u2 sturbo can be killed in many ways.* S7 H9 A& D+ u* p. B. I4 \4 C7 K
Foreign object damage results in either the air intake "compressor wheel" or exhaust, k9 i* ]) i/ |$ ?
"turbine" wheel being damaged. The former is often caused by someone accidentally! v0 M6 u$ q0 ]
leaving a nut or other foreign body in the air induction hoses. Please be extremely9 K# X/ o* n. I) M4 U: e/ M! m1 W' s
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
$ R& b4 j. ]" T' c3 Athis may be caused by part of an engine component, such as a piece of valve, exiting: [* a* I) J- k1 d
the engine in rather a hurry! In both cases it results in severe turbocharger damage4 R6 k5 h: X6 U9 f
instantly.% g3 ?& z9 l/ p
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
+ i1 l7 B- I$ Das 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
: u8 [& c/ F% M* O& }+ r$ B) `turbocharger many times, including final assembly. The balancing methods and
" j# G6 c( g F$ Y, ~$ w0 P0 W! x1 {procedures are unique. Without them, no turbocharger can be balanced to the ultrafine6 p8 J# y. I3 E. `* K+ u$ K* |
tolerances required for today’s high speed turbos. It is now common for
2 ^) c3 m* g* v3 R* Tturbochargers to spin up to 150,000 rpm +., L# v6 ~! d/ U8 N
That’s approximately 35 times faster than most diesel engines rev at the red line!( d% h* X0 \% V3 c8 r: _
Sophisticated machinery and highly trained factory staff ensure that the highest
, h5 t4 U7 G" @; n7 h- H' T( L# Ostandards are always maintained.
: K7 p9 X# h4 SUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are
# q7 G! p) z* j& W' Tto always allow the engine to warm-up fully, until the water temperature gauge( y$ ]$ i3 K G( S
reaches normal, before full throttle is used. Try to plan the end of your journey0 g D0 X: Y0 j% B* g1 y
sympathetically. Don’t use full throttle or allow the engine to labour during the last2 U# v x+ g% ~
few miles. This will prevent excessive heat build-up within the turbo when the engine
6 _$ r1 {, ~- _ T: ^' e: nis turned off. Also, when coming to a standstill, try to leave the engine idling for a
! f7 Q# [' v* q9 ~( S. }few extra seconds to allow the heat to decrease. No need for a timer though, just undo
+ `. C9 k2 P& x0 Z' Pyour seat belt first and then turn off the engine. Never rev the engine just as the
# ], `/ m9 T$ ]ignition is turned off. Remember the turbo spins at a far greater speed then the
3 K5 W. T; ?5 l/ k* k4 s- wengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
! ?9 M6 k7 i0 r, e" ewithin a few seconds. In reality, none of the above traits will cause a turbocharger to
9 }6 l- \8 b, n/ ~! Ofail immediately, but repeatedly over a long period, they could reduce the life of your% S- ]! X4 B9 k) Q! f1 H$ r
turbocharger.
+ G: G& {# L; O3 }; q" mIf it becomes necessary to seek advice about a turbocharger or a turbo related+ z# q" X. q8 c4 q; {4 Y
problem, always rely on a professional. Berrima Diesel, together with DTS( ` z* u5 A: Y E! G
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
; X5 {$ h. A$ [9 |# a0 j Zof the most experienced turbo installation companies in the world. We can advise
1 D; n( R" L5 Q, o# Jcustomers with turbocharged 4WD’s on a wide variety of questions and issues
; M; T c5 I7 |6 S; Zrelating to owning and running a turbo car., B2 d. o3 a) w
It cannot be stressed too much how important it is, when purchasing turbocharger3 v# }) n: j0 Z5 R% V
system, always to choose the top brand name -Berrima Diesel. Consider this. As with1 Y1 L4 |" x& k" f3 l6 M
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
. v6 b% T3 _; ]Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk! r" E- h% I% C) g% c# d2 |- M5 c
that your short-term saving may turn out to be a long-term nightmare.
* F* K7 X6 R8 |5 CWhat is 'Boost'?
6 R- [# X2 Y( @0 kBoost is a term used to describe the increase in pressure, provided by the2 _, \& i) E2 |" |8 P; q
turbocharger, to the volume of air, entering the engine. This pressure is expressed in) o8 E0 I& x3 b+ t
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
+ i# ?. P2 S8 x. X' zthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa+ v o+ N1 ^# T+ k% W- i. m; C
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
2 @, E, f8 X T) c* N% Youtput is increased. This pressure increase is called 'boost'.+ g8 {5 A3 U( T, T( ?
How does fitting a Dynamic Turbosystem effect the power of my* T+ u# _( C, k& t8 v- K. }6 c& E& v
vehicle?
5 U e( |+ x3 o% M) p& H; P) L- \Modern 4WD diesel engines, typically produce peak torque (pulling power), at
0 G1 E8 d# F* \* v3 V( taround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.' |( @! q9 r3 w2 D
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
! s( ~5 M: K% Q! }maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
8 s2 Z/ Y7 G* D1 `4 x, P8 Y Zpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,/ |& F( n2 J3 E7 f' U- ]
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
; \' Q2 u0 T# `7 |no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater! b# I' c" g; ?; b
than the standard vehicle at the same R.P.M.) U3 e; Q9 k0 s/ A! c
Can I fit a Dynamic Turbosystem myself and, if not, how long and/ D% K7 r% A e6 j5 e8 s9 b
what is the cost of having it fitted for me ? m: C, I, @* u. w
While most competent mechanics could probably fit a Dynamic Turbosystem,& l7 T5 d, X6 ` ~' N/ y) F$ H
tuning requires specialised knowledge. The lack of this knowledge could have- o& I6 w2 J$ l2 y$ ^- F& V. B
serious consequences. In addition, warranty can only be provided on Dynamic
$ m" n2 Q' W( K6 F" N" oTurbosystems which are installed by authorised facilities.
g: f/ G8 B" EThe cost of having the installation performed by Andrew at Berrima Diesel is
( z& u7 Z4 x, K! x1 _2 honly about 10% of the total purchase price. This provides a warranted, correctly
$ M2 O4 Z3 u4 m7 n" ctuned, "no hassle" installation for the customer. All diesel vehicle installation can be! F: u! h1 [3 q$ O$ y- r
performed in one day.
4 Z# @+ K3 w& V6 I; h1 O. ?; S$ c' K& vWhat creates the most heat? Fuel or turbo boost?
) x; T) {! G" |& ^4 E' s1 J$ NDiesels do not need an air control (eg. manifold butterfly valve. The only ones% t5 R- W% C0 W6 G& a' `
requiring a butterfly are vacuum operated governor pumps) to operate. The more air( ^, O1 l% d# ?/ Y1 G5 u
the better. Add too much fuel to the equation and the exhaust gas temperature2 B7 a: |% j1 C# m* [8 l
rises rapidly.
/ n5 L/ B$ [3 t) sWhat type of oil and how often should it be changed ?
+ y& U& y9 j% Y! P( V, S" T- O0 iTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic5 ]9 r: n! a U. S; {0 H3 E
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .# `# T' j3 U8 g+ F0 b
Change oil at intervals recommended by the vehicle manufacturer.9 r' x2 J/ H: L$ d/ t% V* x2 W
How long does a turbo last ?
$ V# b. @, r! `/ x; ]4 ZOn average, as long as the engine or longer with regular engine servicing and good' y! E V8 W" b6 K5 q. g# Y2 e
quality engine oil.: L! D6 b: U2 S6 C$ [& M
What is a ‘dump’ valve or ‘blow-off‘ valve ?& q/ h+ ^& w r$ Q; {4 D; r
A valve which relieves boost-pressure between the compressor outlet and engine as
6 r" c' H" B9 N1 x3 f. Hthe throttle is closed (Only required on throttle valve controlled diesels which are
8 [# i% ~" \# @$ i! R b& D' K0 jrarely seen these days). These are commonly fitted to hotted up petrol cars so it
: N4 ^! {8 @+ m' Y1 r7 esounds good changing gears among other reasons!% v, u0 a \6 o- l$ N5 L ?
Can I fit a turbo from another 4WD ?, Y6 {: k) k9 M4 E( g) K% D
No, virtually all turbocharger are different inside, even if they appear similar on the5 w2 y2 k: g: x. z
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the4 S1 K8 t; q4 |
specification.. B4 q( M& e' ^2 m# g& E0 z
Should I leave my engine ‘ticking over’ before it is turned off ?# x6 n3 \8 r9 ~2 d c
Not for normal every day driving, but still worthwhile if the engine has been under) {; {* F# a$ ]0 E( r H1 R; e
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
, F: x! {9 N5 J- Lincline.
; J, Q" T* N( |6 g! H2 EWhy is it important to balance a turbocharger ?
! E: e! i% k4 D. T! q! h! ?Without highly accurate balancing, vibration will create a whining noise, reduce i% C: O) x/ Z9 g2 o; C
turbo bearing life and reduce turbo efficiency.2 G5 Z" B0 M3 r7 _
How much boost does my turbo produce?
6 a! d n# t4 y1 ZCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
" K" D. g3 p1 q" e, cIntercooler turbocharged engines running upwards of 13PSI.& N; a- I4 d2 Q# K0 }9 U
How many psi in one bar ?7 U# Z7 S6 z9 p
14.7 psi = 1 bar./ ^7 K# V* R$ x% q( U E
Are all actuators the same ?+ y% z$ a# _- a6 F
No, each has a different opening pressure and rate.
' S$ l" E. }% d0 ZOil in the turbo inlet pipe - Should I be concerned ?& ?& U0 p- o3 f5 R- S
A small amount of oil usually exists, drawn in from the engine's crankcase breather
) P# n. I5 x# F6 |0 k6 T+ q* asystem. High engine wear will increase the amount of oil found, and will require
$ n! z8 b9 Q& Mfurther engine tests (not turbo).; q0 h& ?" a5 j
Should a turbo be serviced ?
3 B+ \* C2 E( d- ]No specific turbo servicing is required, but regular quality engine servicing is needed
! ], H# o1 d0 F3 {2 q" ~' Yto reduce the chance of turbocharger problems.
$ K( q9 C' b! w) @2 oWhat is a water-cooled turbo ?
* T, ^+ l7 m. D# X4 NThe central part of the turbo, housing the bearings, is surrounded by a water jacket
9 w2 I5 U; R) gthrough which the engine's water coolant is passed. This water continues to circulate
& |! [" C$ F4 a( E3 e! n' {2 B% Kafter the engine is turned off, cooling the turbo, and preventing heat soak.0 [+ t. E1 L R6 d, f; F
Do I need to up grade my exhaust ?3 \( I; v6 C5 h# x( \9 D% c
Generally not. Our systems are designed to run utilising as much genuine component1 e- g, b$ h1 ?6 ^9 K( ?
as possible. Some systems on the market promote exhaust change as it is required by0 _ {9 ^& s, s7 r+ I8 I
that particular turbo. Doing so usually picks up more noise than performance.
/ k6 F/ f: ~: ]+ sHow noisy should a turbo be ?# ?* }- t0 B: h9 w* q
Only an unbalanced, worn out or damaged turbo will produce any significant turbo; L6 c! H. V' Y: h' g
noise.4 a& N9 ]5 ^0 i4 M
What is an intercooler ?
7 u3 O N8 k' y5 V( e b0 aA special type of radiator which cools air before it enters the engine. As a turbo
6 L6 a; {( H* F& g( Mcompresses air, the air heats up. Power can be increased if the air entering the engine
) @& {- R, B' {$ j5 C, Qis cooler. The cooler air is more dense meaning that more fuel can be injected for
1 i' b. F5 q+ o/ R" kmore power.
+ o5 L; _ G9 Y! Y/ V$ `: uWill my vehicle run ‘cooler’ with an intercooler ?
3 T- Y, x) N! _: c$ Z, NTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles a1 v8 Y* |9 U0 o0 a' o0 {0 a
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot9 l$ P. ~% ^1 \1 W
air passes out of the Intercooler over the air conditioning condenser and finally the+ _, s7 e5 v. l' l. l
radiator. The poor old radiator is left with scraps of extremely hot air and then is
2 v, H( i I- z/ V7 k% v+ mexpected to cool the engine. We don’t advise fitting them as hot Australian conditions
) A+ v' ]! N! J4 Z9 B' ican often be the catalyst for engine heat problems.. H) _$ {1 K7 L4 G9 v' o; \
What will happen to my fuel consumption?7 A/ ]/ k8 u* h1 [1 E7 [" T
More power generally means more fuel. With a diesel turbo system, fuel consumption
9 ?. T( O" R9 G2 q1 rstays 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
