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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. + x4 I3 P7 p; O- [
8 ]9 B. W* X$ R8 x) I
. p2 R0 i7 a! e% B# r5 GTech Sheet* @/ v5 c/ I; I& K' r" H
‘Frequently Asked’
* o0 s r [# q9 h‘Turbo Questions’(In no particular order)
. i. z% N2 |2 qYour turbocharger is engineered to match the specific requirements of the engine it is) \: T$ t8 p E( Z
fitted to. Each is dependent on the other to maintain optimum performance. Don't7 |" ?2 X: X* Q) P* ^* `; {
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
, j% F8 S- B% Rturbo's requirements are similar to the engine’s. It is, therefore, essential that
+ g2 F# C0 A2 b& l8 Tscheduled servicing, using good quality oils and parts, is central to caring for your
, b! j0 {& v" }; \0 E0 T0 xturbo.3 B& |9 u7 }, a4 @( b* i d
In many instances Berrima Diesel receive turbochargers which have been$ f& }, x* Z, K0 d- ?2 f1 X4 R; Q8 f
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.3 `+ F' Y8 n3 D) v5 e8 c
Incorrect fault finding is often caused by a lack of product knowledge. Many
9 @: v1 ?3 m' P( C4 Z3 |contributory items around the engine bay can trick the unsuspecting into believing the
4 l7 u* I: z3 j/ F6 j! _* @4 C7 H+ kturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not! f5 ]9 A1 c# |
diagnosed before a replacement turbocharger is fitted, the problem still exists!' x0 t+ H0 V" g3 Y: v: b
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A. K6 j( F2 \9 H4 v# v
turbo can be killed in many ways.
' |! X7 {- V/ H9 ]8 F8 E+ O5 L4 DForeign object damage results in either the air intake "compressor wheel" or exhaust0 D: m; ]( C! y& A% ]# ~
"turbine" wheel being damaged. The former is often caused by someone accidentally. ~" q+ _% T% |0 ^8 d& D; S
leaving a nut or other foreign body in the air induction hoses. Please be extremely! A9 R+ b' C1 A4 {: u0 V* z' a
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
2 N8 S4 j) A3 k g/ X4 v. H, ?/ R, ~this may be caused by part of an engine component, such as a piece of valve, exiting7 K! e' Y2 m0 z {
the engine in rather a hurry! In both cases it results in severe turbocharger damage5 R/ \ x0 Y' B
instantly.
/ b& h% }2 Z8 g7 D" Y I2 L* L4 ^- ETurbochargers are simple in operation, but manufactured to precise tolerances as fine
/ P' {1 b5 l. P% b& t7 Tas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
! x, F6 f9 M2 S! M' ?turbocharger many times, including final assembly. The balancing methods and u) _6 `) S, c: ?
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
% w# T# V* Y6 }: j5 o8 P0 h3 Rtolerances required for today’s high speed turbos. It is now common for+ D, A$ S; Z1 k# K
turbochargers to spin up to 150,000 rpm +.$ w1 g+ {5 w: q& N5 d
That’s approximately 35 times faster than most diesel engines rev at the red line!( H) Q* D8 ^7 Q+ T5 z
Sophisticated machinery and highly trained factory staff ensure that the highest! T8 u9 | u9 F) {# D
standards are always maintained.
8 B5 t7 E2 w! K9 l: _ |9 IUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are3 z$ m* I; O) f* D% |2 @
to always allow the engine to warm-up fully, until the water temperature gauge" @+ C, }& ~. W4 d4 M
reaches normal, before full throttle is used. Try to plan the end of your journey4 v+ ] g1 a: v4 d0 r$ g- M, c
sympathetically. Don’t use full throttle or allow the engine to labour during the last
6 [" Q) D* B0 y4 B2 E; Zfew miles. This will prevent excessive heat build-up within the turbo when the engine; F7 I; r- E, J0 ~
is turned off. Also, when coming to a standstill, try to leave the engine idling for a( Q5 ], h( J, U' }4 j! T+ w
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
8 U" n& g( e' O& Oyour seat belt first and then turn off the engine. Never rev the engine just as the G; H! ]9 p6 H. L
ignition is turned off. Remember the turbo spins at a far greater speed then the5 f) n6 h2 q {( n& T$ J3 Q) Q
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
8 B- ~9 a$ N/ z% ]4 Ywithin a few seconds. In reality, none of the above traits will cause a turbocharger to
7 G& q- C, g- w9 g6 p# }fail immediately, but repeatedly over a long period, they could reduce the life of your
, }0 n7 t$ ~. A* oturbocharger./ R V; {% r- p4 `3 j" ]! x
If it becomes necessary to seek advice about a turbocharger or a turbo related
2 \! j/ l- K/ y: P0 d& \/ ~& H0 V5 lproblem, always rely on a professional. Berrima Diesel, together with DTS
) ~- a; t L% p) i) A& Zturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
0 `# ?( u, M: |* G& F: \- W& rof the most experienced turbo installation companies in the world. We can advise
e* `8 J* b) [2 a3 l& Ccustomers with turbocharged 4WD’s on a wide variety of questions and issues- h2 @, d7 i$ t( S! S, r! c5 p
relating to owning and running a turbo car.# i7 ]- |$ k+ H- r
It cannot be stressed too much how important it is, when purchasing turbocharger
$ f9 L ^8 \3 G5 W7 B1 ]4 O4 Xsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
5 _2 p& y _" M( R4 t% R+ Q+ Nso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
, x7 O) I0 j& Y- A8 f( iWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
4 d1 T7 m' @' s$ g8 lthat your short-term saving may turn out to be a long-term nightmare.6 ~+ S' ~, p3 |9 f2 `
What is 'Boost'?
/ E% j7 q6 M& k' i" YBoost is a term used to describe the increase in pressure, provided by the- L9 F, e$ s$ U& e7 x
turbocharger, to the volume of air, entering the engine. This pressure is expressed in2 ]( C, k7 ]6 Q( k, Q) l9 B
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
. k/ R; a8 |6 Q! _thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa3 {' Y, I- {9 h
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power+ @4 k* L0 f. k, S) P3 E+ ]
output is increased. This pressure increase is called 'boost'.6 H) p6 t/ \2 ~9 }
How does fitting a Dynamic Turbosystem effect the power of my
( i f9 m0 Y* E# R# R+ y! `vehicle?
0 A/ w4 a0 z2 B+ t, F$ b1 tModern 4WD diesel engines, typically produce peak torque (pulling power), at
. A( a2 |0 ]- Laround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.3 Z+ E- H9 a: p4 S" K7 V
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its" x, u* `. e8 H) R6 q
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
; N, }! |% h" a; Wpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,
- u# i" b7 G- ?2 vat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
' _" T; J7 s$ I, yno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater) |: N$ [1 d$ N/ J( z
than the standard vehicle at the same R.P.M.' R f8 ^5 E# B0 h
Can I fit a Dynamic Turbosystem myself and, if not, how long and
$ d8 K, l9 e/ z2 h8 s- O- m" I$ Swhat is the cost of having it fitted for me ?
6 M* a& E. l8 xWhile most competent mechanics could probably fit a Dynamic Turbosystem,
7 ~) \. M' S6 f+ I+ Z% _tuning requires specialised knowledge. The lack of this knowledge could have
/ n- h0 \! B: w3 G& P* W% T) U3 M4 Yserious consequences. In addition, warranty can only be provided on Dynamic
' K) c. n3 R0 y' S0 N+ k" eTurbosystems which are installed by authorised facilities.7 d, U) l/ F& D; L1 R* j0 R& L: X
The cost of having the installation performed by Andrew at Berrima Diesel is5 }. b7 D8 T, ]/ m
only about 10% of the total purchase price. This provides a warranted, correctly# m' F u6 S( @) ^4 z
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
/ ^ B7 h# p9 h9 {/ k6 \" X! uperformed in one day.0 P% A% I( a1 R+ W8 I
What creates the most heat? Fuel or turbo boost?' t% F! O. p# |. ]$ b- }; \
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
4 x1 P2 A( S- L, l- o; nrequiring a butterfly are vacuum operated governor pumps) to operate. The more air
* A! q4 o4 E5 `+ `' G+ fthe better. Add too much fuel to the equation and the exhaust gas temperature
# P. Y" X7 B- x. T1 drises rapidly.
, F; c- k1 s7 j+ ~8 E: W, s, i* J$ J$ cWhat type of oil and how often should it be changed ?5 B; S, d7 Q, D# Z, Z
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic( n+ f$ [, G5 O9 E4 k t
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
) a" H$ N" F, B7 b7 bChange oil at intervals recommended by the vehicle manufacturer.' P2 [, R: ^9 k% O( X& k! G
How long does a turbo last ?) k9 O# N1 k, H: m
On average, as long as the engine or longer with regular engine servicing and good) B3 T: `! D/ Y; Q& q. J* ]
quality engine oil.- `7 h7 z7 I3 o; c. n2 j
What is a ‘dump’ valve or ‘blow-off‘ valve ?1 u, B. y8 S$ j9 }5 d+ R
A valve which relieves boost-pressure between the compressor outlet and engine as
9 @! U0 p8 j7 ]the throttle is closed (Only required on throttle valve controlled diesels which are( l: g9 O, v3 @; e7 R- ~
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
* ?6 U. g$ \& O' ^% j' tsounds good changing gears among other reasons!! y: k' e! ^! f& o
Can I fit a turbo from another 4WD ?
8 E3 m+ S; r: pNo, virtually all turbocharger are different inside, even if they appear similar on the& F! g; ]9 j. t( R4 R& |" y: s6 W
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
3 f. o; S3 ] W. m& @. @specification.. ]+ J; ^, c' o3 @
Should I leave my engine ‘ticking over’ before it is turned off ?4 V8 N# [6 X8 B2 z: ~
Not for normal every day driving, but still worthwhile if the engine has been under
J& `; }/ V' [5 _" E, {load or raced before being turned off. e.g. Towing a caravan or after climbing a long
! E z' a$ O$ ?' O) b0 }incline.
; p; l7 [# h; k! u5 }. x2 I) iWhy is it important to balance a turbocharger ?
+ P. {0 p1 z. y3 LWithout highly accurate balancing, vibration will create a whining noise, reduce |5 j, O4 c/ [# j3 a6 f6 k# W
turbo bearing life and reduce turbo efficiency.
6 ?/ k( i Q; _2 t' BHow much boost does my turbo produce?( D+ S% S4 q" ]8 c: ~
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with6 Y7 M% U9 i7 W5 M1 [
Intercooler turbocharged engines running upwards of 13PSI.
2 V, A" c: ?' ]/ ?9 ~How many psi in one bar ?
' W0 ^: e# I3 U" [8 G14.7 psi = 1 bar.
( a# M& F+ T7 C8 A, {' ~8 BAre all actuators the same ?
/ l- d. f- T5 C& eNo, each has a different opening pressure and rate.
D( U9 b$ o* TOil in the turbo inlet pipe - Should I be concerned ?
+ m2 {7 @) `( }$ R9 t3 X% QA small amount of oil usually exists, drawn in from the engine's crankcase breather3 U5 r" `2 n& J; q5 h
system. High engine wear will increase the amount of oil found, and will require( ^# l. {& l8 K/ f
further engine tests (not turbo).2 A# Z( r2 g/ p% K3 T: e2 Y% |; C
Should a turbo be serviced ?) m: n( M+ C5 s5 R
No specific turbo servicing is required, but regular quality engine servicing is needed
- a( |8 ^6 R) c4 V! Tto reduce the chance of turbocharger problems.
8 O/ p3 H5 I& R2 H4 sWhat is a water-cooled turbo ?7 C7 n' `9 y2 d" T
The central part of the turbo, housing the bearings, is surrounded by a water jacket+ I; G( o) \$ W5 o# {
through which the engine's water coolant is passed. This water continues to circulate. s9 {' q+ V8 j! i
after the engine is turned off, cooling the turbo, and preventing heat soak.
/ d1 i* d _$ l5 S: o! bDo I need to up grade my exhaust ?8 P0 g3 n) J# l+ ?
Generally not. Our systems are designed to run utilising as much genuine component
, A' z. l6 |; H% ias possible. Some systems on the market promote exhaust change as it is required by
% _8 X( e& d9 D6 R' u) Z5 xthat particular turbo. Doing so usually picks up more noise than performance.2 @3 I6 @, @; N0 g" i
How noisy should a turbo be ?$ d# Z% {+ n+ s7 [( m4 J
Only an unbalanced, worn out or damaged turbo will produce any significant turbo3 u% o( w8 e+ k7 f( n L$ c
noise.! Z) m9 [% v/ R3 F4 C. H, x& t
What is an intercooler ?6 c# C0 ?8 T! C3 X" U4 h
A special type of radiator which cools air before it enters the engine. As a turbo
a9 N5 t1 t* a6 C. Lcompresses air, the air heats up. Power can be increased if the air entering the engine1 Z) b# v- c5 [8 q3 ], {
is cooler. The cooler air is more dense meaning that more fuel can be injected for( u* T7 M/ c% x+ ~$ K+ ~9 r
more power.: U/ n0 k, a3 y2 s0 Y% [
Will my vehicle run ‘cooler’ with an intercooler ?( N3 `8 a1 q* S6 l2 g4 A
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles7 G2 w I; c2 m& B9 W' {6 A0 B4 n
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
% W$ U. ~4 d) o# P# T3 j+ ~air passes out of the Intercooler over the air conditioning condenser and finally the
5 w; J6 b/ j- @6 S. _, \radiator. The poor old radiator is left with scraps of extremely hot air and then is& V+ h( c! {2 t0 M, L
expected to cool the engine. We don’t advise fitting them as hot Australian conditions4 G5 g$ g4 R @1 G0 i4 Y
can often be the catalyst for engine heat problems.
5 w& X/ B5 s3 HWhat will happen to my fuel consumption?& |9 W4 {0 Q) g2 w4 _
More power generally means more fuel. With a diesel turbo system, fuel consumption5 K! K% Z7 C0 z5 J
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
