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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
' K$ W( g, z3 U‘Frequently Asked’2 x" C0 F* t0 Y- \ r9 M
‘Turbo Questions’(In no particular order)! {' \ f; c1 c
Your turbocharger is engineered to match the specific requirements of the engine it is( w8 Q* Y/ j0 @" }2 I! V, z
fitted to. Each is dependent on the other to maintain optimum performance. Don't i) f9 c/ h, K1 ~) A
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The7 E& U& d" `: T/ W
turbo's requirements are similar to the engine’s. It is, therefore, essential that" B& u/ ^* J. c C4 F
scheduled servicing, using good quality oils and parts, is central to caring for your5 P( y/ W- B; B: S* I
turbo.
/ y! G% q, O7 p9 S+ `) e" ^; ?8 ?6 MIn many instances Berrima Diesel receive turbochargers which have been2 p6 [# L# J. J2 ?5 A9 ^0 \" |
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.. R; r0 X' k: C5 w- j/ v
Incorrect fault finding is often caused by a lack of product knowledge. Many
5 {: l: o/ J- S8 S: ncontributory items around the engine bay can trick the unsuspecting into believing the
8 X( T* B# Z. ^ ~' B5 Q3 _turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
+ m6 Y9 w/ P8 a* k. xdiagnosed before a replacement turbocharger is fitted, the problem still exists!
( K' e# w3 a; K, aWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
( b& y: u1 c: t# Q( Y' y% Zturbo can be killed in many ways.. l: l% c8 k! `6 J& s
Foreign object damage results in either the air intake "compressor wheel" or exhaust
& h7 L3 k$ ?# g" b" ]"turbine" wheel being damaged. The former is often caused by someone accidentally( l* O5 X# h4 R" I/ s: S
leaving a nut or other foreign body in the air induction hoses. Please be extremely3 [* r' u6 w0 C# W& g/ M6 Q3 D% Q
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
- l0 w1 o4 G! r5 g7 E6 Ythis may be caused by part of an engine component, such as a piece of valve, exiting
3 }4 o/ m% B$ D; f8 ]7 v! k6 lthe engine in rather a hurry! In both cases it results in severe turbocharger damage
! U; u$ T: v7 hinstantly.. C% z! m4 C! \# F: b" C
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
+ I5 ]1 W1 X, u: I/ }9 c' V6 Uas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
* L% B; Q7 `! |5 `3 s- Gturbocharger many times, including final assembly. The balancing methods and
9 r1 ^1 w/ o' I2 W2 K: @ Cprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine$ R7 D; t, B/ W! ~) n
tolerances required for today’s high speed turbos. It is now common for
( T, Z5 O k. `turbochargers to spin up to 150,000 rpm +.; [& c2 T- L, x! D0 `9 n
That’s approximately 35 times faster than most diesel engines rev at the red line!' C6 W4 L8 Q2 z) ~
Sophisticated machinery and highly trained factory staff ensure that the highest, E7 l M: i2 W1 O' [
standards are always maintained.
$ |$ e) D9 ?1 I9 l/ GUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are8 E, D/ r! X5 n! q2 K# ]% W* V
to always allow the engine to warm-up fully, until the water temperature gauge) |* t+ d5 z$ \% G+ |' m
reaches normal, before full throttle is used. Try to plan the end of your journey
2 S+ X; A& d+ jsympathetically. Don’t use full throttle or allow the engine to labour during the last
/ p2 o) P& u; z, H/ n$ Efew miles. This will prevent excessive heat build-up within the turbo when the engine( b: B: r6 C$ D: n' R `
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
% h, _ |$ S0 J8 b: X$ T& ffew extra seconds to allow the heat to decrease. No need for a timer though, just undo
) ` S: ~8 F8 ?' K3 i% n( d! Myour seat belt first and then turn off the engine. Never rev the engine just as the
$ ^* P, r4 x5 Bignition is turned off. Remember the turbo spins at a far greater speed then the
% D: l3 P2 o/ Z/ r& lengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases# N2 Y% A% O* Y- V g) d8 B
within a few seconds. In reality, none of the above traits will cause a turbocharger to! p6 ~0 x$ _8 X' M4 k, v# ^. [
fail immediately, but repeatedly over a long period, they could reduce the life of your. M8 G7 R" b |8 n
turbocharger.& i3 W+ [5 i0 ^ F3 `
If it becomes necessary to seek advice about a turbocharger or a turbo related
( a. m' A/ Q1 ?; |problem, always rely on a professional. Berrima Diesel, together with DTS
% w2 q1 c. e9 y8 P9 oturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
: F( e- g8 j& _2 @of the most experienced turbo installation companies in the world. We can advise
2 k! J- ^# g( \* Hcustomers with turbocharged 4WD’s on a wide variety of questions and issues+ T n- y4 G, i# D
relating to owning and running a turbo car.
# k4 Y$ `% i7 v/ ^0 t5 uIt cannot be stressed too much how important it is, when purchasing turbocharger
, ]' f1 [$ t" b+ u3 fsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
/ L# r& M. ], q0 Tso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
( [3 w; V$ O: T1 s h# Y1 EWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
7 n. O. U0 Z* P0 `2 r, E. Jthat your short-term saving may turn out to be a long-term nightmare.
8 F2 J6 F. X' c" fWhat is 'Boost'?
- ~$ }; e: o I i5 t0 m" nBoost is a term used to describe the increase in pressure, provided by the
9 ?* ~3 p- P$ r& kturbocharger, to the volume of air, entering the engine. This pressure is expressed in+ _9 r- t" T( G/ `2 Y2 _9 R! f$ U
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same% ?* n; j. C/ D5 @+ E
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa; p8 J& h) W/ T. B
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power d& K$ g4 a4 d; C/ _, x u
output is increased. This pressure increase is called 'boost'.
, w$ c4 R/ S! R% f. R4 UHow does fitting a Dynamic Turbosystem effect the power of my# m0 l, C# i! T! Q9 e7 T# f
vehicle?
# q& V) F( ^( a- z/ g1 E) \3 \Modern 4WD diesel engines, typically produce peak torque (pulling power), at
' [* r% n9 h5 s4 Paround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.2 a: s' _$ Z2 Q* ]' U" J: T& s" k
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
+ Y" ^! j- V. z: t O' imaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
' e6 [+ x" R; a1 n {point, the percentage torque increase of a correctly tuned installation is approx. 40%,
7 W; P! V9 o: P4 M; \: yat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At0 R/ }2 h, r' F2 G3 k
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater0 V9 ~- O( N5 a4 t
than the standard vehicle at the same R.P.M.
& G3 [) F& L6 Q( G: m+ WCan I fit a Dynamic Turbosystem myself and, if not, how long and
$ E5 G, z M1 M. k W9 Dwhat is the cost of having it fitted for me ?/ y- U1 X, z8 j6 c% F
While most competent mechanics could probably fit a Dynamic Turbosystem,
* j- f$ A. j& f" y) gtuning requires specialised knowledge. The lack of this knowledge could have
, p' E* M, T5 v# Yserious consequences. In addition, warranty can only be provided on Dynamic4 K( r7 G5 D; n/ R3 _
Turbosystems which are installed by authorised facilities.
9 R p% M& D7 O C& HThe cost of having the installation performed by Andrew at Berrima Diesel is
* v' x% n$ K# Y' [. v$ Lonly about 10% of the total purchase price. This provides a warranted, correctly
$ N0 K* Y, F3 V$ htuned, "no hassle" installation for the customer. All diesel vehicle installation can be1 v* F# C$ b# g9 A+ x3 \4 T
performed in one day.
9 y9 x- w9 G, z. Z* R: k0 KWhat creates the most heat? Fuel or turbo boost?* P5 N4 I& u" W% X) ?
Diesels do not need an air control (eg. manifold butterfly valve. The only ones# {9 |7 f! f: K/ J" r
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
1 ]3 T% T( Y8 V5 [1 Uthe better. Add too much fuel to the equation and the exhaust gas temperature
, C1 {5 q' r! orises rapidly.
9 K1 `/ w) y, V* @1 q& e/ {- }* t, nWhat type of oil and how often should it be changed ?7 L" r o8 i9 I7 K, n- n
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic4 c+ t+ u) O, {( N( {5 |5 c
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .0 V. t- S2 @- O" @# g0 R/ S) `
Change oil at intervals recommended by the vehicle manufacturer.
) E/ M& \6 o. r# F( U7 VHow long does a turbo last ?
; m, W% e: g* { H7 iOn average, as long as the engine or longer with regular engine servicing and good1 Q6 {' S5 @1 S. _4 r" r% C
quality engine oil.$ b0 i5 b6 L5 s
What is a ‘dump’ valve or ‘blow-off‘ valve ?& a5 A! l2 P0 m7 }# q$ z! K& A
A valve which relieves boost-pressure between the compressor outlet and engine as* J; F0 Y# H5 H4 b7 {( P0 Y
the throttle is closed (Only required on throttle valve controlled diesels which are& |1 F* U% O7 N3 i2 ]2 p: R
rarely seen these days). These are commonly fitted to hotted up petrol cars so it; o" b/ O5 s9 x
sounds good changing gears among other reasons!
* Q% V: P: B# [3 ]1 Q) L1 P' XCan I fit a turbo from another 4WD ?/ t$ p' k" @! W& N$ ]4 I8 K
No, virtually all turbocharger are different inside, even if they appear similar on the& R- Q$ ^* r$ B# x; V; X0 d3 ~
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
( y: p# ~3 \5 M, C( m" s$ A# U: ^specification.! O1 ^; \! @! N! V+ O
Should I leave my engine ‘ticking over’ before it is turned off ? Q1 Y6 a: o, m5 @. Z6 d
Not for normal every day driving, but still worthwhile if the engine has been under9 ?: J, z6 @) s: T
load or raced before being turned off. e.g. Towing a caravan or after climbing a long+ t6 n2 N. O! Q& V; A: f
incline.
& r8 w2 c9 _5 D2 S2 @, bWhy is it important to balance a turbocharger ?# _* G4 S( f; G9 y8 D' v/ t; n, c
Without highly accurate balancing, vibration will create a whining noise, reduce4 ^ a$ \8 j5 D
turbo bearing life and reduce turbo efficiency.
0 g! z4 g2 y8 s- ] P/ q3 VHow much boost does my turbo produce?2 `( U$ a4 R! z5 T9 ?
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
! y& F ^2 r5 b U, c! M/ SIntercooler turbocharged engines running upwards of 13PSI.
' H4 ^ L' i' Y4 ?How many psi in one bar ?% t$ x( J3 N8 K% y+ l
14.7 psi = 1 bar.' J' b: M4 m3 M7 N( n
Are all actuators the same ?
1 b W$ {" l% F; s3 iNo, each has a different opening pressure and rate.
# C; T' R# f$ X0 M% BOil in the turbo inlet pipe - Should I be concerned ?
1 J1 N- Y& Y. OA small amount of oil usually exists, drawn in from the engine's crankcase breather
' D' Y) } Z/ B, H" Y J# xsystem. High engine wear will increase the amount of oil found, and will require- j P& P1 D y8 t' }7 h7 p$ u2 {
further engine tests (not turbo).
7 v7 n" p2 W6 |1 W/ L1 F5 o4 D& HShould a turbo be serviced ?4 H8 \( ?0 P% Z2 R X I
No specific turbo servicing is required, but regular quality engine servicing is needed w8 _% @0 C% v: Z1 i
to reduce the chance of turbocharger problems.8 S5 M! o& ^4 e! v8 K
What is a water-cooled turbo ?
$ i, O& X6 {8 c" ]6 O) XThe central part of the turbo, housing the bearings, is surrounded by a water jacket/ I; |( s$ O* D% v7 L8 g) o+ G: p
through which the engine's water coolant is passed. This water continues to circulate, ^* W4 X- e: l! R, V! f. ?# {- S
after the engine is turned off, cooling the turbo, and preventing heat soak.
0 E7 w# h0 a" f! K6 d D; WDo I need to up grade my exhaust ?
4 C% `$ }) W9 R$ r4 t, OGenerally not. Our systems are designed to run utilising as much genuine component
6 n; ]3 v7 {7 c! fas possible. Some systems on the market promote exhaust change as it is required by* }& z0 [4 X1 p' [6 w% V1 o
that particular turbo. Doing so usually picks up more noise than performance.( \% s6 k5 q! U# l* l# R0 m, Y
How noisy should a turbo be ?
2 F8 ~4 T8 x+ x0 Y9 I4 w! g; xOnly an unbalanced, worn out or damaged turbo will produce any significant turbo4 K2 k7 v) O) A
noise.
% ?/ W! A6 \! t9 s* V7 G. oWhat is an intercooler ?
8 T! s. M. U/ }" J5 c& e$ _% gA special type of radiator which cools air before it enters the engine. As a turbo! i6 j! T5 H/ y- C! [* f9 M
compresses air, the air heats up. Power can be increased if the air entering the engine
: y6 q9 B, c! D: x' Cis cooler. The cooler air is more dense meaning that more fuel can be injected for
, X L' u2 e0 J; Z$ [" x' Kmore power.5 a: O0 E6 @5 R$ d: t7 X5 E
Will my vehicle run ‘cooler’ with an intercooler ?
$ A1 q; n" ?" a- HTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles0 b4 ~% _1 R$ Y! X6 k( w) e
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot0 b0 I/ a( J4 i* o/ E
air passes out of the Intercooler over the air conditioning condenser and finally the
) \9 M, P5 r _8 V X, |radiator. The poor old radiator is left with scraps of extremely hot air and then is' w2 c' A4 g5 g, J2 H! ?9 b* }
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
& V% `1 v" T+ ~4 \. o% X9 ^6 mcan often be the catalyst for engine heat problems.
8 p* E2 w; p* @6 f4 w/ S! eWhat will happen to my fuel consumption?6 X9 Z# {, p0 D: I7 e* G* {
More power generally means more fuel. With a diesel turbo system, fuel consumption, f: V0 q0 M ~
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
