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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. " D! V* d( Q$ X- u
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Tech Sheet
# ^0 T e7 L' @8 w/ M. k0 `( ~‘Frequently Asked’
. [3 _* U6 b8 [/ _. ]9 B/ M‘Turbo Questions’(In no particular order); U( L4 S) I' h# R0 {* S' _, V
Your turbocharger is engineered to match the specific requirements of the engine it is' Y: e; n( n( K, r3 c% D* D
fitted to. Each is dependent on the other to maintain optimum performance. Don't" @% _4 E$ V3 I( o
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
( s# e: l8 i( U# B( g- Xturbo's requirements are similar to the engine’s. It is, therefore, essential that4 g J4 K, S% ^8 o0 C- b9 ^7 Q4 R
scheduled servicing, using good quality oils and parts, is central to caring for your; s1 P! O1 v" T6 [$ a; Z
turbo.6 a3 [! U4 I( E3 s* Q( i
In many instances Berrima Diesel receive turbochargers which have been
+ H/ N4 J* r7 d: A2 y) p* Vmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
: Y V8 a6 N! I0 B- n. n- N) IIncorrect fault finding is often caused by a lack of product knowledge. Many8 J. o; i5 S0 S: z0 _
contributory items around the engine bay can trick the unsuspecting into believing the
) G0 ?9 g+ [, R- lturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not& w+ B3 b/ d' j- c8 o
diagnosed before a replacement turbocharger is fitted, the problem still exists!
! O2 P6 ]6 ~7 gWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A/ R/ J$ P9 S- d" d
turbo can be killed in many ways.& H, o) |4 `4 Z8 u' C; u/ x3 K
Foreign object damage results in either the air intake "compressor wheel" or exhaust- ^6 X7 V0 i- X3 r, c
"turbine" wheel being damaged. The former is often caused by someone accidentally
. s8 P' U5 C) Z4 A! h jleaving a nut or other foreign body in the air induction hoses. Please be extremely
3 [% W: x3 N+ J% G) acareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,2 G6 b3 d# d( M1 j' v7 j
this may be caused by part of an engine component, such as a piece of valve, exiting- X/ ?. }$ t3 B
the engine in rather a hurry! In both cases it results in severe turbocharger damage
9 G3 z& B3 c7 d6 sinstantly.8 F/ `0 K, l! _9 v0 o B
Turbochargers are simple in operation, but manufactured to precise tolerances as fine4 a8 X/ K0 R8 Y
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single$ a" f, ^* C$ H5 b( r w% V
turbocharger many times, including final assembly. The balancing methods and
& v1 U8 u. v5 I9 ~procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
9 Y6 z8 n5 G- y7 M U0 f( Atolerances required for today’s high speed turbos. It is now common for' A- D2 h& O: f% a% ]
turbochargers to spin up to 150,000 rpm +.0 {1 U' i4 q2 y! @6 V
That’s approximately 35 times faster than most diesel engines rev at the red line!
2 D2 i- U4 L7 t# h' M1 M9 [Sophisticated machinery and highly trained factory staff ensure that the highest
) G5 Q* @! j4 A& ustandards are always maintained.
8 X2 B1 [7 l- r u# S/ }- d: pUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are& M8 K2 n, x. r
to always allow the engine to warm-up fully, until the water temperature gauge. T. f- z3 M B
reaches normal, before full throttle is used. Try to plan the end of your journey
" o6 ]0 r) o% c0 hsympathetically. Don’t use full throttle or allow the engine to labour during the last3 ]& s+ u/ f4 v8 R1 k% \
few miles. This will prevent excessive heat build-up within the turbo when the engine; ?$ g% ]8 F! A7 L; {: y
is turned off. Also, when coming to a standstill, try to leave the engine idling for a; G$ j: W! k% ~& p: U: L. A* {
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
7 O" ?5 V$ T3 R2 i M8 w* N* `* Dyour seat belt first and then turn off the engine. Never rev the engine just as the4 b- L+ l) N, A/ A8 x ?9 E
ignition is turned off. Remember the turbo spins at a far greater speed then the
# f& |( |% p$ Y* d9 s8 X' _engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
: c1 o; O, r( ^" r' V: e- pwithin a few seconds. In reality, none of the above traits will cause a turbocharger to, K* _5 \) p5 s8 M6 X& S& r1 a
fail immediately, but repeatedly over a long period, they could reduce the life of your4 `, O* |% g7 i( S; q
turbocharger.
7 H7 W9 _( J8 x) ^If it becomes necessary to seek advice about a turbocharger or a turbo related6 G) k8 O7 P, {) J7 ?
problem, always rely on a professional. Berrima Diesel, together with DTS
, `2 v$ Y4 E8 v* N1 ^7 Mturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one' q/ ?! a; y) A' l' T, z! X
of the most experienced turbo installation companies in the world. We can advise" g8 q7 C4 d! @! ^" E( E
customers with turbocharged 4WD’s on a wide variety of questions and issues1 P( X( m2 s8 ?4 X- z7 J
relating to owning and running a turbo car.
+ a2 _3 {6 u VIt cannot be stressed too much how important it is, when purchasing turbocharger
1 _6 Y( m7 ], D1 b7 [( _$ A4 M( {" Wsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
. l$ D+ I. a& k2 ?# ^& S' ` z6 d( m! \so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
2 Z- Y) Y) R; n: N( u1 \/ \& ZWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
8 h' X& \5 A R& j* P6 v: Pthat your short-term saving may turn out to be a long-term nightmare.
! A7 W' H* k" C! E. `1 Z$ lWhat is 'Boost'?+ |& O) B5 R8 L9 l
Boost is a term used to describe the increase in pressure, provided by the* M E; F% ^+ } D1 k0 \7 w
turbocharger, to the volume of air, entering the engine. This pressure is expressed in" X' }2 S- `% f5 I9 A
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same" j7 H T# ^1 v2 e
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa4 e2 b' c3 v; Q) ]
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power; J7 H3 ?% `% B: N4 q0 C7 O
output is increased. This pressure increase is called 'boost'.- k) |$ R( v0 L
How does fitting a Dynamic Turbosystem effect the power of my, B/ `$ k7 g/ O6 p# [6 `
vehicle?
) p) k6 g2 q& |' h5 {; FModern 4WD diesel engines, typically produce peak torque (pulling power), at4 j& N+ x+ D( J! r3 G
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.: Z' G! p& l5 V* g5 j% q( @7 b
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
* m7 ^: F `9 D3 _1 cmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this5 Y% k/ t; [! \" ]5 x; w& y: R9 d2 Y
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
7 o7 S7 R9 t3 t2 N! _/ aat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
; g7 n% k6 c8 g; Y2 ~& rno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater. k4 t- N* V- l R9 K9 S0 Q
than the standard vehicle at the same R.P.M.4 p- x6 x1 U( b0 F' {# T( d
Can I fit a Dynamic Turbosystem myself and, if not, how long and
) M2 e7 } \* a( a/ x; _0 m( [what is the cost of having it fitted for me ?
0 U# o, [: c4 k+ x* u% @5 _While most competent mechanics could probably fit a Dynamic Turbosystem,! P/ D( w& n* ~" q3 e
tuning requires specialised knowledge. The lack of this knowledge could have
4 e9 o0 ` J# D+ j% ^- R# P6 Iserious consequences. In addition, warranty can only be provided on Dynamic
, ^- X6 ?$ F6 z, R {Turbosystems which are installed by authorised facilities.9 N5 b \! {: [* _
The cost of having the installation performed by Andrew at Berrima Diesel is
9 {# p+ Z4 Q. V# j3 H) a$ Vonly about 10% of the total purchase price. This provides a warranted, correctly! F8 [0 ~) v) ]# W
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be* G% C9 y) L! D$ H, G& T
performed in one day.5 C, ]& }" M( t1 A
What creates the most heat? Fuel or turbo boost?) \! w1 h' n$ T# |7 ]! D' F9 y1 f
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
) G0 W9 r& U1 j& ]9 prequiring a butterfly are vacuum operated governor pumps) to operate. The more air
3 J" O. {6 v* z& m# T& E4 G- Wthe better. Add too much fuel to the equation and the exhaust gas temperature
' s; H: u. B2 w# p9 O$ v- urises rapidly.- A& `& Y- e# l% f# E$ z
What type of oil and how often should it be changed ?
+ b2 }' F. g( P. iTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic9 E% @( X* x6 W6 {
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .- Q/ e) N/ |5 x$ e9 J# t
Change oil at intervals recommended by the vehicle manufacturer.$ ^; d2 k/ o# g8 M: ~9 p
How long does a turbo last ?
# K& i, j9 R5 oOn average, as long as the engine or longer with regular engine servicing and good
0 n( v, B' B( g5 dquality engine oil.! F4 w" o; _) A( o
What is a ‘dump’ valve or ‘blow-off‘ valve ?
$ K7 N+ x. V) }' j' eA valve which relieves boost-pressure between the compressor outlet and engine as
' `$ U7 t+ C9 U( vthe throttle is closed (Only required on throttle valve controlled diesels which are
8 i3 e1 y" q, T9 Nrarely seen these days). These are commonly fitted to hotted up petrol cars so it
: ^: r V6 d3 t) C1 [sounds good changing gears among other reasons!
5 M8 X* g% w, t. O" Q8 eCan I fit a turbo from another 4WD ?# y/ A6 Z- R' U8 C( b9 K8 Z
No, virtually all turbocharger are different inside, even if they appear similar on the* V7 o# W$ M3 ?5 S% }
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
2 Q7 T/ \, y3 y# E' Xspecification.
. U& W* s2 Y, |( I4 e. h& CShould I leave my engine ‘ticking over’ before it is turned off ?
! {9 n- @1 L' c$ {$ xNot for normal every day driving, but still worthwhile if the engine has been under2 d' U% g9 A! q S& y
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
2 e- w. h/ L& j2 Y, i4 ^4 hincline.
1 W6 G# c9 f: b7 v! I7 qWhy is it important to balance a turbocharger ?
' f- n2 b$ n0 l8 ]Without highly accurate balancing, vibration will create a whining noise, reduce8 f; i% R( y* E9 s& R/ _3 B9 ~
turbo bearing life and reduce turbo efficiency.. i; N: p" `3 m S$ I" Q: q
How much boost does my turbo produce?
7 I0 N/ K3 Q9 U; c' x6 jCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with/ R1 K) X* n2 N, s) D4 ?
Intercooler turbocharged engines running upwards of 13PSI.& N0 b6 a5 L5 x8 ?# T9 g/ L/ R6 i
How many psi in one bar ?% h2 Z1 J3 G$ F2 M4 t
14.7 psi = 1 bar.
: [: d; X. R& I$ c3 YAre all actuators the same ?4 p; F, n/ J- x4 J7 |( s5 O
No, each has a different opening pressure and rate.
# V5 [7 m. v$ MOil in the turbo inlet pipe - Should I be concerned ?
) o7 p1 [; k, L- oA small amount of oil usually exists, drawn in from the engine's crankcase breather
# Z+ k3 F& P: P$ ^$ @system. High engine wear will increase the amount of oil found, and will require
5 r! a/ L) y2 n0 Lfurther engine tests (not turbo).
' k% ]- g, ?" c8 |' BShould a turbo be serviced ?: d% X; ]8 C9 t7 H& |9 ~( D& I, t
No specific turbo servicing is required, but regular quality engine servicing is needed! T" f( ~2 l1 G4 R* Q
to reduce the chance of turbocharger problems.
; x# ~( p( q+ ~4 N/ Q5 p3 u: sWhat is a water-cooled turbo ?
. ^/ c& v! a, r2 X, k# iThe central part of the turbo, housing the bearings, is surrounded by a water jacket
( ~4 t1 D2 P: ~4 hthrough which the engine's water coolant is passed. This water continues to circulate) ^; n" R& l) |* J
after the engine is turned off, cooling the turbo, and preventing heat soak.0 `+ G( X4 [- l
Do I need to up grade my exhaust ?
$ C& V" g( \) X( R1 z% FGenerally not. Our systems are designed to run utilising as much genuine component
) ^3 m( U% s) ~- Nas possible. Some systems on the market promote exhaust change as it is required by
; c6 c* f& C; i0 q! b% `that particular turbo. Doing so usually picks up more noise than performance.
/ }+ O( M4 K! m5 t1 h7 |. d4 [How noisy should a turbo be ?
5 T# Z r( F5 K [/ q0 wOnly an unbalanced, worn out or damaged turbo will produce any significant turbo$ `: d# r0 b5 n B% F2 n" _8 E
noise.
0 ?2 Q. V" j; l; B" r9 aWhat is an intercooler ?
9 y6 t" ^" [- M `A special type of radiator which cools air before it enters the engine. As a turbo$ ]* P- @8 o+ Z0 @
compresses air, the air heats up. Power can be increased if the air entering the engine
' a$ A7 b# K' mis cooler. The cooler air is more dense meaning that more fuel can be injected for0 W% i* g. O; m& W2 m$ E- r
more power.' T! y' P- G5 F M# t; C; N
Will my vehicle run ‘cooler’ with an intercooler ?
% t% D/ ^% r) m/ f+ {* L$ h# D' STheoretically, but not always the case! We commonly find Intercooled 4WD vehicles
+ a5 D( H* a. E+ o! R% lrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
# e0 y5 J/ p }$ h5 M. N Y- E" a! q0 Cair passes out of the Intercooler over the air conditioning condenser and finally the
0 s, Q$ A1 O" N5 p9 a7 b; ~radiator. The poor old radiator is left with scraps of extremely hot air and then is8 c( Y( |3 q2 l7 s& O& ]3 i
expected to cool the engine. We don’t advise fitting them as hot Australian conditions9 T% X4 t9 B7 p) _2 n; _
can often be the catalyst for engine heat problems.: ]& X# v) `' w8 |9 P7 j2 U' G
What will happen to my fuel consumption?, ^. v3 Y$ y) x7 _& f; A
More power generally means more fuel. With a diesel turbo system, fuel consumption
% w* a# Y5 P7 {- v Nstays 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
