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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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1 s" x% X+ ]# T8 lTech Sheet
7 j' y5 a# m! _9 T" D$ ]6 m‘Frequently Asked’! E q/ w) t& ^9 x
‘Turbo Questions’(In no particular order), e- q l! Y8 ^) ^( x& s1 H
Your turbocharger is engineered to match the specific requirements of the engine it is
! t0 K! R5 M3 Zfitted to. Each is dependent on the other to maintain optimum performance. Don't
8 Y3 q9 j$ x1 `2 d+ H9 J. `think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The& C7 k- g. K# B, p( S1 T ~! r
turbo's requirements are similar to the engine’s. It is, therefore, essential that }3 P& v. P' i8 X% b, r
scheduled servicing, using good quality oils and parts, is central to caring for your
" l7 d. k1 ~6 uturbo.7 y- v: ^: C: u* H; Q' i5 r
In many instances Berrima Diesel receive turbochargers which have been
+ t. u3 {* _0 A+ u/ f' {misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
& M! D1 U6 r7 R4 d8 b- e C# AIncorrect fault finding is often caused by a lack of product knowledge. Many+ r; W/ H1 t8 T4 g9 \ F; v6 V
contributory items around the engine bay can trick the unsuspecting into believing the
8 i. `" z' w$ q- iturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
0 s& c* ]# l5 X7 q p; r! N. j& U1 {: tdiagnosed before a replacement turbocharger is fitted, the problem still exists!
* t3 [5 M |7 |6 z) K; rWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
; [2 f$ s. E I9 tturbo can be killed in many ways.
3 f3 W; Z9 a7 KForeign object damage results in either the air intake "compressor wheel" or exhaust8 {) M3 P0 {8 {$ T, @) X& B9 z6 i
"turbine" wheel being damaged. The former is often caused by someone accidentally4 j0 \7 y W0 i1 {
leaving a nut or other foreign body in the air induction hoses. Please be extremely
7 G* U9 ^* h. icareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
% Q2 R1 y. F+ G2 W% I6 A9 |this may be caused by part of an engine component, such as a piece of valve, exiting
2 E+ \) z& _3 G4 \8 d/ `! ethe engine in rather a hurry! In both cases it results in severe turbocharger damage
9 W& k( {5 h3 Q; G6 j; f3 Cinstantly.) i u/ F5 |& R( G! B
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
2 w$ a) l R) f4 h3 Oas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
2 G( C! [! u9 x- ]6 P1 tturbocharger many times, including final assembly. The balancing methods and, o; a* I0 t, [% E% `) \; N" {
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
* y' I% {+ k! _tolerances required for today’s high speed turbos. It is now common for8 A1 F4 P/ x! Z3 Z3 g% w3 P
turbochargers to spin up to 150,000 rpm +.
! n8 P) h( Q l: d0 i( EThat’s approximately 35 times faster than most diesel engines rev at the red line!1 X3 y8 V5 U& A5 c& a
Sophisticated machinery and highly trained factory staff ensure that the highest
Z& @5 i7 r) l+ D+ [standards are always maintained.
7 q- f# t O& W/ zUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are
% U' }! e0 X8 t zto always allow the engine to warm-up fully, until the water temperature gauge5 Z- X5 @$ }" p$ ]( J2 A# \1 @8 ~% _* B
reaches normal, before full throttle is used. Try to plan the end of your journey
5 @: S' F6 M6 K+ @' B. xsympathetically. Don’t use full throttle or allow the engine to labour during the last
8 R8 C; S' _5 {; yfew miles. This will prevent excessive heat build-up within the turbo when the engine
1 w" @# u8 K- N) k: vis turned off. Also, when coming to a standstill, try to leave the engine idling for a
( `* T) ? Q& c4 c- I( y5 Y$ pfew extra seconds to allow the heat to decrease. No need for a timer though, just undo" V; o* c/ H6 M1 G3 R! f- N
your seat belt first and then turn off the engine. Never rev the engine just as the
* o6 k. I' A% hignition is turned off. Remember the turbo spins at a far greater speed then the
" O, G0 U$ ?! nengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases, ]% U# G" [. {
within a few seconds. In reality, none of the above traits will cause a turbocharger to
3 H1 B. p7 i/ T) p" n. y* Lfail immediately, but repeatedly over a long period, they could reduce the life of your$ m4 y$ Q" q( {- ]. n ]
turbocharger.5 U e: @) _) e& k8 y& X
If it becomes necessary to seek advice about a turbocharger or a turbo related
6 w/ w4 p8 H% |! F/ R" T8 ~problem, always rely on a professional. Berrima Diesel, together with DTS8 z$ e: P% P# v2 m
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
6 l8 @+ `2 c* D3 _. y7 ~of the most experienced turbo installation companies in the world. We can advise
8 T( G3 o) @% u8 l( K3 G3 y0 acustomers with turbocharged 4WD’s on a wide variety of questions and issues7 l6 `$ n, m' ], h
relating to owning and running a turbo car.
2 c. F8 E; j3 s7 ~. GIt cannot be stressed too much how important it is, when purchasing turbocharger7 W' v7 e7 D+ b* ~* ^& Y2 r
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
" g f! G" r4 ?so many things in life, quality costs, and there are sometimes cheaper turbos for sale.2 j! }4 B7 ~0 n, t( F' c- n
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk/ H, o2 ~- w1 c9 d* K4 w+ |. o3 L6 B& @
that your short-term saving may turn out to be a long-term nightmare.; p. q6 v. B3 {) s& @
What is 'Boost'?4 Z7 D, V- p) E" B( o e
Boost is a term used to describe the increase in pressure, provided by the
# U8 N* H" N( p0 m/ I: [turbocharger, to the volume of air, entering the engine. This pressure is expressed in
/ S0 }" I e/ W/ F6 J9 ua number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
& z$ \$ i* S8 j4 U2 d$ E, z+ _ o4 nthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
Y3 S7 L4 d* a( H5 d* L5 p" m14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
5 p6 w, }* x' o2 `4 w {* ?output is increased. This pressure increase is called 'boost'.
1 {5 W% k3 E& K: Q! s8 sHow does fitting a Dynamic Turbosystem effect the power of my
9 f- a+ t" I, F9 r4 |7 Q* ~8 Evehicle?- l7 ^. J [" M
Modern 4WD diesel engines, typically produce peak torque (pulling power), at4 ~4 ]$ j3 R$ a% \# r! |6 p
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
. y$ ^7 _+ a, ?$ k# [: P; ITurbo boost starts at approximately 750 R.P.M. and rises progressively to its$ d& ?3 N9 L2 h$ d/ c: m! j% ~6 m
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
- j: G8 _7 O# k- H4 y1 spoint, the percentage torque increase of a correctly tuned installation is approx. 40%,4 P* ]8 ? C# n
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At. _ x. c1 n- C
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater4 x) @6 x6 ?: S7 y# y% ]
than the standard vehicle at the same R.P.M.
1 C' \7 L: K5 @1 |* A' I: s+ ~Can I fit a Dynamic Turbosystem myself and, if not, how long and
) S( i, K0 X% ], g* uwhat is the cost of having it fitted for me ?
4 ~4 O$ i3 U N N: XWhile most competent mechanics could probably fit a Dynamic Turbosystem,
7 A5 t. x/ a+ x3 Y7 stuning requires specialised knowledge. The lack of this knowledge could have" [5 O; ^+ o, c! Z$ M9 i
serious consequences. In addition, warranty can only be provided on Dynamic8 ^/ \1 E+ c# d, }
Turbosystems which are installed by authorised facilities.- j J, I: v5 U8 c; ^8 Y
The cost of having the installation performed by Andrew at Berrima Diesel is
, d; [/ y+ z1 vonly about 10% of the total purchase price. This provides a warranted, correctly& k) j' y d6 h) k& }2 M
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
; }: _# ~* E9 }- Vperformed in one day.9 K1 E2 b9 i2 {$ }4 g @* R+ h
What creates the most heat? Fuel or turbo boost?
4 H. I, \* m. q& CDiesels do not need an air control (eg. manifold butterfly valve. The only ones
7 v& D% w. U/ r: ~requiring a butterfly are vacuum operated governor pumps) to operate. The more air$ |9 I3 `: I! ~6 t3 y% S1 n
the better. Add too much fuel to the equation and the exhaust gas temperature+ ? |$ k7 x0 q
rises rapidly.
6 ?: X0 }8 ~* xWhat type of oil and how often should it be changed ?
1 M; F, d0 Q9 [( @- N' H3 G$ F. k. M- [Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic* C, R" q6 ?( D
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
" A# X: C9 a( q4 n& vChange oil at intervals recommended by the vehicle manufacturer.
2 c" X* P9 t) W/ ~/ ~' yHow long does a turbo last ?
# T7 U# ?& m+ SOn average, as long as the engine or longer with regular engine servicing and good+ x0 o+ f& A7 N" ?7 q }% X
quality engine oil.
4 f1 q, `+ O; d' S# SWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
6 \0 ~+ V7 S2 O2 k S$ zA valve which relieves boost-pressure between the compressor outlet and engine as \, Z" \5 [* k5 [9 e6 M" G
the throttle is closed (Only required on throttle valve controlled diesels which are1 ?4 `1 C5 D; t$ q- X6 |; R
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
3 E4 X9 F6 W* g& Qsounds good changing gears among other reasons!
3 }& s9 i( `5 \, m cCan I fit a turbo from another 4WD ?$ o* t* N- J" {) g& K4 T/ R
No, virtually all turbocharger are different inside, even if they appear similar on the8 O0 M! n( M" Z* v4 j! z
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the! K- Q- K+ v& X
specification.% X. x. ^6 H8 L) @
Should I leave my engine ‘ticking over’ before it is turned off ?+ F0 |) D9 f' A, C: R @7 H
Not for normal every day driving, but still worthwhile if the engine has been under
3 V) g/ u8 z8 U( w/ p m2 ^+ q7 Uload or raced before being turned off. e.g. Towing a caravan or after climbing a long. X6 x0 w# J5 `
incline.
' s c7 n! b) A! c1 g- jWhy is it important to balance a turbocharger ?
$ B; V H- y j8 d- SWithout highly accurate balancing, vibration will create a whining noise, reduce
2 `, T9 U# @0 b* sturbo bearing life and reduce turbo efficiency.
3 n* H; n4 [7 {- f- l' lHow much boost does my turbo produce?
/ H' f7 @/ ?0 k: bCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
5 G* A. U5 V% |( FIntercooler turbocharged engines running upwards of 13PSI.
, I' h) D: ^, eHow many psi in one bar ?8 r2 _% A% A3 F8 ^$ d8 p3 S8 e
14.7 psi = 1 bar.4 y0 R# r0 I( u8 I
Are all actuators the same ?' H; B2 v3 f2 l$ ^# f
No, each has a different opening pressure and rate.. V, t1 n% z. s- `
Oil in the turbo inlet pipe - Should I be concerned ?
$ l+ l, I( J. e% {A small amount of oil usually exists, drawn in from the engine's crankcase breather# h7 u X+ l# A' t6 g
system. High engine wear will increase the amount of oil found, and will require
/ c. m* m* `( _: r1 x; dfurther engine tests (not turbo).
/ C h3 t# x8 k# E5 z3 T& u- z, }- A2 C1 VShould a turbo be serviced ?0 D/ B4 G _1 S) Y; a- k0 I$ O3 j
No specific turbo servicing is required, but regular quality engine servicing is needed
; l" a+ }( [2 w: u4 V: H" _! s3 Pto reduce the chance of turbocharger problems.
; ~9 \2 ]6 }. b2 b" c) k2 }) x; OWhat is a water-cooled turbo ?
& y, |7 k: |1 b) r" a$ N+ oThe central part of the turbo, housing the bearings, is surrounded by a water jacket
. B# r5 a/ l8 b1 y* P( Rthrough which the engine's water coolant is passed. This water continues to circulate" p, f" k% e" L- w* f
after the engine is turned off, cooling the turbo, and preventing heat soak.7 \4 C* o% L& X, {' S* F. U
Do I need to up grade my exhaust ?9 c% K5 k6 s2 \* R) e
Generally not. Our systems are designed to run utilising as much genuine component @5 C- D1 N; T2 z w0 i& C. h
as possible. Some systems on the market promote exhaust change as it is required by
( T. x2 z0 j. M: P& U4 D* lthat particular turbo. Doing so usually picks up more noise than performance.
, S7 Q& S1 u1 L- } N: YHow noisy should a turbo be ?
- ^+ x+ j7 N/ O2 A5 [8 _: AOnly an unbalanced, worn out or damaged turbo will produce any significant turbo7 R- b9 Q0 A& n' e2 A+ G; F; q
noise.) h) m( Y7 d- ]! z1 X
What is an intercooler ?8 ?# M. F5 t8 I/ P( A; {
A special type of radiator which cools air before it enters the engine. As a turbo5 Q3 b* f! R+ z* {8 `* ~' K
compresses air, the air heats up. Power can be increased if the air entering the engine
0 H& y' r& m! C6 {6 n9 G/ Fis cooler. The cooler air is more dense meaning that more fuel can be injected for+ m5 r0 v C: X4 U# h, {
more power.
! ?/ W) L) T6 M" JWill my vehicle run ‘cooler’ with an intercooler ?: w5 F* X @" d. e
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles; p3 g( D+ P+ N+ L6 C
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
1 K5 l, ]& {& K, C/ Mair passes out of the Intercooler over the air conditioning condenser and finally the8 [4 X1 `( y0 Q7 l5 j( L/ w4 @5 d) B+ ~" c
radiator. The poor old radiator is left with scraps of extremely hot air and then is9 ]% d- U+ Q8 M5 ^# I
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
/ ^; i% ~: D' k! Y$ ?: gcan often be the catalyst for engine heat problems." m7 h+ o0 |) R# M+ o9 G/ M
What will happen to my fuel consumption?+ U, q* f) F2 E$ C* q7 C4 o
More power generally means more fuel. With a diesel turbo system, fuel consumption
# _+ u3 p; N% n& b3 ~; ustays 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
