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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- m9 X; k6 j6 }3 m2 v
‘Frequently Asked’1 X. d Z c4 a- b z$ f! r
‘Turbo Questions’(In no particular order)
, d( `6 ], o+ S$ {. v' R& MYour turbocharger is engineered to match the specific requirements of the engine it is
6 ?( R2 Z( c7 E( U9 Ifitted to. Each is dependent on the other to maintain optimum performance. Don't2 w9 B: ]. c# q; X b
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The7 w: }# f7 I! E
turbo's requirements are similar to the engine’s. It is, therefore, essential that6 I9 I) Y* F. K* {2 }) ~& R- H
scheduled servicing, using good quality oils and parts, is central to caring for your
. p. T1 @1 U* b. L3 d Cturbo./ Y( K+ K$ T/ G/ H5 W0 E
In many instances Berrima Diesel receive turbochargers which have been7 F7 \* Z1 M6 {# S
misdiagnosed as having a turbo problem, when actually the turbo is not at fault. \3 @: N5 w3 I3 S
Incorrect fault finding is often caused by a lack of product knowledge. Many
3 m" M9 q$ u( h& p8 [+ E4 Q! j3 Qcontributory items around the engine bay can trick the unsuspecting into believing the
; s+ k$ [) u0 Q5 O1 n: hturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not' V( ?# `2 [# O$ h6 K
diagnosed before a replacement turbocharger is fitted, the problem still exists!
9 t$ H7 K# X0 ^- Z jWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
. H* E6 D: q% u" |; h0 ^turbo can be killed in many ways.4 n7 b1 u Y+ i1 _5 y
Foreign object damage results in either the air intake "compressor wheel" or exhaust
6 b1 Z4 ^% |: {# |"turbine" wheel being damaged. The former is often caused by someone accidentally
3 K* |2 b: q9 b2 U/ }leaving a nut or other foreign body in the air induction hoses. Please be extremely0 C. y! }! }) I( d
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
+ {4 D3 H5 |! e! S* Q! ithis may be caused by part of an engine component, such as a piece of valve, exiting/ l+ d+ e6 {8 ]
the engine in rather a hurry! In both cases it results in severe turbocharger damage( b. G9 m& E5 x/ `5 V% h- f" R( Q1 r
instantly.
# b& @: Z+ j* E7 v! gTurbochargers are simple in operation, but manufactured to precise tolerances as fine3 Q( I' X6 i2 m- U& i8 W
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single. m3 I! _, k$ M/ z; ?
turbocharger many times, including final assembly. The balancing methods and: @5 u* l( R: e) r1 Z* Q3 y
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
( j% A/ f& m3 D, k* ^; E" o6 |tolerances required for today’s high speed turbos. It is now common for3 ~' D x0 S" w2 h7 t
turbochargers to spin up to 150,000 rpm +.4 i1 b5 H# v4 {, [! z
That’s approximately 35 times faster than most diesel engines rev at the red line!6 X' E2 U; C$ \
Sophisticated machinery and highly trained factory staff ensure that the highest7 [+ e3 x0 x9 M* K, n) P. @
standards are always maintained.
! j! a+ o* i$ ] }5 l6 B% uUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are
8 K3 I0 X# y: T: Hto always allow the engine to warm-up fully, until the water temperature gauge
% K7 x# ?% [# q% C& Mreaches normal, before full throttle is used. Try to plan the end of your journey
2 Q+ Q0 N) x. c4 T1 a6 r' Nsympathetically. Don’t use full throttle or allow the engine to labour during the last9 y* m. M* `# J& U" m- R/ u! C+ r; y. S
few miles. This will prevent excessive heat build-up within the turbo when the engine+ b' k6 c% |7 M, x; s; e
is turned off. Also, when coming to a standstill, try to leave the engine idling for a- U: L1 \" v$ P2 Y& [+ @
few extra seconds to allow the heat to decrease. No need for a timer though, just undo4 o+ U- {) a5 o- V3 X# o, y4 o
your seat belt first and then turn off the engine. Never rev the engine just as the
* ]) D7 g: B+ k: oignition is turned off. Remember the turbo spins at a far greater speed then the
* j9 g0 K( S: R! f" m0 Wengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
I% q0 c( }4 Wwithin a few seconds. In reality, none of the above traits will cause a turbocharger to
: a1 H/ ?* J, ?2 n- I7 O7 ]/ pfail immediately, but repeatedly over a long period, they could reduce the life of your) n$ ?9 a, c4 k+ J
turbocharger.9 m! }$ `: |9 s2 t4 j' q M4 |2 P1 T
If it becomes necessary to seek advice about a turbocharger or a turbo related
; Q! A1 z: a0 B6 P0 sproblem, always rely on a professional. Berrima Diesel, together with DTS# O) z0 a* l- Y% t' `/ j
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one0 n0 k- S4 |# x
of the most experienced turbo installation companies in the world. We can advise* _4 i# _, k5 n' U
customers with turbocharged 4WD’s on a wide variety of questions and issues
' }7 z) Y$ L: f/ }: Srelating to owning and running a turbo car.
3 c2 I4 K9 m1 m, E3 Q2 T. W: NIt cannot be stressed too much how important it is, when purchasing turbocharger' s/ g/ K7 h7 z9 S3 }& M
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
5 }. a4 \( W% s/ sso many things in life, quality costs, and there are sometimes cheaper turbos for sale.! j+ }+ ?9 s% @& n
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
8 }: d4 N4 U' x. [that your short-term saving may turn out to be a long-term nightmare.
1 q& s0 @9 l9 b) P5 U( n# I: bWhat is 'Boost'?
0 Z3 k% u0 m3 L9 y; {, |- CBoost is a term used to describe the increase in pressure, provided by the: [4 |& y f3 `# B! w7 X5 E x
turbocharger, to the volume of air, entering the engine. This pressure is expressed in- S X3 S! Q1 M" M
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same& E6 \$ H# O [' n# V7 K
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
7 r2 }5 w+ H/ F14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
1 u; N6 v' K+ B. t" D' I/ Woutput is increased. This pressure increase is called 'boost'.
. s# x, q% F8 P; x$ BHow does fitting a Dynamic Turbosystem effect the power of my/ T; S$ m1 i' N# @5 L1 X
vehicle?6 B9 m7 u- d- I) i* m
Modern 4WD diesel engines, typically produce peak torque (pulling power), at; U9 q9 A. B( t6 I" ~) Z" _
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.& i5 U% X4 s; ^7 z
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
m. P4 L. N7 }+ x4 d7 c' Lmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
' |. l, t# Q% Q8 k) j- cpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,
. \' `0 b! c; h( k/ Nat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
% i4 y- m8 d: Z' B5 P5 J$ u2 F6 ^$ dno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
" {2 x4 r0 L3 gthan the standard vehicle at the same R.P.M.
, ~& i$ I1 T0 @/ kCan I fit a Dynamic Turbosystem myself and, if not, how long and
# a" S: g* b' D% G( b5 ` ^7 ]* [, ], jwhat is the cost of having it fitted for me ?" @. N) {7 j, I! I b
While most competent mechanics could probably fit a Dynamic Turbosystem,
1 h" k3 G1 B% g$ d2 n' c+ b' ytuning requires specialised knowledge. The lack of this knowledge could have5 F, Y- j4 G7 z4 K+ ?+ b
serious consequences. In addition, warranty can only be provided on Dynamic7 ?+ k1 w9 G7 g5 ^0 v$ |+ P
Turbosystems which are installed by authorised facilities.
2 f' v* T m4 U6 j+ |The cost of having the installation performed by Andrew at Berrima Diesel is( K8 m& |1 s8 [
only about 10% of the total purchase price. This provides a warranted, correctly, L! T" X2 l h. t
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
- N/ s5 b- N) r( ?performed in one day.1 k+ c* K' j7 N' ?% W0 e5 ?
What creates the most heat? Fuel or turbo boost?; h# h! O9 O! \8 p' z0 T# q
Diesels do not need an air control (eg. manifold butterfly valve. The only ones0 r( J* B: c1 e
requiring a butterfly are vacuum operated governor pumps) to operate. The more air2 m. J1 |. k7 P/ V5 k
the better. Add too much fuel to the equation and the exhaust gas temperature0 Y1 D+ V- P0 G2 O! w
rises rapidly.
9 f7 m8 ]+ b# J2 I0 T$ NWhat type of oil and how often should it be changed ?
& o* Q( v. \+ X: G& ]9 rTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
/ I0 M9 }. j+ f7 hengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
& r) F, h& D# @# a4 NChange oil at intervals recommended by the vehicle manufacturer.- N- ]. G( R G2 a/ k& M
How long does a turbo last ?4 [+ n% r2 o% z
On average, as long as the engine or longer with regular engine servicing and good
3 j3 [0 K5 }4 v/ }quality engine oil.
2 p6 P& }4 R* |- b. fWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
6 _( Z# m& R8 i3 W0 n) \A valve which relieves boost-pressure between the compressor outlet and engine as$ B4 z' a+ Q/ c u2 R7 B
the throttle is closed (Only required on throttle valve controlled diesels which are
& y; D' k( N# y) s) P1 Urarely seen these days). These are commonly fitted to hotted up petrol cars so it7 s' O# b4 L* X7 q
sounds good changing gears among other reasons!" w9 ?# D) Z& b3 j( d6 R
Can I fit a turbo from another 4WD ?- ~( B$ H4 W2 Q' i" F- e
No, virtually all turbocharger are different inside, even if they appear similar on the
; C' F; u R( S k7 J7 koutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the5 D6 R$ C" v' D5 ~0 d
specification.
7 x' z+ ? H5 n4 e( J( `$ N' oShould I leave my engine ‘ticking over’ before it is turned off ?4 e- M1 q# E0 N7 ^3 l0 o
Not for normal every day driving, but still worthwhile if the engine has been under8 O/ G+ q% x5 n4 B4 n7 r5 P5 s h
load or raced before being turned off. e.g. Towing a caravan or after climbing a long' P- V" U) W u& V) T7 S
incline.+ N6 p/ O+ G2 v& W. g' Y/ ~4 h
Why is it important to balance a turbocharger ? v, ~* [0 F1 n: j$ V' ~ M
Without highly accurate balancing, vibration will create a whining noise, reduce
: J" x# G& G, s% tturbo bearing life and reduce turbo efficiency.
0 G" n; D6 W1 W3 X( PHow much boost does my turbo produce?+ v* B% y5 U4 X- k' U( `5 U1 N
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
, K' d2 e$ Y5 l' g9 C: Z5 qIntercooler turbocharged engines running upwards of 13PSI.
# @% p( ]! b, n* X! N& |: pHow many psi in one bar ?4 M6 s2 n, W$ z9 T# D4 A
14.7 psi = 1 bar.
+ e7 v! ~' q: jAre all actuators the same ?8 g0 y" N, y: E ^- E$ p ?5 `
No, each has a different opening pressure and rate.2 V. x( r8 U' A: u% M% t
Oil in the turbo inlet pipe - Should I be concerned ?) j: Q" |# k" W
A small amount of oil usually exists, drawn in from the engine's crankcase breather
c: x+ |1 W: _ |8 a' tsystem. High engine wear will increase the amount of oil found, and will require
- B; F% _8 C3 _: V( i3 pfurther engine tests (not turbo).
) n. N1 [0 [5 Q1 zShould a turbo be serviced ?, U( S2 c! ?% F4 V) x8 I1 X1 y
No specific turbo servicing is required, but regular quality engine servicing is needed L8 x2 C# m$ f5 O2 _
to reduce the chance of turbocharger problems.
; C7 b' @0 l, \& W/ [& c/ J ZWhat is a water-cooled turbo ?
3 X" s6 k2 }; V6 l& J; z' R, gThe central part of the turbo, housing the bearings, is surrounded by a water jacket
1 Q: M& |# S, P+ J7 ?through which the engine's water coolant is passed. This water continues to circulate
( U6 b. F! u1 H& f" pafter the engine is turned off, cooling the turbo, and preventing heat soak.
% a l8 `3 O8 K2 v! B9 JDo I need to up grade my exhaust ?3 t& H* b) [8 C) m) H: A7 G9 a% t
Generally not. Our systems are designed to run utilising as much genuine component7 y: ~8 w1 w" Y
as possible. Some systems on the market promote exhaust change as it is required by! Z& L' w# c% M; n% M
that particular turbo. Doing so usually picks up more noise than performance.
9 x5 X- f6 Z8 \% p1 K! E4 n( @How noisy should a turbo be ?
$ U( |& {; d$ @ |( S+ ~1 @1 zOnly an unbalanced, worn out or damaged turbo will produce any significant turbo
$ k, I; x0 }6 F% ]noise.. Q. `2 c5 H5 {; r2 [
What is an intercooler ?
0 P1 n9 m* X% ?$ CA special type of radiator which cools air before it enters the engine. As a turbo5 |& p/ |5 x8 v
compresses air, the air heats up. Power can be increased if the air entering the engine
- I+ t1 Q, S1 S! R5 c R5 g6 Pis cooler. The cooler air is more dense meaning that more fuel can be injected for
$ G: W8 r2 ]8 n6 Omore power.: r" b' A+ C4 b* C9 W- {6 J) n1 o* F% j
Will my vehicle run ‘cooler’ with an intercooler ?
+ o- W! G {; c! zTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles
% \# p0 }8 w5 [ Xrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
& @0 @9 Q* r" Z9 e( lair passes out of the Intercooler over the air conditioning condenser and finally the# J2 h( K3 C# l0 e6 p/ Y' A
radiator. The poor old radiator is left with scraps of extremely hot air and then is
3 c, K/ x4 F6 hexpected to cool the engine. We don’t advise fitting them as hot Australian conditions1 d; Z4 L, {% W1 n1 V7 M; { Q
can often be the catalyst for engine heat problems.
3 u O& a0 ?6 a& A. gWhat will happen to my fuel consumption?- K# y4 M; R- T! \0 i/ v, G4 @
More power generally means more fuel. With a diesel turbo system, fuel consumption& }% H: I# @1 ^- I, F
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
