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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! N+ b+ i' z! b1 w' Q
‘Frequently Asked’
3 ?+ P$ o, D2 Y" \0 f3 o‘Turbo Questions’(In no particular order)' K, ?* k Z8 Y
Your turbocharger is engineered to match the specific requirements of the engine it is, a2 c, w T8 }0 d7 F* j1 ~+ n
fitted to. Each is dependent on the other to maintain optimum performance. Don't0 J" \+ C0 z0 b! }) g
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
1 S5 d. w* M$ Lturbo's requirements are similar to the engine’s. It is, therefore, essential that# c* c" D% f4 r! Y3 L. G: u+ d
scheduled servicing, using good quality oils and parts, is central to caring for your4 @ ~- L" W2 F
turbo.' Y0 w3 c I' H7 ]% S% W
In many instances Berrima Diesel receive turbochargers which have been
! K! T+ m- d" a. \: Omisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
( S5 _6 G: N3 c* Q- V1 kIncorrect fault finding is often caused by a lack of product knowledge. Many
; e/ x5 \, G7 v( V* L2 H$ n: pcontributory items around the engine bay can trick the unsuspecting into believing the9 u) T! c# ~% [) j0 N& E
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
0 {2 }3 m2 X- o* w7 Bdiagnosed before a replacement turbocharger is fitted, the problem still exists!4 C8 ]- N# F! K4 V: L+ y @/ V
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
% o" d8 u. x. p3 _turbo can be killed in many ways.
' J" v! c, V, O- f6 X* |- n& o. ?Foreign object damage results in either the air intake "compressor wheel" or exhaust
' v. A6 p) J" c6 a! N" U"turbine" wheel being damaged. The former is often caused by someone accidentally
( `9 L. Q) f+ R* f: m$ jleaving a nut or other foreign body in the air induction hoses. Please be extremely! F/ ~6 _" @- [# N4 V( Q
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case, V8 D5 ^" `2 ]
this may be caused by part of an engine component, such as a piece of valve, exiting
p) l" ^. @ G; Z- S8 vthe engine in rather a hurry! In both cases it results in severe turbocharger damage7 W; K- k$ g$ w9 D
instantly.# W2 e; A6 l; u B3 X/ n# h
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
2 T0 q6 ^3 t; ~. c- `) e+ Uas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single. Y6 R. F& Q7 P! y$ x7 U& x3 t
turbocharger many times, including final assembly. The balancing methods and" X* Q4 a& `/ w2 A
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
: |& v+ M0 R0 |, k2 l( }. Dtolerances required for today’s high speed turbos. It is now common for4 o3 k- _* M ?" z* t$ Z
turbochargers to spin up to 150,000 rpm +.
) `0 M0 ` ^% P6 XThat’s approximately 35 times faster than most diesel engines rev at the red line!+ z9 ?' G- R% a2 G. y
Sophisticated machinery and highly trained factory staff ensure that the highest, c. ]) R {1 ]& v! l
standards are always maintained.
5 T; {: d% D/ m0 {- n7 `* }; W! FUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are
+ R; O2 B4 l- [5 Wto always allow the engine to warm-up fully, until the water temperature gauge
) i: E9 Q4 X' r3 C6 L& mreaches normal, before full throttle is used. Try to plan the end of your journey
5 z5 o" D1 t* Msympathetically. Don’t use full throttle or allow the engine to labour during the last
$ \( W+ _+ ~' }few miles. This will prevent excessive heat build-up within the turbo when the engine
( T- i. T/ X! Z Tis turned off. Also, when coming to a standstill, try to leave the engine idling for a
/ @6 F, q$ J6 g) L! O- @' {2 U" Mfew extra seconds to allow the heat to decrease. No need for a timer though, just undo* [. L! C$ g, b0 }; n' H' x
your seat belt first and then turn off the engine. Never rev the engine just as the
4 k% Y" A$ e7 y: Q$ o' Aignition is turned off. Remember the turbo spins at a far greater speed then the
6 y. m9 D. T# [- ]& Q+ S# I \engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases6 u2 g+ D/ C. W2 M3 m$ g: a. w) r
within a few seconds. In reality, none of the above traits will cause a turbocharger to) y# s P) {+ O# N; T5 \
fail immediately, but repeatedly over a long period, they could reduce the life of your: T7 e5 X( x9 Z8 y
turbocharger.
$ \( T- z* i6 F# _If it becomes necessary to seek advice about a turbocharger or a turbo related# f9 G) l5 N0 S
problem, always rely on a professional. Berrima Diesel, together with DTS
1 g3 h. X0 k- ?turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one% ^/ |! Z: F6 y; ~7 }, O
of the most experienced turbo installation companies in the world. We can advise
( |( |( N" G$ E, N h) Ycustomers with turbocharged 4WD’s on a wide variety of questions and issues
8 i* M5 K$ T& i+ B0 r7 Yrelating to owning and running a turbo car.
9 V* K4 U+ X4 A6 h6 o4 Z, |It cannot be stressed too much how important it is, when purchasing turbocharger0 N9 z5 {# |- `6 V: k
system, always to choose the top brand name -Berrima Diesel. Consider this. As with% B: Y4 e4 ?% J$ m% N A2 O
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.2 l) w8 S9 _' p: f6 _8 X
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
* z/ f/ W7 {7 ^6 uthat your short-term saving may turn out to be a long-term nightmare.4 L0 y# m# ~8 z- R
What is 'Boost'?
! P8 J" r! ^0 V% e! ZBoost is a term used to describe the increase in pressure, provided by the
% m" {3 Q4 p) r' R; nturbocharger, to the volume of air, entering the engine. This pressure is expressed in; c: J {2 S( [
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same9 r4 L' {. }" i0 b" w
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa" y! u- {+ g2 O/ q; c1 l5 ?
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
9 @6 q- O3 G) [" zoutput is increased. This pressure increase is called 'boost'.. v7 w4 y& F. D
How does fitting a Dynamic Turbosystem effect the power of my" p+ k% z" ]+ C- E; C# q3 l
vehicle?% J& ]" {2 I; K. [+ G/ i6 X d8 H) n
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
% R- n7 n) Y+ V1 O7 O7 C+ ~around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
! c' {; B8 g7 Y% Q4 Y/ w/ _' YTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
8 M s7 l1 g- S c/ U5 hmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this2 ?0 c; v/ U4 B/ K! t' o% `. ^
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
8 b& C$ Y. t$ ~4 N. w Qat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
4 \! w2 p1 e' s( l% H! s5 V# Jno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater# N3 j8 S s& B* P4 E
than the standard vehicle at the same R.P.M.
: W( X; [# {, I5 q5 k) T0 K+ MCan I fit a Dynamic Turbosystem myself and, if not, how long and
, ]& [3 S: _+ N; a( Hwhat is the cost of having it fitted for me ?! F2 v3 }: h# Y; Q8 N7 {3 h
While most competent mechanics could probably fit a Dynamic Turbosystem,
* w- k; ^' y1 D! c2 q& Stuning requires specialised knowledge. The lack of this knowledge could have7 @4 h$ I' x( _8 J+ e* u
serious consequences. In addition, warranty can only be provided on Dynamic
0 i) G9 d# x) q8 {Turbosystems which are installed by authorised facilities.
% K* n5 J: ^$ d3 X# W6 w' cThe cost of having the installation performed by Andrew at Berrima Diesel is
8 c% y B p: honly about 10% of the total purchase price. This provides a warranted, correctly; S2 M0 }, I% w" }" a5 e
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be, d8 e& \/ E& o6 a* O
performed in one day.
8 s, J; k6 O7 q0 `% u. g! aWhat creates the most heat? Fuel or turbo boost?4 m" T) P; R6 ~; m
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
$ ?4 |# R- L$ V$ Lrequiring a butterfly are vacuum operated governor pumps) to operate. The more air$ I" D. V: v/ N# G% v# {" v2 M2 P
the better. Add too much fuel to the equation and the exhaust gas temperature. g) j7 F9 d6 q4 c3 r+ R
rises rapidly.. X, f) l# u8 g
What type of oil and how often should it be changed ?
4 S6 [! R- }$ e/ Y: pTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic2 |& O& p; z' Y4 B: }
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
! Q6 N9 n$ D. K E, H( CChange oil at intervals recommended by the vehicle manufacturer.& j) M9 V+ @1 h1 a' \, {# x/ c
How long does a turbo last ?0 X5 {$ }1 n$ V- r" _
On average, as long as the engine or longer with regular engine servicing and good! m+ e; Y% z: G6 h2 w. W
quality engine oil.
4 V" t3 S+ o% \8 r1 |; I7 U7 s" dWhat is a ‘dump’ valve or ‘blow-off‘ valve ?4 O) Z1 F* W3 q6 @
A valve which relieves boost-pressure between the compressor outlet and engine as3 a8 x3 ? J7 u- H
the throttle is closed (Only required on throttle valve controlled diesels which are
: r& O, Q: @/ S& `& D0 k5 B7 A, t6 {; }rarely seen these days). These are commonly fitted to hotted up petrol cars so it- F2 ~; }; E9 |: R
sounds good changing gears among other reasons!
; h% w9 M5 @$ G) M, G/ a1 A+ z: nCan I fit a turbo from another 4WD ?
0 ~) R- ]& m" v: y0 r8 yNo, virtually all turbocharger are different inside, even if they appear similar on the* A; z# S4 @5 h" b
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
1 r" N2 ^& B* `, S1 \. b. rspecification.# F6 i" V2 |. ~& G: }
Should I leave my engine ‘ticking over’ before it is turned off ?4 v6 m$ R3 g2 a9 K& U
Not for normal every day driving, but still worthwhile if the engine has been under
7 `1 B9 W9 D, |6 ~+ Qload or raced before being turned off. e.g. Towing a caravan or after climbing a long
/ ]% Q w5 w+ ?' c# o" ?incline.
: }; ]9 V8 D/ Y7 ]. eWhy is it important to balance a turbocharger ?/ U0 T8 q$ |( W4 ~0 o* V
Without highly accurate balancing, vibration will create a whining noise, reduce& I0 {5 v/ E% A
turbo bearing life and reduce turbo efficiency.
6 Z- g) v) L: o/ CHow much boost does my turbo produce?( l9 U+ m: |) t! I$ H/ q" v X C+ i
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
, D1 `2 Y4 p/ wIntercooler turbocharged engines running upwards of 13PSI.
0 C' T6 ?, W, n- M3 y: CHow many psi in one bar ?
) j0 ~7 c7 p; I5 @ `% X# P; Z# w14.7 psi = 1 bar.
, F( i3 @6 e( I; CAre all actuators the same ?
# l, s1 z) |; R; Z. S, gNo, each has a different opening pressure and rate.
. F t0 L8 k [8 c: \/ `" i5 COil in the turbo inlet pipe - Should I be concerned ?
6 d" x8 m7 Y6 H% a% X1 [$ wA small amount of oil usually exists, drawn in from the engine's crankcase breather
# o$ Q9 u! f- I+ I& Q' P% zsystem. High engine wear will increase the amount of oil found, and will require( X- d) E0 f+ `* v H0 d
further engine tests (not turbo).
2 F, u2 g8 k3 H5 L: _( H# g1 V: SShould a turbo be serviced ?# U) l5 b h% w' J
No specific turbo servicing is required, but regular quality engine servicing is needed
, u k7 r7 D# O7 K' I! f5 fto reduce the chance of turbocharger problems.
# z+ y' b0 R0 Y8 m; {What is a water-cooled turbo ?: K( p* y; u' V8 A6 `: I
The central part of the turbo, housing the bearings, is surrounded by a water jacket
6 g! N \+ i, l7 r/ `6 B! Othrough which the engine's water coolant is passed. This water continues to circulate
* S: S4 x+ H2 D) z& t9 kafter the engine is turned off, cooling the turbo, and preventing heat soak.
3 u5 ]4 b5 Y5 o$ LDo I need to up grade my exhaust ?
9 Q9 P9 a- m# t. T$ I+ r5 H2 ?/ vGenerally not. Our systems are designed to run utilising as much genuine component, p7 ]; z5 u1 ~) d8 H% j
as possible. Some systems on the market promote exhaust change as it is required by
! G4 U& a! F: O2 D' c) l ythat particular turbo. Doing so usually picks up more noise than performance.' E" k- Z3 @, p! x/ s/ J
How noisy should a turbo be ?, O4 `5 O9 A$ a! A8 a
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
$ @5 S, M/ u6 p3 Inoise.
6 a8 @3 P: x: @, U: Q9 P+ t) {1 cWhat is an intercooler ?
; U! g/ g9 c; ? K/ zA special type of radiator which cools air before it enters the engine. As a turbo- I9 W5 {: v: b. J# {; L8 R
compresses air, the air heats up. Power can be increased if the air entering the engine
* m2 g; A9 R: v4 q. Bis cooler. The cooler air is more dense meaning that more fuel can be injected for k2 W, z) u3 ^+ C( C: U7 Q5 z
more power.
# G+ D) u; u* M# A8 x* xWill my vehicle run ‘cooler’ with an intercooler ?
! e) w* V- J7 z. \, c1 c' M8 \Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles& e, D1 ^) X4 a4 o+ a. G
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
9 `3 a# X' U; i* T5 L, ^air passes out of the Intercooler over the air conditioning condenser and finally the
7 e. y* C' ~9 C5 \* Hradiator. The poor old radiator is left with scraps of extremely hot air and then is* a) g6 S" D2 ]" i- h8 C4 U
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
: Z% z4 R. C3 s, b. }3 _can often be the catalyst for engine heat problems.1 W' Q$ O. D# X: [
What will happen to my fuel consumption?0 ~+ ~1 f5 }- x& h" O6 V" A) a
More power generally means more fuel. With a diesel turbo system, fuel consumption! p0 F: p( F( g6 I0 ]
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
