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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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0 |7 Y; H+ P hTech Sheet
: w) Q, X; a& f( ]% q‘Frequently Asked’
5 N& V2 g! U: ^‘Turbo Questions’(In no particular order)
* t3 o3 Z- P8 y# k$ M) KYour turbocharger is engineered to match the specific requirements of the engine it is
# }; x5 F4 j7 n1 a$ C6 S/ }fitted to. Each is dependent on the other to maintain optimum performance. Don't1 e8 A7 w# t6 p* ~" P1 _/ M
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
' ]; [; i) }7 `2 P$ t' N: S% Q6 ?turbo's requirements are similar to the engine’s. It is, therefore, essential that
) O4 C; D. K/ jscheduled servicing, using good quality oils and parts, is central to caring for your
b7 W* U# j# g& d- A7 K( l9 w, {. hturbo.
: |, g/ \* P, ZIn many instances Berrima Diesel receive turbochargers which have been% M, D* j" |& \; d5 @1 M' {
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
: a9 V% n5 c2 m1 w4 R/ T! iIncorrect fault finding is often caused by a lack of product knowledge. Many; s/ G7 z2 e) P4 |& j* G9 Z! H
contributory items around the engine bay can trick the unsuspecting into believing the
6 b% {3 k: y) i6 s s; ` d3 Uturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
! ]1 L/ E3 l' y3 ^diagnosed before a replacement turbocharger is fitted, the problem still exists!) h/ b2 z0 g- O1 i
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A/ \$ x, V2 U2 a/ Z* N, R I
turbo can be killed in many ways.7 R- [4 g4 Q! k7 q6 S0 s
Foreign object damage results in either the air intake "compressor wheel" or exhaust
& I* N3 @' B7 B7 y"turbine" wheel being damaged. The former is often caused by someone accidentally$ i/ y$ t% [ C# n* M$ M3 f
leaving a nut or other foreign body in the air induction hoses. Please be extremely# t' A Z; U! b, V( h
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,: ]7 X) N5 G" K2 z5 r3 U
this may be caused by part of an engine component, such as a piece of valve, exiting
; [( z# U0 {3 n- |) Q4 _the engine in rather a hurry! In both cases it results in severe turbocharger damage( u; g) [* t7 K' L' ~) s- Y
instantly.
. q- r1 w' B9 m! T, o- e! iTurbochargers are simple in operation, but manufactured to precise tolerances as fine2 M! _0 X9 L9 v; p- T
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single. U" G( s. ?$ h) L G
turbocharger many times, including final assembly. The balancing methods and4 E" D6 [# c2 t& N( X4 T
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
4 ]; | U+ x6 m7 V+ |tolerances required for today’s high speed turbos. It is now common for8 I8 [; s* E3 W- \( T! X, q
turbochargers to spin up to 150,000 rpm +.. M0 [4 s( P) H1 _5 _
That’s approximately 35 times faster than most diesel engines rev at the red line! Z V4 A; e; O3 E9 W
Sophisticated machinery and highly trained factory staff ensure that the highest
: V1 c: X4 ]- D) ]% Nstandards are always maintained." [! p! E5 M( r0 D' c
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are. f0 R# @5 W; [& C1 L6 T
to always allow the engine to warm-up fully, until the water temperature gauge
+ U2 l, l {9 B+ creaches normal, before full throttle is used. Try to plan the end of your journey& L9 g( Z% |* L! w
sympathetically. Don’t use full throttle or allow the engine to labour during the last6 b2 T+ L: V& D+ m5 k
few miles. This will prevent excessive heat build-up within the turbo when the engine
! k v* v7 r: F! {! ]0 j6 e' His turned off. Also, when coming to a standstill, try to leave the engine idling for a
* \/ J5 Y) t0 r) z9 r0 rfew extra seconds to allow the heat to decrease. No need for a timer though, just undo. m) \, S8 f' x9 m4 Z8 w/ [% w
your seat belt first and then turn off the engine. Never rev the engine just as the# W$ Y* u- b2 N0 u- S! E
ignition is turned off. Remember the turbo spins at a far greater speed then the
& a$ r/ P; P7 ]9 S% ]5 eengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases k9 }& V1 f1 i* n. [9 x
within a few seconds. In reality, none of the above traits will cause a turbocharger to
8 z1 l$ B4 Y7 L4 z% l' k' d- a: A! @fail immediately, but repeatedly over a long period, they could reduce the life of your4 K3 d: }( T- A! f- ^2 T. }
turbocharger.
0 K5 s+ W" D: D( H4 J8 QIf it becomes necessary to seek advice about a turbocharger or a turbo related3 `0 D& h, r4 Z; K
problem, always rely on a professional. Berrima Diesel, together with DTS2 |5 T, R1 P G; N" P/ N8 I
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one0 k/ c) m! S0 ]* K' x+ ~# q4 [: P
of the most experienced turbo installation companies in the world. We can advise
2 D' ]5 r5 W* E% @' E4 {- ucustomers with turbocharged 4WD’s on a wide variety of questions and issues- Z9 P( `: F5 G' d! k, ^5 \
relating to owning and running a turbo car.2 A( Y5 O3 e& q0 c/ X" t
It cannot be stressed too much how important it is, when purchasing turbocharger
- d3 e& P6 O0 k8 i, D+ [system, always to choose the top brand name -Berrima Diesel. Consider this. As with
- R- \) J. b$ _$ Eso many things in life, quality costs, and there are sometimes cheaper turbos for sale.6 m+ Y. f/ v* |. n
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk- l) l8 ?2 g1 k9 k2 r" ~& n8 l
that your short-term saving may turn out to be a long-term nightmare.
( K; f- w+ p) z0 n" Y! hWhat is 'Boost'?
8 U5 U1 o$ J( _: DBoost is a term used to describe the increase in pressure, provided by the: ~7 L4 x5 \- ?$ q
turbocharger, to the volume of air, entering the engine. This pressure is expressed in! ~5 @1 W8 P" d9 ]( b
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same# R% A1 I$ g2 y/ Q
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa" }! A/ v+ b$ u' }
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
' [& P4 y8 ~. D4 F/ Doutput is increased. This pressure increase is called 'boost'.& S& M+ Y9 N( T0 h( f, M
How does fitting a Dynamic Turbosystem effect the power of my
+ K/ q1 W' V, }0 \7 m, evehicle?
( H" O# }: h1 v" E: [4 X: L4 |Modern 4WD diesel engines, typically produce peak torque (pulling power), at
$ z- f4 E5 S! ^2 X' j2 ?around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
: s) r/ P. h5 y7 r' eTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
# ~# e# U% i# fmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
Y" B0 c: n( o1 u3 \; d5 Y. C/ l/ Hpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,$ L2 }) Z' r$ [. B, W& i+ B1 T. \
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At K; k. |* O* n8 O- N* B
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater$ u% T: @! z! ` i# L- F3 u
than the standard vehicle at the same R.P.M.0 d9 M- S3 z) Z$ w# v `/ @0 c
Can I fit a Dynamic Turbosystem myself and, if not, how long and4 }$ e" C+ S& `1 p* V4 H
what is the cost of having it fitted for me ?" ~* ]/ Z( u# \: A+ h
While most competent mechanics could probably fit a Dynamic Turbosystem,
; h' N4 M, i% ]7 A$ Xtuning requires specialised knowledge. The lack of this knowledge could have9 @% W) O7 `7 g
serious consequences. In addition, warranty can only be provided on Dynamic1 X6 |- n/ r2 M$ ]. Z' ]0 j" I
Turbosystems which are installed by authorised facilities.
# Y9 B9 V: s- o) @The cost of having the installation performed by Andrew at Berrima Diesel is
* B3 V0 ]* h- P. I3 B# monly about 10% of the total purchase price. This provides a warranted, correctly8 D) A9 r* L# o, Q
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be- m7 j0 @7 e2 T( U0 X3 N
performed in one day.# [$ o8 C, N' X0 s9 G: R! o: R
What creates the most heat? Fuel or turbo boost?
, G1 Q- n- M6 q# @* K7 }" dDiesels do not need an air control (eg. manifold butterfly valve. The only ones, L) h, _$ o# |# f0 [& v
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
$ I3 p# [! i( k* ~# b4 \the better. Add too much fuel to the equation and the exhaust gas temperature! h5 \, P' j+ j$ A$ ? R
rises rapidly.
9 q* e! U9 u: |2 c5 a+ x' TWhat type of oil and how often should it be changed ?
" b* }; U; T: t: l _Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
1 C' m( G7 m- @2 Q$ uengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .) e$ m+ B; c W7 x
Change oil at intervals recommended by the vehicle manufacturer.8 F3 ^: o# s' t" v, z1 U5 u' `; `# g* O
How long does a turbo last ?0 P2 e( s0 ]( z1 Y
On average, as long as the engine or longer with regular engine servicing and good
' k- I6 C( I/ B7 p o% Y$ B0 Nquality engine oil.
2 H7 k9 d- D' i, |! c5 uWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
, M8 l w2 W* N8 i$ m2 l2 DA valve which relieves boost-pressure between the compressor outlet and engine as! @$ |7 c+ v8 b6 E* d
the throttle is closed (Only required on throttle valve controlled diesels which are* x6 |8 ?7 O3 \5 _! I' `
rarely seen these days). These are commonly fitted to hotted up petrol cars so it, n# |2 q! s: P. m4 U
sounds good changing gears among other reasons!) ?1 c& t; L; o4 e+ g+ p
Can I fit a turbo from another 4WD ?* a' ?, I+ A3 K, R9 ~ \
No, virtually all turbocharger are different inside, even if they appear similar on the* D7 t% R0 F2 h* A4 M' H
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the q5 X: S1 t+ x$ Z! j
specification.
- ^$ y6 K7 E% U0 b) PShould I leave my engine ‘ticking over’ before it is turned off ?7 V M- d$ F" E3 V c9 c
Not for normal every day driving, but still worthwhile if the engine has been under
4 n1 \. p5 F. }7 p {+ @$ \% hload or raced before being turned off. e.g. Towing a caravan or after climbing a long8 c5 [1 i4 ]3 c
incline.
3 k0 K0 C% I$ e) r, } hWhy is it important to balance a turbocharger ?
) E, a6 v& @5 k! Z+ D% O3 TWithout highly accurate balancing, vibration will create a whining noise, reduce# ~, h G( E, t0 P
turbo bearing life and reduce turbo efficiency.. ?+ g2 N4 p4 N
How much boost does my turbo produce?8 }4 f' V( m! _1 s- ]
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
& D6 ?% Y: u0 ~ qIntercooler turbocharged engines running upwards of 13PSI.1 K: h6 N8 b0 P5 U% p. h$ A
How many psi in one bar ?
1 q) k7 n' K8 g5 T& y, }5 [14.7 psi = 1 bar.! c* l4 r# Z i) U& y
Are all actuators the same ?4 K4 K9 X _: p; n
No, each has a different opening pressure and rate.2 q) p$ X" l, i, d
Oil in the turbo inlet pipe - Should I be concerned ?4 S8 ]8 {4 D6 r
A small amount of oil usually exists, drawn in from the engine's crankcase breather
2 r' H. ]9 Z' Y0 R. csystem. High engine wear will increase the amount of oil found, and will require
+ D5 W" L4 J' I) M8 Mfurther engine tests (not turbo).
' V" F# p: M( X O' h& xShould a turbo be serviced ? L6 r9 d: G* w8 e
No specific turbo servicing is required, but regular quality engine servicing is needed1 f& [; T6 R* z) J/ [
to reduce the chance of turbocharger problems.
; F ], T& p+ FWhat is a water-cooled turbo ?- ?% w# E; Q+ u0 Q& L2 Z- P/ \! F5 p! F
The central part of the turbo, housing the bearings, is surrounded by a water jacket+ s: w3 V0 J) \7 h0 |' X
through which the engine's water coolant is passed. This water continues to circulate. r" i. {# }# H9 f9 K4 r) L
after the engine is turned off, cooling the turbo, and preventing heat soak.
! T3 x @( s y. LDo I need to up grade my exhaust ?
) f9 K2 J1 Z: r4 }1 O$ sGenerally not. Our systems are designed to run utilising as much genuine component
& X1 q5 @% r3 R: gas possible. Some systems on the market promote exhaust change as it is required by
4 C) d7 _) A3 n: T# K4 o( q; Athat particular turbo. Doing so usually picks up more noise than performance.6 }& o/ ], e7 o2 y# j
How noisy should a turbo be ?
3 z$ D* F7 b. H1 O2 Z- e2 TOnly an unbalanced, worn out or damaged turbo will produce any significant turbo8 x; B, n* @6 R' x% I
noise.
& ]7 I. O1 {( B8 F8 T& DWhat is an intercooler ?, N( B! f1 @* G( G9 f0 m
A special type of radiator which cools air before it enters the engine. As a turbo8 Z! [8 G8 Y# C9 w8 Z0 y: v0 e7 c
compresses air, the air heats up. Power can be increased if the air entering the engine/ c" P5 I. f$ v2 Q, T1 E
is cooler. The cooler air is more dense meaning that more fuel can be injected for& F; S6 P4 m# n
more power.; c! i7 n! S# @* Z
Will my vehicle run ‘cooler’ with an intercooler ?
- |( @& C& B' h2 K2 `Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
P8 l# D/ {9 K5 f% g9 Arunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot/ m7 O% \- V5 v
air passes out of the Intercooler over the air conditioning condenser and finally the0 Y( h, g- |1 ~" a# `# i
radiator. The poor old radiator is left with scraps of extremely hot air and then is* k3 e. `+ u' q# a/ @* i
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
( G% r6 Z/ j7 L+ p/ J! Zcan often be the catalyst for engine heat problems.5 w P7 e6 Q5 X0 ?% _- j( F, g
What will happen to my fuel consumption?
0 u2 j: D" y/ U/ C9 xMore power generally means more fuel. With a diesel turbo system, fuel consumption+ A% m! Q- d- G c4 N: 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
