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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. 1 e9 L4 I9 P5 Y: Y7 k3 `# ~
2 h7 H8 N. G/ F7 a) F/ y+ \' L
% u+ R+ n6 v* o) P
Tech Sheet
6 @* f+ ~+ H7 |' e* i& R‘Frequently Asked’
. ^8 z5 P* U7 \7 u‘Turbo Questions’(In no particular order)% \/ G+ s# Y3 [9 k6 h' D' v4 |! y
Your turbocharger is engineered to match the specific requirements of the engine it is
0 ^) {# b4 X0 Y) \+ nfitted to. Each is dependent on the other to maintain optimum performance. Don't
: _2 J$ Q) t3 m: K3 athink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The5 e% z! t/ f& Y0 E* t
turbo's requirements are similar to the engine’s. It is, therefore, essential that) W: Y8 h! ]$ }- Y9 V
scheduled servicing, using good quality oils and parts, is central to caring for your
) S5 W6 n9 m K5 r" i/ pturbo.. W9 a! u. I! |0 J9 Y
In many instances Berrima Diesel receive turbochargers which have been
( m* r* l: O2 Rmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
5 n: ^8 B& J% c' K9 YIncorrect fault finding is often caused by a lack of product knowledge. Many( K N/ I6 ^. J* h9 n' r; F
contributory items around the engine bay can trick the unsuspecting into believing the( R8 }/ W- b/ h
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not) y: K% u% ]/ U* ?- q
diagnosed before a replacement turbocharger is fitted, the problem still exists!4 q; O7 ]6 F6 |
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
5 P6 s: d5 G# M! d. B" M/ qturbo can be killed in many ways.( y# D) S( S; {' m) x! W
Foreign object damage results in either the air intake "compressor wheel" or exhaust* M' z# H5 a6 C& w
"turbine" wheel being damaged. The former is often caused by someone accidentally' n0 A) G9 V& M: H% o8 Y& A
leaving a nut or other foreign body in the air induction hoses. Please be extremely+ e& R( B6 M$ ~' i/ _
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
5 R n0 b$ F; {( Z! r( jthis may be caused by part of an engine component, such as a piece of valve, exiting0 E# r) v3 @4 o) T: c5 A
the engine in rather a hurry! In both cases it results in severe turbocharger damage( S1 Q& F2 v! x* Z' r) y" j v
instantly.
, ]+ s1 c1 U1 V( p" ZTurbochargers are simple in operation, but manufactured to precise tolerances as fine- y% n4 J& Z% o9 h( Y7 y0 l6 F
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
+ P4 u# E- Z$ x# Q6 z) g) w' fturbocharger many times, including final assembly. The balancing methods and
5 E: `# {* u/ o. ~9 d; d( E9 fprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine0 I- z9 t: p$ i0 b$ a
tolerances required for today’s high speed turbos. It is now common for
+ }1 _# S8 L, zturbochargers to spin up to 150,000 rpm +.2 W4 W" V* Z# [4 B% U0 x2 `) F
That’s approximately 35 times faster than most diesel engines rev at the red line!
4 i7 t0 Y p) Q: x% q5 dSophisticated machinery and highly trained factory staff ensure that the highest/ L# v- d! S! K5 A
standards are always maintained.4 f& R; _3 ~2 |4 R( r
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
: S6 ?% s8 Z7 Z6 o9 bto always allow the engine to warm-up fully, until the water temperature gauge
( o: N" {2 C: V0 P! X- W' ]reaches normal, before full throttle is used. Try to plan the end of your journey
# y% I) a) _5 [sympathetically. Don’t use full throttle or allow the engine to labour during the last
& J4 l, p0 Z9 B$ B* {few miles. This will prevent excessive heat build-up within the turbo when the engine* ^9 H+ S, w( c+ a% h" R4 J4 \# ]
is turned off. Also, when coming to a standstill, try to leave the engine idling for a, J% q5 u$ K, b, H* w6 u3 P
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
/ {' `$ [9 Q6 P$ p, \2 lyour seat belt first and then turn off the engine. Never rev the engine just as the
6 r/ {* \( {( P. Tignition is turned off. Remember the turbo spins at a far greater speed then the p5 w8 N; G D6 Q4 E
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
" g. h7 G" E4 H( Ewithin a few seconds. In reality, none of the above traits will cause a turbocharger to7 j- d1 C3 X- a* V% I* O
fail immediately, but repeatedly over a long period, they could reduce the life of your( w. C; K* {/ ^6 F9 V
turbocharger.
! O4 ]. ^5 ], |. u" M) m! ZIf it becomes necessary to seek advice about a turbocharger or a turbo related0 @% I) T' T7 y! d, f7 o! o
problem, always rely on a professional. Berrima Diesel, together with DTS
5 |$ e; O" |4 f. T3 o7 c' kturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one* N+ x! ?4 H. t8 ^
of the most experienced turbo installation companies in the world. We can advise) C$ U6 q3 F7 q5 H" y0 Q
customers with turbocharged 4WD’s on a wide variety of questions and issues
$ B& ~5 u" r0 i9 G! s- [7 W% Xrelating to owning and running a turbo car.2 y* Y& J/ n7 z$ h( Z, f6 D$ A
It cannot be stressed too much how important it is, when purchasing turbocharger
+ v0 B$ R- k1 k3 U) d" Usystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
! D1 u$ @' v4 _; D! y+ Wso many things in life, quality costs, and there are sometimes cheaper turbos for sale.5 Z( |$ C. `6 m) U
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk% x9 x. e" v1 \, q
that your short-term saving may turn out to be a long-term nightmare.
3 I" ]$ |0 U8 {4 RWhat is 'Boost'?, U; R- w; c4 I1 J. a# A$ V
Boost is a term used to describe the increase in pressure, provided by the
. i8 v. H3 y% D8 H6 g+ zturbocharger, to the volume of air, entering the engine. This pressure is expressed in
% G! S! J" _ l/ ka number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
2 W" `6 v! _0 x9 ~, ]0 Kthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa r A: a1 a; ?5 f, O+ L
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
6 K( @7 ~! P; C( N8 ] S- boutput is increased. This pressure increase is called 'boost'.. p, U7 d- l$ e& m0 Z& w& K
How does fitting a Dynamic Turbosystem effect the power of my7 L6 K7 A1 p- n8 R5 \
vehicle?' t) g9 X6 s9 u5 `& Z! o
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
- b& k. R! H9 b/ }6 R* maround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
, v7 t( r. ~8 d5 ~Turbo boost starts at approximately 750 R.P.M. and rises progressively to its( h9 R, q" Y8 u1 h0 W
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this+ Z4 s) ~3 C; B- T* w
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
8 y) m; Y$ s E1 r0 x8 ~; w1 wat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At" ]1 g" m" P3 f$ P0 O; e5 H
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
" F. r2 B! n6 Z, cthan the standard vehicle at the same R.P.M.
" [7 t- ?9 }9 V$ M/ NCan I fit a Dynamic Turbosystem myself and, if not, how long and
8 G) j; S+ M7 p5 r2 z, K7 ?what is the cost of having it fitted for me ?
( h6 k! S9 j: UWhile most competent mechanics could probably fit a Dynamic Turbosystem,
0 b) \; ~7 j, k3 Ctuning requires specialised knowledge. The lack of this knowledge could have
* B9 H. z4 z9 ~4 S# k6 M) M( Userious consequences. In addition, warranty can only be provided on Dynamic
9 ~. o2 g& i( V2 v* W/ V2 sTurbosystems which are installed by authorised facilities.
) |$ z; B4 b" a" p% N& |The cost of having the installation performed by Andrew at Berrima Diesel is" X3 F. x# Z3 l
only about 10% of the total purchase price. This provides a warranted, correctly1 l0 W& f+ \$ C/ ^2 {8 o
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be) g: }1 t D, U9 P2 v+ S
performed in one day.
% Q- I! J S1 v) T( @9 {- YWhat creates the most heat? Fuel or turbo boost?2 }0 P# h: q5 O0 j1 ^0 T
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
- Z0 `. i1 t9 Z+ S: y# Jrequiring a butterfly are vacuum operated governor pumps) to operate. The more air; c- `, K( c c4 h9 p x5 j# o6 [
the better. Add too much fuel to the equation and the exhaust gas temperature- u9 e! }8 g/ |
rises rapidly.
7 @. T$ N% r5 Q9 x% G- nWhat type of oil and how often should it be changed ?; ?9 g6 {; g+ v4 w
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
# X8 [. I4 }2 N. o& fengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
/ i8 C' _* v% _2 a% R3 s- K* [) b0 gChange oil at intervals recommended by the vehicle manufacturer.1 c9 Q# f' w6 ~5 g. R, m
How long does a turbo last ?1 p: [. y' t- m
On average, as long as the engine or longer with regular engine servicing and good/ n" o8 F: \) Y$ y2 O" W
quality engine oil.0 X/ W& j0 }. L2 J
What is a ‘dump’ valve or ‘blow-off‘ valve ?% n- n) u' ~. u6 \9 G" S
A valve which relieves boost-pressure between the compressor outlet and engine as
5 M* i! I/ k$ _: j( M8 Sthe throttle is closed (Only required on throttle valve controlled diesels which are
: H! @# Q8 g% z5 W7 Qrarely seen these days). These are commonly fitted to hotted up petrol cars so it. `) e3 j0 U ^, Y: ?6 C
sounds good changing gears among other reasons!
% ~5 f, ]4 n0 r3 bCan I fit a turbo from another 4WD ?' Y" f5 X& W3 o
No, virtually all turbocharger are different inside, even if they appear similar on the' B( O% @5 b5 c, u
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
; r& Y" P1 w) H( x& Y2 vspecification.+ x6 N0 M: L5 n
Should I leave my engine ‘ticking over’ before it is turned off ?
* {" {* N4 h, t/ |Not for normal every day driving, but still worthwhile if the engine has been under
% f6 f$ ~$ y! tload or raced before being turned off. e.g. Towing a caravan or after climbing a long
* M! o$ p# }/ T" S5 b1 F1 Vincline.
) c9 G0 e7 w7 i/ T8 k+ VWhy is it important to balance a turbocharger ?
/ y. {5 ~. k# ]Without highly accurate balancing, vibration will create a whining noise, reduce1 u1 ]4 k% `% Y* ?1 z
turbo bearing life and reduce turbo efficiency.% K: ]8 Y5 C: V0 [' Q! [1 @* d
How much boost does my turbo produce?
5 J% A; l) P( c/ UCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with, E' v8 d9 N+ T0 t. B/ V7 ?
Intercooler turbocharged engines running upwards of 13PSI.
3 `' F, z9 J/ [# F3 ?8 OHow many psi in one bar ?- P6 c9 }% T; B* m0 j
14.7 psi = 1 bar.
! t z+ n/ Q" ]/ g. fAre all actuators the same ?
. G3 t! x% S- L" `1 uNo, each has a different opening pressure and rate.
& L9 I" K F0 K4 r+ Z% R( ?) AOil in the turbo inlet pipe - Should I be concerned ?
, x1 h5 i$ u9 R/ z: m9 SA small amount of oil usually exists, drawn in from the engine's crankcase breather
: @" S# r7 ^( C7 Osystem. High engine wear will increase the amount of oil found, and will require
; v$ C5 |5 c; W+ q9 @# Hfurther engine tests (not turbo).+ w7 v! E8 _6 A: R) \$ s2 a
Should a turbo be serviced ?
0 f; B' J2 l" s' @" ~& k$ _No specific turbo servicing is required, but regular quality engine servicing is needed
. a7 ~" ~% e# @2 V9 W" x8 Qto reduce the chance of turbocharger problems.% e# M- Y, O T
What is a water-cooled turbo ?9 S3 Y- U: {: Y3 W# M3 Z' g
The central part of the turbo, housing the bearings, is surrounded by a water jacket
9 t' i9 ?( d6 ?3 Q: G: m5 Bthrough which the engine's water coolant is passed. This water continues to circulate* y7 t# ]. L9 K l
after the engine is turned off, cooling the turbo, and preventing heat soak.% y0 _ _1 c$ k% N
Do I need to up grade my exhaust ?4 w) n# G3 F; I1 W& |8 A5 |
Generally not. Our systems are designed to run utilising as much genuine component
" O: {8 F m$ z. o5 z' tas possible. Some systems on the market promote exhaust change as it is required by$ i$ A5 L; O) G" r( X) k
that particular turbo. Doing so usually picks up more noise than performance.
i5 f! t7 Z# b& s! P( Q/ vHow noisy should a turbo be ?
- a" R2 `1 M( E" y8 [% \+ tOnly an unbalanced, worn out or damaged turbo will produce any significant turbo" u- b. y) b; k+ x
noise.8 V4 V) |1 ]/ P u* N
What is an intercooler ?
+ K4 x7 x; |9 ?9 W' n! i6 ^* AA special type of radiator which cools air before it enters the engine. As a turbo o1 k& x, ]& g3 ^$ d
compresses air, the air heats up. Power can be increased if the air entering the engine2 |4 g' K; N, F0 m5 Y
is cooler. The cooler air is more dense meaning that more fuel can be injected for
2 {& s* W* P9 n2 v8 l" Amore power.
+ y* \3 k( s( }% U9 }5 g1 GWill my vehicle run ‘cooler’ with an intercooler ?% W- G; @# {3 l6 g1 }
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
k" |9 Y, M% ~* Y1 o; ^, {1 Yrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
7 U- M7 e3 ?% Z7 qair passes out of the Intercooler over the air conditioning condenser and finally the: I. H# }4 w$ ~# f8 F6 Z
radiator. The poor old radiator is left with scraps of extremely hot air and then is0 c, W0 M3 J* ^, a
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
8 v0 o+ Z- ~+ Gcan often be the catalyst for engine heat problems.* b. H% N% T" r0 T7 H
What will happen to my fuel consumption?
7 w! B& K! r, B. m: m# HMore power generally means more fuel. With a diesel turbo system, fuel consumption
0 u; h/ L8 S' K/ v- g" H' k- 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
