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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. 0 o3 |( i4 i, Q( B i& G2 ^. ?) j: S
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Tech Sheet! s& Q* N- x( A7 m' \' t
‘Frequently Asked’
6 x2 B& @ v( H. n7 K) ^% a‘Turbo Questions’(In no particular order)1 {1 t9 a) W& j2 H9 A: |
Your turbocharger is engineered to match the specific requirements of the engine it is
' S* Q- o1 s5 C6 wfitted to. Each is dependent on the other to maintain optimum performance. Don't' Y' W( @ i* D& P& r) Q% V
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
4 l, P% w7 P1 g: oturbo's requirements are similar to the engine’s. It is, therefore, essential that; T) q! u0 S3 V6 c6 x9 s; b. x
scheduled servicing, using good quality oils and parts, is central to caring for your m% @+ w0 d) V9 q; D m0 J" p
turbo.; ?% N9 ]1 g3 i7 L2 H0 ?
In many instances Berrima Diesel receive turbochargers which have been
, Q& U& t8 M0 F( ^2 M" pmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.. f2 v5 `) x" U* G' X( [' u- K+ M
Incorrect fault finding is often caused by a lack of product knowledge. Many- H" d( f; O- ^ ~! i
contributory items around the engine bay can trick the unsuspecting into believing the! H) u% n: u2 D
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
/ S5 I! n# A, @3 Wdiagnosed before a replacement turbocharger is fitted, the problem still exists!' p) v* Q+ @/ p% ^
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A4 o/ p% c8 U/ D( x& `+ ]: |0 `
turbo can be killed in many ways.
7 V4 ^( l/ x0 r8 | S* sForeign object damage results in either the air intake "compressor wheel" or exhaust; T$ _ Y1 ?+ R9 P" r P
"turbine" wheel being damaged. The former is often caused by someone accidentally
1 A$ u' X7 y8 ^; a2 ileaving a nut or other foreign body in the air induction hoses. Please be extremely
% R- J; [' {8 w) e$ w/ v- j) Lcareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
8 y! n# @! O( S3 ~3 J' H! p8 }this may be caused by part of an engine component, such as a piece of valve, exiting
^1 e9 _( \! u* ]" Nthe engine in rather a hurry! In both cases it results in severe turbocharger damage
& u( [3 I: h& ^7 J5 l+ X( S3 Dinstantly.
& u- ^/ G. R, \& i" HTurbochargers are simple in operation, but manufactured to precise tolerances as fine
+ u% Q+ Y; D! V6 m( Sas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
5 G2 [& T! m8 Y6 e/ A! ]turbocharger many times, including final assembly. The balancing methods and
5 d( ]. n+ R8 y3 } ^$ {8 |) nprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine% u* [ h0 L9 D, { w
tolerances required for today’s high speed turbos. It is now common for
+ Z1 [7 h) A3 Eturbochargers to spin up to 150,000 rpm +.+ } b& t7 Z Q; u9 X5 j; [
That’s approximately 35 times faster than most diesel engines rev at the red line!4 j: v- L% X5 t: i! Y. P
Sophisticated machinery and highly trained factory staff ensure that the highest6 x# h2 b* L% ~: v; m0 c$ |# ^
standards are always maintained.$ k, n- ~9 r# A1 W
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are8 g4 u; [$ j4 o
to always allow the engine to warm-up fully, until the water temperature gauge
+ }) V6 B( S! m( h) z' I$ rreaches normal, before full throttle is used. Try to plan the end of your journey( Z, G* q! o, c2 W2 p. Y
sympathetically. Don’t use full throttle or allow the engine to labour during the last
6 i: g: M& u9 o$ y: {7 `few miles. This will prevent excessive heat build-up within the turbo when the engine" H2 a# H' L5 \' ]" B
is turned off. Also, when coming to a standstill, try to leave the engine idling for a8 M2 E* l- J$ o5 V
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
" V, m7 G! m# |# n: k$ N/ B) Ayour seat belt first and then turn off the engine. Never rev the engine just as the
2 n/ w( t$ T4 cignition is turned off. Remember the turbo spins at a far greater speed then the- g- C' f7 _" l8 G
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases0 [5 e+ W* T. U r8 |& U2 F. H
within a few seconds. In reality, none of the above traits will cause a turbocharger to& n$ S) o: Q* B( R* y
fail immediately, but repeatedly over a long period, they could reduce the life of your: c5 ?/ y9 \$ X
turbocharger.& S8 i9 r, a$ Z" u P/ O" h0 A- p
If it becomes necessary to seek advice about a turbocharger or a turbo related
0 l, J: h3 V8 W. k9 ^% O1 _& lproblem, always rely on a professional. Berrima Diesel, together with DTS, l H$ o4 m0 v/ ~
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
0 ~6 G6 O% |8 A+ V# ^8 ?) n4 Gof the most experienced turbo installation companies in the world. We can advise
1 O" I' ?# F% f; K8 b& L& Qcustomers with turbocharged 4WD’s on a wide variety of questions and issues
! c) L+ L! [* S9 E/ crelating to owning and running a turbo car.* q6 Y+ ~' I( w6 L {# W/ c& Z) i
It cannot be stressed too much how important it is, when purchasing turbocharger
3 v% D( q( y( Z* Ksystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
% W8 W. G2 j( @" g$ u2 rso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
$ x3 B0 V9 b [Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk7 h0 v) W; I" w* m9 T4 J* A
that your short-term saving may turn out to be a long-term nightmare.) T( \, u! P7 p' ~8 T
What is 'Boost'?1 ^( R+ A g# C a8 | |/ t
Boost is a term used to describe the increase in pressure, provided by the
2 Y2 M: S. H, }/ s$ C4 y: I6 Dturbocharger, to the volume of air, entering the engine. This pressure is expressed in
% o" M, H1 x4 ]6 b5 Q& D u$ ?" O7 f& Ha number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same7 a6 J& N4 c8 d- ?. E. y; X: L" D1 ?
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
- Z9 [4 W6 C- q' [14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power4 [8 i! e, |1 i1 Q
output is increased. This pressure increase is called 'boost'.
_& n( c/ U* b- k/ X: a. @How does fitting a Dynamic Turbosystem effect the power of my! m6 Y( q0 o' {7 X9 E9 y
vehicle?% l( l+ f) `" M+ u
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
0 G; H+ ]/ i0 b+ Naround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
- P- s% ?3 y) y( S' bTurbo boost starts at approximately 750 R.P.M. and rises progressively to its4 J% u7 \9 b( ~5 [
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this" j4 d, B- H+ g% ]- ?
point, the percentage torque increase of a correctly tuned installation is approx. 40%,. ~1 a# {2 D3 [
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At! x" ~: L& K1 g& Z' ~
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater- P5 X, ~/ |% t' G7 W
than the standard vehicle at the same R.P.M.0 C3 L" J7 `( `
Can I fit a Dynamic Turbosystem myself and, if not, how long and
; R6 P$ ^. F3 w: u& ~what is the cost of having it fitted for me ?
+ N; { i2 G2 ^* |' o7 fWhile most competent mechanics could probably fit a Dynamic Turbosystem,! b% J6 u5 a) ^; P) t- f4 m+ g! m
tuning requires specialised knowledge. The lack of this knowledge could have+ s) H) |2 l; t* c& L1 a* f. o- U5 c
serious consequences. In addition, warranty can only be provided on Dynamic# G; r" d+ T# S, C9 ~: V
Turbosystems which are installed by authorised facilities.
* I* F7 H* F) |; f1 i7 R/ lThe cost of having the installation performed by Andrew at Berrima Diesel is0 h/ T: C. U$ A4 B i/ x* I
only about 10% of the total purchase price. This provides a warranted, correctly
3 {1 E: L, X9 o" J8 ]/ Ptuned, "no hassle" installation for the customer. All diesel vehicle installation can be0 L& s- D0 r) n) b/ H3 n8 `
performed in one day.
* d- R& T X N. VWhat creates the most heat? Fuel or turbo boost? y# [ z# d( ~* u; d9 O* z5 X
Diesels do not need an air control (eg. manifold butterfly valve. The only ones' E% j% n# _" J
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
0 D' `: {; X" s, ^! zthe better. Add too much fuel to the equation and the exhaust gas temperature$ U( a1 D Z( N
rises rapidly.
[* {4 X( r" I" v" zWhat type of oil and how often should it be changed ?5 e( o& ]! v$ D. V6 S7 d
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic$ q3 G4 m7 k( C* G3 B
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
( D" Y8 F8 o) l& y; PChange oil at intervals recommended by the vehicle manufacturer./ C: x# `* R& z8 {' B
How long does a turbo last ?$ E9 X' t; y7 Z8 S4 `
On average, as long as the engine or longer with regular engine servicing and good$ Y/ }! b# V. |+ n% B
quality engine oil.6 r1 E3 q A4 L+ q$ }" S
What is a ‘dump’ valve or ‘blow-off‘ valve ?
, V% d, a. l/ C& P* f/ oA valve which relieves boost-pressure between the compressor outlet and engine as# S9 R: p' P; d
the throttle is closed (Only required on throttle valve controlled diesels which are) ]* M* O6 @, j( ~7 @
rarely seen these days). These are commonly fitted to hotted up petrol cars so it$ f$ V$ `( f7 f4 n q5 V1 y9 m
sounds good changing gears among other reasons!
/ w$ ^1 l B( B# F! ACan I fit a turbo from another 4WD ?8 g" o3 }7 N1 {( h; z! ]/ F
No, virtually all turbocharger are different inside, even if they appear similar on the
, t; E( Y/ R X2 e: y: E! Noutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the9 y' f, U% X: D1 B5 G
specification.
, g' H" E* a. V8 k$ O4 XShould I leave my engine ‘ticking over’ before it is turned off ?; J% w/ m: B: t4 b2 M
Not for normal every day driving, but still worthwhile if the engine has been under
: t& B/ N- q+ J" T9 k* p0 Gload or raced before being turned off. e.g. Towing a caravan or after climbing a long
/ u: o! f2 A+ ]0 wincline.
+ H8 d' @3 f' C: P3 OWhy is it important to balance a turbocharger ?6 b- @# e! k; R) G g! J" a
Without highly accurate balancing, vibration will create a whining noise, reduce. k+ \, W" k, T+ G
turbo bearing life and reduce turbo efficiency.
) h. H' z+ \2 ?' [5 E/ jHow much boost does my turbo produce?7 ?7 C, S5 x z) O% G1 l
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
* l0 x( s5 \3 ZIntercooler turbocharged engines running upwards of 13PSI.
) j8 a V2 P: O6 {* T, m- [7 _0 ~6 RHow many psi in one bar ?) N( N; q; ^1 {4 V
14.7 psi = 1 bar.
5 O! Y! T) S& oAre all actuators the same ?
- E( o& ?- m: ENo, each has a different opening pressure and rate.$ V- _! O! ?+ ^7 ^8 v: u' Z% l
Oil in the turbo inlet pipe - Should I be concerned ?% |, I9 K j: ]. y
A small amount of oil usually exists, drawn in from the engine's crankcase breather# c- s! S) \) |+ W
system. High engine wear will increase the amount of oil found, and will require! ?) y: ?4 F6 s
further engine tests (not turbo).
. Q. r* |; N% E- VShould a turbo be serviced ?8 A1 K! z4 `" X) V$ u$ f' T7 Y
No specific turbo servicing is required, but regular quality engine servicing is needed6 _0 V9 ]9 L4 @- L# G4 R4 Y
to reduce the chance of turbocharger problems.# c9 \5 x' p: ~$ d* w
What is a water-cooled turbo ?( U: n6 X/ j8 Q2 E, A# m# _
The central part of the turbo, housing the bearings, is surrounded by a water jacket1 h9 M* _' ~* O% \3 L
through which the engine's water coolant is passed. This water continues to circulate0 z$ Z4 Z0 L- U3 g3 i) T$ S
after the engine is turned off, cooling the turbo, and preventing heat soak.9 R( [ n' U0 C2 r3 I5 ?
Do I need to up grade my exhaust ?9 M k9 b0 R: Z6 V6 Z+ }7 [
Generally not. Our systems are designed to run utilising as much genuine component
8 A' e- Q1 ]4 q$ t. Las possible. Some systems on the market promote exhaust change as it is required by
: i- `; T: C3 {+ z7 g+ s. Y7 v7 t4 Y( }that particular turbo. Doing so usually picks up more noise than performance.9 @- j8 S! U+ ~2 m& s
How noisy should a turbo be ?$ j; m) O1 y' r' j" k
Only an unbalanced, worn out or damaged turbo will produce any significant turbo: v2 w: T. k8 l
noise.
$ M F g5 N, S, bWhat is an intercooler ?
4 H! C3 L9 T2 x" W: w2 i, qA special type of radiator which cools air before it enters the engine. As a turbo) a, w7 |# T4 Q: d4 `. e( ~
compresses air, the air heats up. Power can be increased if the air entering the engine, p: R* A' o% Q2 _
is cooler. The cooler air is more dense meaning that more fuel can be injected for
v! @' J. `0 o, h4 h1 F- S' Q( V; tmore power.4 |1 O& E, q" l3 l* s% v$ H
Will my vehicle run ‘cooler’ with an intercooler ?
7 n' f% F. z8 Q5 b- l4 t* k. a$ tTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles9 b, J- n9 P" T5 f2 h
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
5 Q, ]3 E6 a6 Z& ]7 e& mair passes out of the Intercooler over the air conditioning condenser and finally the) d8 k: [+ S, A: n! [3 y) w4 M" Q
radiator. The poor old radiator is left with scraps of extremely hot air and then is
( [) Y$ K( U8 F' p7 Q* F0 }: m* l# kexpected to cool the engine. We don’t advise fitting them as hot Australian conditions
" d- h4 k- A5 K* o! ecan often be the catalyst for engine heat problems.! d6 b8 d9 }$ k8 f
What will happen to my fuel consumption?
+ x1 W5 }, c" B. {" y5 k( fMore power generally means more fuel. With a diesel turbo system, fuel consumption
r" c4 j- J$ ]$ L/ p$ K3 s# hstays 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
