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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. " U: ~" C9 \5 z1 t+ s6 w3 q# n
: r% M/ X. L8 k
% A# K# L+ N( R) P6 {7 nTech Sheet6 s6 _9 G" M+ E4 @
‘Frequently Asked’: E6 T( G' l( e0 d! f$ x
‘Turbo Questions’(In no particular order)
2 O+ @9 I- Z7 n9 c. _Your turbocharger is engineered to match the specific requirements of the engine it is" x& Z9 j$ {9 W) S+ T
fitted to. Each is dependent on the other to maintain optimum performance. Don't
# G8 q" \4 O; G2 Uthink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
3 ?/ j% K9 g3 c% Nturbo's requirements are similar to the engine’s. It is, therefore, essential that
( Q3 C G: a9 a1 oscheduled servicing, using good quality oils and parts, is central to caring for your; n- K; g$ M) p% P) m6 W
turbo.- t& X4 P- _7 l: U6 P) H
In many instances Berrima Diesel receive turbochargers which have been
& J* c2 }/ z: Z6 X$ cmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.3 ]( ^ Z: n2 x8 }. p% m- V h
Incorrect fault finding is often caused by a lack of product knowledge. Many
5 f6 Y5 D9 W+ G/ f4 X8 @contributory items around the engine bay can trick the unsuspecting into believing the
5 J9 N* o( @! p; ^. ~% e$ Aturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
0 M7 C9 S+ w7 }2 E5 adiagnosed before a replacement turbocharger is fitted, the problem still exists!' |2 x L9 K3 l$ Z& g" _0 t2 x
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A$ U4 f% d+ \- ~- j1 m5 b8 \4 Y, C+ H4 @
turbo can be killed in many ways.& I3 K1 t" Y9 y" y4 x7 Q2 A a
Foreign object damage results in either the air intake "compressor wheel" or exhaust
% y1 K: h5 @& Y9 U: X8 n"turbine" wheel being damaged. The former is often caused by someone accidentally$ h+ V! n6 ^$ N# y& Y" M1 v
leaving a nut or other foreign body in the air induction hoses. Please be extremely2 K! m |; m9 a& \
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
5 J% m% i. Y% Vthis may be caused by part of an engine component, such as a piece of valve, exiting# B7 z, @. y; q! @. {& T; C- n
the engine in rather a hurry! In both cases it results in severe turbocharger damage, \- o" J; y ^1 {
instantly.
" \9 v+ I3 i, ]& a7 OTurbochargers are simple in operation, but manufactured to precise tolerances as fine
) z" y. |3 Z3 d0 J; ~as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single8 u6 ~, P0 S. ^8 t: g1 K' |
turbocharger many times, including final assembly. The balancing methods and
( I" i3 N# ^; mprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine8 P: v8 Q b$ L- t9 T" ` |
tolerances required for today’s high speed turbos. It is now common for# x1 {0 P4 a8 W, R
turbochargers to spin up to 150,000 rpm +.
# N: ?1 O% J6 ]! P0 B! ZThat’s approximately 35 times faster than most diesel engines rev at the red line!
; K/ r% t; c E( ISophisticated machinery and highly trained factory staff ensure that the highest4 s" p0 N- t4 d8 u3 p, j
standards are always maintained.$ R$ T- B* q$ o( b8 I6 |% O; ~$ I/ e: M
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
5 Z1 T% D& E& q$ g- |, a% z3 qto always allow the engine to warm-up fully, until the water temperature gauge6 Y$ J( F" [/ W
reaches normal, before full throttle is used. Try to plan the end of your journey0 e& Z( \) u. N( j1 `! w* f
sympathetically. Don’t use full throttle or allow the engine to labour during the last
0 {) w/ w3 M! F3 T0 o% M2 F4 Sfew miles. This will prevent excessive heat build-up within the turbo when the engine" \$ S7 i" g+ v1 A b
is turned off. Also, when coming to a standstill, try to leave the engine idling for a2 D, o$ m" e2 E
few extra seconds to allow the heat to decrease. No need for a timer though, just undo R% H* W( T5 w- W. B
your seat belt first and then turn off the engine. Never rev the engine just as the: @0 I) F5 e; h/ [' Y: I
ignition is turned off. Remember the turbo spins at a far greater speed then the" v* a5 Y1 {3 @5 P, F
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
9 T l( U, V5 A/ V0 O( Y- \) ~8 fwithin a few seconds. In reality, none of the above traits will cause a turbocharger to8 b) ~2 P: ?/ A* b" [2 F
fail immediately, but repeatedly over a long period, they could reduce the life of your
* g' {' @: |, s3 V1 u! l# pturbocharger.$ x6 u, q5 N7 V" J* ]
If it becomes necessary to seek advice about a turbocharger or a turbo related. v6 z" _9 G) V
problem, always rely on a professional. Berrima Diesel, together with DTS
) Q; n$ P) W5 e# w, } ]turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one; `/ i/ H7 L4 p2 |' V/ p- T
of the most experienced turbo installation companies in the world. We can advise
! _" N# l* W" N# R" k; ecustomers with turbocharged 4WD’s on a wide variety of questions and issues
6 N5 b% @% W# }* V( [& s( Urelating to owning and running a turbo car.7 u3 e+ F5 F+ ]4 }% \
It cannot be stressed too much how important it is, when purchasing turbocharger g7 m. e- l& P$ d {
system, always to choose the top brand name -Berrima Diesel. Consider this. As with5 Z) Y6 q$ i m' @0 W
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
P, ]1 I5 |- a0 `9 h* qWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
$ ~0 t2 G/ j4 lthat your short-term saving may turn out to be a long-term nightmare.
, H9 [$ J ^, H1 UWhat is 'Boost'?! j$ I) \7 D6 y% U! v7 Z% b
Boost is a term used to describe the increase in pressure, provided by the' u1 w4 W7 Q- Q' B6 Y: l8 @
turbocharger, to the volume of air, entering the engine. This pressure is expressed in+ f9 ^, V' A: J- B$ E
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
) x" j5 Q2 f, V6 H$ ~- K, ^thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
; `3 a8 w: W! e3 ]9 }+ {# Y- A. f14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
0 n+ q% A$ @5 ?3 ^output is increased. This pressure increase is called 'boost'.1 y) P: j& w* }; M w
How does fitting a Dynamic Turbosystem effect the power of my" l6 f0 L1 A4 N
vehicle?* ]1 b k+ ?9 ~
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
0 _( i) L; c. g. [7 [9 Taround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
/ i+ H& m) y' i5 K# y2 v( u8 P/ `Turbo boost starts at approximately 750 R.P.M. and rises progressively to its# n" [+ q% Z \) J% C% {
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
) w5 e% d1 J# z/ Tpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,
0 y9 ^& v$ t! k( K4 O( Vat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
- ], z& u* t) \* K' Tno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
) N+ _" T: \4 R5 x4 T. w- ]than the standard vehicle at the same R.P.M.' j' d; M2 a4 e1 j' I7 _( F [5 N5 I3 s
Can I fit a Dynamic Turbosystem myself and, if not, how long and) M' ^+ e9 S, D2 J
what is the cost of having it fitted for me ?% m" b: Z% q4 l R
While most competent mechanics could probably fit a Dynamic Turbosystem,
7 r4 Z p% ]# }4 c' {tuning requires specialised knowledge. The lack of this knowledge could have
3 Y* X# @/ l; Mserious consequences. In addition, warranty can only be provided on Dynamic& r' L# I$ t! y7 H
Turbosystems which are installed by authorised facilities.* P, Z5 e, L, T" N
The cost of having the installation performed by Andrew at Berrima Diesel is5 V8 ]' c2 V: i r# S
only about 10% of the total purchase price. This provides a warranted, correctly
5 s2 o* T7 m) C+ }& Y# Rtuned, "no hassle" installation for the customer. All diesel vehicle installation can be
* p% n$ T5 f2 o. eperformed in one day." O8 q8 g' }7 U! B9 M7 J$ v
What creates the most heat? Fuel or turbo boost?
% P3 Q7 N# e \Diesels do not need an air control (eg. manifold butterfly valve. The only ones
' g% G8 ^! a5 j, D, d8 P2 U$ yrequiring a butterfly are vacuum operated governor pumps) to operate. The more air
( r* a+ ^ O8 zthe better. Add too much fuel to the equation and the exhaust gas temperature
$ s4 y, g. ?7 w/ `+ D0 C. W3 [rises rapidly.
7 Q3 a: \) B: [; v; O6 UWhat type of oil and how often should it be changed ?
8 A( U# b a* V0 oTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic) Z- t) H; m0 x/ M# K; j
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .3 J# M" X3 ?' R2 S; t# |
Change oil at intervals recommended by the vehicle manufacturer.! G# @& z' R: e8 s9 e
How long does a turbo last ?
" m/ _. l: u/ X9 w& qOn average, as long as the engine or longer with regular engine servicing and good3 I5 g! Q' S1 r ?2 J8 G
quality engine oil.4 b& h* C. l, G9 G
What is a ‘dump’ valve or ‘blow-off‘ valve ?
, J% V4 ?3 n1 O+ G r \8 qA valve which relieves boost-pressure between the compressor outlet and engine as( T$ m/ P/ y$ H# X; I' a( \2 U
the throttle is closed (Only required on throttle valve controlled diesels which are( z" r: j9 ~( z s5 Z/ b& \
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
3 W, @9 k$ ~0 b# rsounds good changing gears among other reasons!
; `7 |8 Y4 g0 s1 A" hCan I fit a turbo from another 4WD ?9 y2 E5 _) Y+ Z& W3 w$ K% E9 I2 P7 X. ~
No, virtually all turbocharger are different inside, even if they appear similar on the" A9 }5 Z" {! i2 ?9 S8 I' p: Z
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
. D, [: Y7 y; P2 r2 Mspecification.
5 q ?9 Y1 }9 O# e1 C( iShould I leave my engine ‘ticking over’ before it is turned off ?
" M5 t2 T, a z8 _% l" d+ u3 `4 cNot for normal every day driving, but still worthwhile if the engine has been under
* y* |( d) b$ Qload or raced before being turned off. e.g. Towing a caravan or after climbing a long: ^: v9 i% P! }+ b! @3 q% I& H. S; [
incline.$ F# f) ^1 w# V" D
Why is it important to balance a turbocharger ?
2 m/ m- T: f% s$ LWithout highly accurate balancing, vibration will create a whining noise, reduce' r2 b- b+ D( M1 K& Z. _4 h( D4 N/ `
turbo bearing life and reduce turbo efficiency./ C0 l) T K$ w, X0 W# c# W; k, C
How much boost does my turbo produce?
- q6 }( l5 v( T( J/ nCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
% y0 i4 h" s$ ]& C) h; GIntercooler turbocharged engines running upwards of 13PSI.& m7 ^' |3 N, Y0 b' y# V @: k
How many psi in one bar ?" K2 `7 A/ H5 E* z2 _: L
14.7 psi = 1 bar." {" C9 P8 k2 I0 \+ V$ o: e% W
Are all actuators the same ?
6 z! C# L' V' G- |- p, HNo, each has a different opening pressure and rate.$ R" R5 |8 e3 H, \& O( y
Oil in the turbo inlet pipe - Should I be concerned ?
/ y7 K- i7 v' R" k, m, IA small amount of oil usually exists, drawn in from the engine's crankcase breather" ^0 Y, ~* n) ]* g. K/ V3 G+ L2 H7 O: d
system. High engine wear will increase the amount of oil found, and will require
; d& S4 D7 A' H$ O$ x) Cfurther engine tests (not turbo).
5 x: I9 W, M5 L/ O# @/ xShould a turbo be serviced ?
% ^- F6 Z3 z$ Z: tNo specific turbo servicing is required, but regular quality engine servicing is needed' m6 ~% G8 Q" Q$ _6 K( q& h' A; U
to reduce the chance of turbocharger problems., [$ W( k; s6 t1 h5 e
What is a water-cooled turbo ?
7 B9 _5 r0 K, v+ c, Z9 Z4 m! PThe central part of the turbo, housing the bearings, is surrounded by a water jacket' v# Q1 E- U. U! Y+ [
through which the engine's water coolant is passed. This water continues to circulate
) i$ G' K4 U7 s1 o$ q" [$ @after the engine is turned off, cooling the turbo, and preventing heat soak.
5 }4 G# ]- @- t {; |: I5 Q2 `Do I need to up grade my exhaust ?* E% u+ ~, m- c2 q6 {8 i+ |
Generally not. Our systems are designed to run utilising as much genuine component
1 p$ @6 Z8 r) G8 ~4 m7 O& P$ m) ras possible. Some systems on the market promote exhaust change as it is required by' x& l0 I( |' R
that particular turbo. Doing so usually picks up more noise than performance.) F# R* r/ w2 e! W6 {/ E: C1 g
How noisy should a turbo be ?, G, D2 x' G) g* V& ~
Only an unbalanced, worn out or damaged turbo will produce any significant turbo- t2 H% J! i5 T
noise.% U- ~+ W5 w3 H/ Y" p4 y' d+ ?
What is an intercooler ?" S; f9 B. ]) d3 M c. v7 }" v' Z6 A
A special type of radiator which cools air before it enters the engine. As a turbo
9 ^/ K0 K& X6 Z; F. Mcompresses air, the air heats up. Power can be increased if the air entering the engine; R1 G# Z% f( b+ R8 w
is cooler. The cooler air is more dense meaning that more fuel can be injected for
3 N; ]/ b0 Q& O4 P* Ymore power.
0 c$ m( d! j( q7 X) mWill my vehicle run ‘cooler’ with an intercooler ?
9 D' P3 G& L% M7 M: Y/ j3 nTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles) {4 `8 B! x8 e: M
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
1 P( \! b" ~0 q; g7 r. ~* ~% eair passes out of the Intercooler over the air conditioning condenser and finally the0 S4 S% D& q: e6 h5 c9 |8 @
radiator. The poor old radiator is left with scraps of extremely hot air and then is
% r8 _4 o$ l: \% J% ?; M! l4 fexpected to cool the engine. We don’t advise fitting them as hot Australian conditions
2 Q9 d* [+ j& u2 c. [# z! zcan often be the catalyst for engine heat problems.% X& v, M+ L$ [* r5 W- d
What will happen to my fuel consumption?
' e2 v, k, A& I0 L m2 fMore power generally means more fuel. With a diesel turbo system, fuel consumption
8 x4 i8 K- d a5 Kstays 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
