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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. / s+ `% l* I5 @" a, v
+ c8 h6 N: T8 H
( |$ {1 C% t, R% y7 N+ H5 VTech Sheet
: h5 O1 h& ]3 n5 N" K‘Frequently Asked’2 w' \" m# [2 h5 k" A
‘Turbo Questions’(In no particular order)
! j+ J, c5 ?/ P0 e5 s% kYour turbocharger is engineered to match the specific requirements of the engine it is
- j0 Q+ L s! j# ? `) }fitted to. Each is dependent on the other to maintain optimum performance. Don't1 O2 A; @0 v! y. j9 ]( x
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The) x2 ~: Q" f. r0 o
turbo's requirements are similar to the engine’s. It is, therefore, essential that0 G3 W4 V# P2 }+ \6 `2 V
scheduled servicing, using good quality oils and parts, is central to caring for your
" V8 l) S& Q9 h. F: Kturbo.) L9 _0 h- ~. C, E" K
In many instances Berrima Diesel receive turbochargers which have been0 H1 t! ?( P/ a7 C* P, n7 o! `
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.; A* f( I/ Q4 K$ H9 D9 |
Incorrect fault finding is often caused by a lack of product knowledge. Many
0 m4 |4 z$ p9 Ccontributory items around the engine bay can trick the unsuspecting into believing the7 P9 C+ ?- }/ E- r+ f
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
4 k' `3 {( o Wdiagnosed before a replacement turbocharger is fitted, the problem still exists!
& @( R- f% f4 AWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
# i3 i# G Q( f, {* y V" E8 Gturbo can be killed in many ways.4 M# k% ?! R9 c7 n
Foreign object damage results in either the air intake "compressor wheel" or exhaust
- B# ?8 |; r; z: |4 Q"turbine" wheel being damaged. The former is often caused by someone accidentally
1 S6 j3 O! f5 R z7 b# J) ?- ~$ }/ Dleaving a nut or other foreign body in the air induction hoses. Please be extremely
! r+ X# o0 ^- \% x- k9 vcareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
" G% U3 ?4 C" s5 ~& N5 J% Qthis may be caused by part of an engine component, such as a piece of valve, exiting
1 G& A6 S# r' x4 Othe engine in rather a hurry! In both cases it results in severe turbocharger damage
+ w7 g& B. e3 d" L) Ninstantly.
2 [) g G( |+ d# ~6 e0 c3 I( _Turbochargers are simple in operation, but manufactured to precise tolerances as fine1 ~4 i- o1 B" n! p1 t
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single- |- m7 ?9 f* }6 w' p9 q" k
turbocharger many times, including final assembly. The balancing methods and/ a& ^4 G7 `) \6 K
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
) _/ _# i3 @4 \1 N( U" O- Z3 A( Ktolerances required for today’s high speed turbos. It is now common for
) N- ]# u, V& R) a8 I2 `- Uturbochargers to spin up to 150,000 rpm +.9 V5 Q, ~, M1 Y: P
That’s approximately 35 times faster than most diesel engines rev at the red line!" x" S* h5 f* o+ P
Sophisticated machinery and highly trained factory staff ensure that the highest
3 J1 }6 r( T7 a2 P( \standards are always maintained.
. m, j) H6 p( v) O! `Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
/ t( i' L9 }" [, \1 l% Oto always allow the engine to warm-up fully, until the water temperature gauge% \! z9 l) ^0 t* y$ y
reaches normal, before full throttle is used. Try to plan the end of your journey
9 d& V* f' C) F# L1 ^sympathetically. Don’t use full throttle or allow the engine to labour during the last0 ?5 o: A6 i4 q5 H' I, [* Z
few miles. This will prevent excessive heat build-up within the turbo when the engine# h5 t& o9 U/ O. b+ s0 i6 A
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
* p% C# h% h" V3 |' u. I) Tfew extra seconds to allow the heat to decrease. No need for a timer though, just undo
6 g: y) S7 M% P) @5 I3 U6 V1 _. Uyour seat belt first and then turn off the engine. Never rev the engine just as the
# s# |; U+ j6 [6 @5 } Q! Bignition is turned off. Remember the turbo spins at a far greater speed then the% V/ n7 j4 D7 k5 I0 j4 w
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases6 S- y, P: K A" S0 T: [& u
within a few seconds. In reality, none of the above traits will cause a turbocharger to% v+ k' R) Z; W4 k) A/ Z; N. k
fail immediately, but repeatedly over a long period, they could reduce the life of your
, k4 }/ c" I& F8 V2 sturbocharger.
8 o5 z% a. L5 p* k9 xIf it becomes necessary to seek advice about a turbocharger or a turbo related
9 R+ a4 z( S% q# n2 i2 Y9 Pproblem, always rely on a professional. Berrima Diesel, together with DTS; X$ k6 [( f. u
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
0 E6 F' x; v- d. L eof the most experienced turbo installation companies in the world. We can advise
" ^: `0 L4 r# E) }! C& `& fcustomers with turbocharged 4WD’s on a wide variety of questions and issues5 {9 H' w; U$ L/ o4 ~; j
relating to owning and running a turbo car.% e4 D. u$ f2 Q5 ~! q8 L" K
It cannot be stressed too much how important it is, when purchasing turbocharger
$ ], F3 e6 h: ]- N" E5 `' ksystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
& g$ S8 U/ |: ]so many things in life, quality costs, and there are sometimes cheaper turbos for sale.1 |( r6 y7 G' m& n% u
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk' T8 X- e# x" U" o# J) o7 X
that your short-term saving may turn out to be a long-term nightmare.! U. @8 q( y3 D* v- m, F/ h
What is 'Boost'?
) N3 v0 R% E, v6 I2 T5 }Boost is a term used to describe the increase in pressure, provided by the! [# }) }4 a6 ~ b
turbocharger, to the volume of air, entering the engine. This pressure is expressed in6 u) ?+ m" e% g& D. [" l) h
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same2 d3 \( c8 V7 ]# L9 u
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
/ b; E8 Q, N* v4 Q7 b& L4 {- E14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
8 E. U7 j# g& `' w. I! j( V- Koutput is increased. This pressure increase is called 'boost'.8 v+ F% H# f' `
How does fitting a Dynamic Turbosystem effect the power of my# E5 L5 j5 U f' A$ J- r8 D; C
vehicle?2 }1 u" D3 Z- T. K
Modern 4WD diesel engines, typically produce peak torque (pulling power), at7 f( p% H* s2 e9 e8 t, O
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
; |8 G- ~0 ]/ s$ S# p+ x. b& xTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
6 ], j. [% }3 {maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this1 E$ ^+ ^3 X, X2 B, I8 o
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
2 N$ x7 X& K' _0 x1 v; q7 Oat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
+ i+ Z! c/ Z5 _( l" Ano point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater/ R) C0 Y6 ]% ~3 Y( X
than the standard vehicle at the same R.P.M.
5 G* \ x8 N6 U# C; D* yCan I fit a Dynamic Turbosystem myself and, if not, how long and
* k' y" Q) ]7 ~- P+ k) o" dwhat is the cost of having it fitted for me ?
% Z/ _8 N* \# M! c) Y, CWhile most competent mechanics could probably fit a Dynamic Turbosystem,. _- m0 D8 f: T5 | q7 W
tuning requires specialised knowledge. The lack of this knowledge could have8 v# z' ~1 m/ m }( h: i. T6 g
serious consequences. In addition, warranty can only be provided on Dynamic8 M5 X& y/ F$ ~
Turbosystems which are installed by authorised facilities.
( H+ q& z7 ~! ]( d) |4 j7 F- \The cost of having the installation performed by Andrew at Berrima Diesel is
0 M. Y, L1 ^5 c/ ronly about 10% of the total purchase price. This provides a warranted, correctly
/ j! \1 n, |3 o0 b* Atuned, "no hassle" installation for the customer. All diesel vehicle installation can be
+ U5 S+ X% C/ Eperformed in one day.( Z5 f$ U. X9 S: Y m
What creates the most heat? Fuel or turbo boost?
3 u3 v) p5 a6 v T% @. S" @8 ZDiesels do not need an air control (eg. manifold butterfly valve. The only ones1 F o8 o+ P' u( H1 w+ C
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
2 N* {$ {: O8 a$ d& Q( c# ^the better. Add too much fuel to the equation and the exhaust gas temperature
, Z7 M0 p6 f, l$ y) Nrises rapidly.7 H7 O: F' b3 r1 E& j* G
What type of oil and how often should it be changed ?
" k& k/ h d0 w' }* E0 N) D( BTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic- P$ m3 c( c( C2 ?
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
0 g+ m9 g9 n( _ F% I' @2 XChange oil at intervals recommended by the vehicle manufacturer.6 E6 r2 s% W" Z6 d8 b# \* \0 l
How long does a turbo last ?
8 d4 _8 J, l! E& ]( u9 z2 F9 MOn average, as long as the engine or longer with regular engine servicing and good, C" U' B/ J6 b8 e- C$ b
quality engine oil.
, ~6 f6 _+ f o: o1 x8 j# sWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
% ^1 p9 c/ W: A# t! k9 \) E; e VA valve which relieves boost-pressure between the compressor outlet and engine as
( }6 ^0 [% Q' b( K3 e+ qthe throttle is closed (Only required on throttle valve controlled diesels which are
: W' b6 X/ D$ W' H. Trarely seen these days). These are commonly fitted to hotted up petrol cars so it# W1 @! S+ h+ w- L- |' F
sounds good changing gears among other reasons!
: x# }. i( _) BCan I fit a turbo from another 4WD ?+ T3 X8 n% f( R
No, virtually all turbocharger are different inside, even if they appear similar on the) u- @5 Z0 X2 h* ]2 Z
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the# G ^- ]; d( C! d
specification.
4 o: j1 q9 A! y" ~9 n3 OShould I leave my engine ‘ticking over’ before it is turned off ?
" s, L# ^; u' O" m% a! F3 KNot for normal every day driving, but still worthwhile if the engine has been under
! V% U1 _) A' b5 E% Hload or raced before being turned off. e.g. Towing a caravan or after climbing a long) z2 E0 c' E$ u9 f
incline.
5 j; Y* H& ^* g' O) ?7 \7 o. TWhy is it important to balance a turbocharger ?3 T3 V$ z( w4 k4 }
Without highly accurate balancing, vibration will create a whining noise, reduce
$ s$ a( U" f9 G" n; {- Eturbo bearing life and reduce turbo efficiency.
. {2 q, X: P, `How much boost does my turbo produce?
3 y5 P5 H" R- h; X3 [6 M. nCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
; V- E9 f; e3 y/ ~6 v; ~9 vIntercooler turbocharged engines running upwards of 13PSI.$ B2 c2 `* {" g3 O4 W+ u( u
How many psi in one bar ?: G3 N$ t4 m+ `7 | ~$ G
14.7 psi = 1 bar.- z3 I$ T' @; p4 D* B c
Are all actuators the same ?
! ^1 c' H8 L( ^* K8 ^- ]) xNo, each has a different opening pressure and rate.$ V" C- c9 ~4 H4 p
Oil in the turbo inlet pipe - Should I be concerned ?1 y& Y0 O" v, g' b8 }% a% C. X
A small amount of oil usually exists, drawn in from the engine's crankcase breather
* N9 t$ ]6 J; V: w* D- Usystem. High engine wear will increase the amount of oil found, and will require
B/ O {4 E$ w2 |further engine tests (not turbo).
. g) T: d; |9 e1 p- u" BShould a turbo be serviced ?
$ H0 [" H% D* ]No specific turbo servicing is required, but regular quality engine servicing is needed2 M# Z/ g. e z3 V2 Q( q. E9 Y: `0 p
to reduce the chance of turbocharger problems.
9 o* ?1 P8 _9 b6 g2 b* iWhat is a water-cooled turbo ?4 m& h( l: m. I
The central part of the turbo, housing the bearings, is surrounded by a water jacket/ s; D- H# z& F
through which the engine's water coolant is passed. This water continues to circulate2 y# p. w9 M! @6 a
after the engine is turned off, cooling the turbo, and preventing heat soak.
) ^- q# J$ G0 M+ L8 ?3 |4 y) G3 kDo I need to up grade my exhaust ?
# ^, X$ ^7 D" f1 kGenerally not. Our systems are designed to run utilising as much genuine component0 c! D+ i& l- c3 u- v+ X
as possible. Some systems on the market promote exhaust change as it is required by' n# @( T5 ^% z) `" ]
that particular turbo. Doing so usually picks up more noise than performance.; _$ P" G2 J7 K' L1 h
How noisy should a turbo be ?5 r; @5 X! r ?+ u$ c# S( Y* B: H
Only an unbalanced, worn out or damaged turbo will produce any significant turbo, q9 ~: Z3 ?& {0 }; G1 h! Z
noise.
3 K: K0 T, ]0 f2 N$ B0 V1 q1 T' i2 P$ kWhat is an intercooler ?
& N# s k8 r+ F0 [' D: [2 `; CA special type of radiator which cools air before it enters the engine. As a turbo
/ R: l. H2 U9 T+ b3 hcompresses air, the air heats up. Power can be increased if the air entering the engine
+ M3 @4 _ v! Vis cooler. The cooler air is more dense meaning that more fuel can be injected for% j6 L" x' e5 q' U9 h5 z" e. M0 \
more power.% f# T0 i' }/ l
Will my vehicle run ‘cooler’ with an intercooler ?
( b' ?' x0 [* A4 G: {, D1 l! GTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles
! X6 B ]* a+ ], ?) y7 Grunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
" v7 W* [- L8 w5 [7 _1 k$ Qair passes out of the Intercooler over the air conditioning condenser and finally the; a' u( x8 _# X, G! O
radiator. The poor old radiator is left with scraps of extremely hot air and then is
* G$ a4 B; @ S. v; Jexpected to cool the engine. We don’t advise fitting them as hot Australian conditions
( o' a9 O, p( H7 P: z t; @* }can often be the catalyst for engine heat problems.# e# M4 A K& I; K- i* Z
What will happen to my fuel consumption?6 @* _6 e2 _9 a
More power generally means more fuel. With a diesel turbo system, fuel consumption
0 y: ]* U8 A+ j; zstays 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
