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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; M5 [3 _ h: Y/ Q! ~- N& [2 F
‘Frequently Asked’
1 i4 _. \6 Q# ^5 y$ o‘Turbo Questions’(In no particular order)3 z6 ~$ A" q! g1 I
Your turbocharger is engineered to match the specific requirements of the engine it is
' {9 O( _' ^$ t: R, e- e3 b6 bfitted to. Each is dependent on the other to maintain optimum performance. Don't
* E. W. ]* }6 I, Z, Z7 Y8 }think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
1 o) y6 G5 t' \- wturbo's requirements are similar to the engine’s. It is, therefore, essential that5 }. t* a$ P ^3 C
scheduled servicing, using good quality oils and parts, is central to caring for your
) T; D& t, o! S. gturbo.4 r& ?6 w* ~1 @, Y: g' v% L7 P
In many instances Berrima Diesel receive turbochargers which have been
3 @5 n8 R9 J# C) n2 Cmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.* X$ w4 J9 K( ]$ ?- |+ s
Incorrect fault finding is often caused by a lack of product knowledge. Many! s* m6 X/ L) A9 i2 a! H# |- a; B) e
contributory items around the engine bay can trick the unsuspecting into believing the9 _( n0 w, Z( e0 X) x# ?) l
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not0 m2 {7 }' d6 ^0 o& u7 n
diagnosed before a replacement turbocharger is fitted, the problem still exists!$ A- y" \' h( R- y
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A; a2 F! u2 L# o9 x
turbo can be killed in many ways.( J T- P: a" i0 m
Foreign object damage results in either the air intake "compressor wheel" or exhaust
# O e6 b7 Y$ O"turbine" wheel being damaged. The former is often caused by someone accidentally
1 m0 ^" \* h l* z ?6 I6 _leaving a nut or other foreign body in the air induction hoses. Please be extremely- r; B; \! U/ A6 i/ f I
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
' }1 Z2 |* l p) c" ^0 cthis may be caused by part of an engine component, such as a piece of valve, exiting
/ f$ |5 I" a: v: c/ P6 h, ithe engine in rather a hurry! In both cases it results in severe turbocharger damage
8 D& s, l3 l! Dinstantly.
( \9 c: q: c" j& aTurbochargers are simple in operation, but manufactured to precise tolerances as fine8 `- L- i0 y7 Z W ~6 M+ j
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single: R2 ], ?$ M. v3 V. P
turbocharger many times, including final assembly. The balancing methods and/ i# u' r7 ]$ c5 O5 ~) I
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
/ N. F* q; B1 e0 e' {" y: E; ktolerances required for today’s high speed turbos. It is now common for9 E# q* X. _0 q6 y( B! A* R
turbochargers to spin up to 150,000 rpm +.
$ `: X! W3 J. V7 XThat’s approximately 35 times faster than most diesel engines rev at the red line!9 l$ D6 }2 P5 o* g' L z7 R* y
Sophisticated machinery and highly trained factory staff ensure that the highest
( `( E; K# H* Y; \) sstandards are always maintained.
1 Y1 O8 {5 V6 c, o- xUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are- n7 o4 {7 c) p# n& Z" \0 K
to always allow the engine to warm-up fully, until the water temperature gauge
# A* @1 M! Y! n4 v C7 _reaches normal, before full throttle is used. Try to plan the end of your journey: H' K6 w5 @5 e6 }" p. r
sympathetically. Don’t use full throttle or allow the engine to labour during the last( |3 |: c5 G" `5 s
few miles. This will prevent excessive heat build-up within the turbo when the engine2 h, \8 y* B! X1 C/ ~8 _
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
' O4 {% O8 Z7 Lfew extra seconds to allow the heat to decrease. No need for a timer though, just undo
) }1 w) v& R; W) {& Jyour seat belt first and then turn off the engine. Never rev the engine just as the
, e9 c, o. y5 k2 F) ~ignition is turned off. Remember the turbo spins at a far greater speed then the/ o/ c( x; r2 i3 e) c
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases- u" Y& w* g6 i4 c, z1 e4 c
within a few seconds. In reality, none of the above traits will cause a turbocharger to
: m" b8 d1 {+ H( s7 ifail immediately, but repeatedly over a long period, they could reduce the life of your! k/ ^- }1 C- ?8 t
turbocharger.! ]2 M2 l4 G! ^& O0 d% J6 u
If it becomes necessary to seek advice about a turbocharger or a turbo related
# N, a& [) r6 e0 [8 F: w3 e5 Xproblem, always rely on a professional. Berrima Diesel, together with DTS( Y9 X ]( s) e' S" F2 [
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
# o* b- d C/ \6 N0 ?of the most experienced turbo installation companies in the world. We can advise
% L$ M$ U% y2 d* p8 Y5 ~ tcustomers with turbocharged 4WD’s on a wide variety of questions and issues
7 ]; P. C! d8 t7 |' qrelating to owning and running a turbo car.
/ t2 R4 ?% E [% p0 c- u$ G) lIt cannot be stressed too much how important it is, when purchasing turbocharger$ ^/ X+ m$ A2 @0 M0 b
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
7 u* V2 L( J- ^+ dso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
8 v: ~/ K+ d8 T. [Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
9 F3 L" F. ?& L" cthat your short-term saving may turn out to be a long-term nightmare., Z* I+ N8 X3 X0 ^8 s6 g
What is 'Boost'?1 m3 h$ s) l" M7 S9 e6 b
Boost is a term used to describe the increase in pressure, provided by the9 Z; H" G# z3 y8 {. l' P
turbocharger, to the volume of air, entering the engine. This pressure is expressed in
: U. x. y! U6 d2 Z/ A) @9 ha number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
* c6 R- n1 Q7 Z, D: Lthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa# h% E% u0 c0 g" L- }9 ^" n
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
* n0 X; _4 t5 O: r, [# Y4 y9 Eoutput is increased. This pressure increase is called 'boost'.
' A' B D2 y5 G3 y+ S+ GHow does fitting a Dynamic Turbosystem effect the power of my& i/ |; S& j* ` g
vehicle?6 J0 a- h4 [# }& F& m# A M" @
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
" ]6 [3 U4 ~& l N; X1 x( m7 N3 }around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
" k5 N5 b' l7 n# }6 r% ZTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
) ^7 G' O9 |* `4 Y( dmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
9 G% {# N# V0 ~" w! A8 o; vpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,) ?/ N+ T9 k- ~9 L5 z( r8 a4 ?1 N
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At4 K7 L1 \6 R5 B: ~# r
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
4 E- f2 s- I" n3 V5 G$ K$ t+ mthan the standard vehicle at the same R.P.M.
0 |" K+ {* N- a9 [ X5 F) J0 `Can I fit a Dynamic Turbosystem myself and, if not, how long and
* F6 t$ n/ Y; f. I" P2 qwhat is the cost of having it fitted for me ?$ L0 x: o# I$ F H: d
While most competent mechanics could probably fit a Dynamic Turbosystem,/ v: K) m6 U. H: m m4 n, b( T
tuning requires specialised knowledge. The lack of this knowledge could have% C C( L6 y$ u9 u9 T I
serious consequences. In addition, warranty can only be provided on Dynamic
3 G6 f6 L. r X& c; KTurbosystems which are installed by authorised facilities.
2 D; O/ v4 H. a8 ^1 x3 M6 dThe cost of having the installation performed by Andrew at Berrima Diesel is
: S, K$ {6 M+ ~+ nonly about 10% of the total purchase price. This provides a warranted, correctly1 q3 U D* j& `9 r+ Y$ E. ~
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
! J. J5 K( J- ?4 R g2 Qperformed in one day.* u" J8 K# @' g2 W; ]" t' j
What creates the most heat? Fuel or turbo boost?$ Y! @$ [# H0 c1 E0 P
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
7 q% u" k0 e* f% I# o' }0 e. Orequiring a butterfly are vacuum operated governor pumps) to operate. The more air
- n& r+ u* _. e' P6 p8 E. tthe better. Add too much fuel to the equation and the exhaust gas temperature
9 D$ Y6 `+ m7 V' g- Y2 xrises rapidly.
2 ^3 T) H7 D4 d8 O& hWhat type of oil and how often should it be changed ?
7 I' l y! C: E* l5 u3 b' ]1 sTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic& d1 [+ j1 V0 H
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra ./ L1 P5 T1 f9 @/ l2 x
Change oil at intervals recommended by the vehicle manufacturer.
* q0 y+ A& }' G) D- H1 ?How long does a turbo last ?2 `' ^" ^# a: w0 j+ P0 Z
On average, as long as the engine or longer with regular engine servicing and good2 }, O$ F: g/ ~: d, w$ `
quality engine oil. k( G8 w9 @% F' @, e4 k7 F+ \
What is a ‘dump’ valve or ‘blow-off‘ valve ?2 G; I9 k" Y# V3 {
A valve which relieves boost-pressure between the compressor outlet and engine as. Q3 _6 k" E1 A, |7 X3 A9 z
the throttle is closed (Only required on throttle valve controlled diesels which are b& z/ b5 x }+ }9 \& Y4 O
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
* x8 C1 x, o* S6 E3 @& C& [: s( Fsounds good changing gears among other reasons!
$ e5 O& z8 m5 m& Y. v% dCan I fit a turbo from another 4WD ? ]* ]: \* U& c [
No, virtually all turbocharger are different inside, even if they appear similar on the [4 q+ g. E1 ]: {
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the+ e% j) a2 t7 t
specification.
" _3 `, n; N; D; dShould I leave my engine ‘ticking over’ before it is turned off ?
' f' Y8 z0 K: ~% DNot for normal every day driving, but still worthwhile if the engine has been under0 y7 O* N$ H- U/ ~
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
: x( i) }' o3 _: ?6 v7 uincline.
# M9 O4 P+ f4 j) L- KWhy is it important to balance a turbocharger ?/ o' M3 n" x p9 f; t
Without highly accurate balancing, vibration will create a whining noise, reduce
- @5 I! } Y7 x& g% c! f2 Vturbo bearing life and reduce turbo efficiency.
% L! u$ x8 b% o$ bHow much boost does my turbo produce?( W& M7 [: ]0 Y- ^: v7 ?1 ?+ Z
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
( I& e a& ?$ K& o0 XIntercooler turbocharged engines running upwards of 13PSI.# z @, w4 ~8 D
How many psi in one bar ?
7 h/ i9 F: d; q14.7 psi = 1 bar.
7 Y" P4 B, d- N2 V6 _Are all actuators the same ?
( v* @* t* ?3 v. C2 Y }; ^0 o5 UNo, each has a different opening pressure and rate.1 U( a s" o# X: t# v
Oil in the turbo inlet pipe - Should I be concerned ?+ T+ l2 I& @. B$ }& P0 p. y
A small amount of oil usually exists, drawn in from the engine's crankcase breather
* `0 W0 ^6 {' t/ {$ [# C% Isystem. High engine wear will increase the amount of oil found, and will require
! ?* T& N2 r$ ~; T$ Yfurther engine tests (not turbo)., |) `# [% b, F- J# {
Should a turbo be serviced ?
3 C0 h, \, V9 U# O( o/ CNo specific turbo servicing is required, but regular quality engine servicing is needed
, g0 ?2 q8 F. ?. m) U1 w7 H; O- Nto reduce the chance of turbocharger problems.
, I8 Z4 x2 \2 |' g1 M4 q) TWhat is a water-cooled turbo ?2 B1 }) x0 W, V- \ _) F8 @2 O5 R- n
The central part of the turbo, housing the bearings, is surrounded by a water jacket; T& o/ U! x/ D& z, o7 v8 E. Q" C4 T
through which the engine's water coolant is passed. This water continues to circulate7 [: V7 J. m/ B# h
after the engine is turned off, cooling the turbo, and preventing heat soak.
+ z" P0 [; g3 H+ {$ a# [Do I need to up grade my exhaust ?
P$ `& [" {8 t5 Q6 c( RGenerally not. Our systems are designed to run utilising as much genuine component
3 R8 u# p" d; c# J2 das possible. Some systems on the market promote exhaust change as it is required by+ X) f: P7 N: o% F- n) M
that particular turbo. Doing so usually picks up more noise than performance.
3 j0 l0 ?2 H4 N1 uHow noisy should a turbo be ?
: k" {; F, i: c( D% ~& [' mOnly an unbalanced, worn out or damaged turbo will produce any significant turbo) A, s/ z1 j+ a- u" N! {
noise.$ G, E+ J5 o) m& f' X$ X* M' h
What is an intercooler ?7 }# L. }8 U7 q$ ?
A special type of radiator which cools air before it enters the engine. As a turbo- B3 G2 ~0 L0 Y5 r
compresses air, the air heats up. Power can be increased if the air entering the engine
4 q: X: u; |$ }* U( N+ X5 m- D9 Dis cooler. The cooler air is more dense meaning that more fuel can be injected for
3 F3 w1 {7 Z$ v$ ~) u# a1 emore power.# t$ ]' w& h2 K G) x
Will my vehicle run ‘cooler’ with an intercooler ?
& K4 S" g; \1 Y( A' z1 g9 fTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles2 m; K$ P' ~2 W1 v: r6 F8 ~$ |, ]1 H
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot& ]+ g% H$ @$ l
air passes out of the Intercooler over the air conditioning condenser and finally the! J/ T* C# H( G0 O
radiator. The poor old radiator is left with scraps of extremely hot air and then is2 x8 j, m# ?' i. E( p, b! Z( m, d
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
* x( _# O: Q2 k/ e/ p: bcan often be the catalyst for engine heat problems., j" d3 }5 k9 x& q
What will happen to my fuel consumption?, e* t1 N7 y+ k
More power generally means more fuel. With a diesel turbo system, fuel consumption
; a1 U6 H, I9 W# m7 Istays 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
