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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. & O4 b: K3 h( Y+ h' Z' i1 b# k6 r
- i7 _1 j0 m) N* ?: \/ c& i
, k- W, j& G9 L; D& u( ~. [Tech Sheet9 |; y0 o3 J4 F0 I
‘Frequently Asked’' J( T- X# P8 U' S. B+ K
‘Turbo Questions’(In no particular order); W0 r$ K5 j9 E, h9 w9 V; {
Your turbocharger is engineered to match the specific requirements of the engine it is3 l' n3 Z, i. m
fitted to. Each is dependent on the other to maintain optimum performance. Don't8 }( s; G$ }3 s+ [) x; i! m+ F8 n
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
, A! C6 A+ U* ] L) [6 _turbo's requirements are similar to the engine’s. It is, therefore, essential that6 w3 q7 `* P4 M! J( Q" R
scheduled servicing, using good quality oils and parts, is central to caring for your0 \. i- G; B% Z
turbo.
! P: @, K) U- \7 u: @6 ~9 gIn many instances Berrima Diesel receive turbochargers which have been% `1 h/ I2 O: }3 l$ k7 N
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.! M8 D2 C' o/ q4 H: H$ x
Incorrect fault finding is often caused by a lack of product knowledge. Many
2 j) D% B, L$ y9 S- }contributory items around the engine bay can trick the unsuspecting into believing the
- }; N9 O5 r( Sturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not [3 ^5 c# w( z& C; C9 l
diagnosed before a replacement turbocharger is fitted, the problem still exists!
- k) U7 m9 `) p3 yWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
, q( n- E! @. x2 |& @1 P5 g9 Rturbo can be killed in many ways.) ?0 W$ W; U& C
Foreign object damage results in either the air intake "compressor wheel" or exhaust
8 k, q" p. `8 S( J [3 Z"turbine" wheel being damaged. The former is often caused by someone accidentally W+ R; Y8 m8 Y0 B
leaving a nut or other foreign body in the air induction hoses. Please be extremely$ R% x5 M0 a7 ]2 g( h
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,2 f4 d; f7 ~. {# {7 [ p/ y
this may be caused by part of an engine component, such as a piece of valve, exiting0 F! ^5 {8 M" t" \0 {* `2 W
the engine in rather a hurry! In both cases it results in severe turbocharger damage( g0 q& C, S: @0 ^1 e
instantly.
0 Y. `: |8 I: W( h [0 B2 T8 ~( _Turbochargers are simple in operation, but manufactured to precise tolerances as fine
: }: f c7 D7 r1 d' |5 y. c/ I9 gas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single2 ?) `! N- w! ]5 Q
turbocharger many times, including final assembly. The balancing methods and0 U" y" @5 H9 z' W& p
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine9 Y. N* b5 M& s
tolerances required for today’s high speed turbos. It is now common for
9 s/ x Y1 Z/ g3 bturbochargers to spin up to 150,000 rpm +.' d) v& w" a/ v/ R
That’s approximately 35 times faster than most diesel engines rev at the red line!# v0 N. r' p# Z# h
Sophisticated machinery and highly trained factory staff ensure that the highest1 I6 M/ x1 S+ [/ C3 u5 r* ]6 S% L
standards are always maintained.0 y7 _$ i7 k! Q" D3 O
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are* ^1 z7 t# E4 b* @6 M1 m, v3 O
to always allow the engine to warm-up fully, until the water temperature gauge: n1 m$ h& a i, K, f* a) q2 t3 \
reaches normal, before full throttle is used. Try to plan the end of your journey
4 @* z( D8 s! {6 d; ^sympathetically. Don’t use full throttle or allow the engine to labour during the last
6 R, D, M/ O$ D8 i; V0 [% H$ t! kfew miles. This will prevent excessive heat build-up within the turbo when the engine" Q8 \( R& I3 g5 }
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
" R3 \, \* x4 Q# l3 D) s7 xfew extra seconds to allow the heat to decrease. No need for a timer though, just undo4 d- y, T# d \5 K$ F
your seat belt first and then turn off the engine. Never rev the engine just as the
. J" H; a, d" k. x cignition is turned off. Remember the turbo spins at a far greater speed then the* G9 p! Z% U9 R3 Z- W1 p
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
# Z& M; p+ ?4 i8 M3 Ewithin a few seconds. In reality, none of the above traits will cause a turbocharger to% a3 {* }5 ~+ _9 h! t3 {
fail immediately, but repeatedly over a long period, they could reduce the life of your9 m( a! n5 i& d5 x
turbocharger.2 e. z4 Q: I0 |9 v9 O
If it becomes necessary to seek advice about a turbocharger or a turbo related( \- E8 n5 r5 V+ D, ~
problem, always rely on a professional. Berrima Diesel, together with DTS6 X2 G+ E: z* ^4 J0 u6 m* ^
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one8 s2 t5 m2 c, J: k0 T1 e. A4 H6 v7 ]
of the most experienced turbo installation companies in the world. We can advise7 O: [: p a( g7 {+ z& F
customers with turbocharged 4WD’s on a wide variety of questions and issues: Y0 E I+ o# H- K J3 |
relating to owning and running a turbo car.9 u8 \ i; V9 K
It cannot be stressed too much how important it is, when purchasing turbocharger6 I( V8 y8 C$ A1 \
system, always to choose the top brand name -Berrima Diesel. Consider this. As with" w2 B0 q4 Y$ P/ f8 O' A6 C
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.5 A) r [" W7 ?
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
' A, L0 W8 J' P; F" s* t. I. G- Mthat your short-term saving may turn out to be a long-term nightmare.
% X* _; r1 e. c. {4 q* m4 PWhat is 'Boost'?! W, |, P: \9 I W! r& Z5 y4 h
Boost is a term used to describe the increase in pressure, provided by the
2 @. i L6 U1 h* P3 c/ a, Aturbocharger, to the volume of air, entering the engine. This pressure is expressed in# _3 r, V2 q7 x; l4 F
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same9 [0 g7 o7 U1 F( ?. k# K1 E8 ^
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa$ @% R/ j0 \6 r, Y9 o8 M2 B% Z h- j
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power: `7 D, M( d, i7 P5 X& M+ `2 Q
output is increased. This pressure increase is called 'boost'.! u5 j7 Y3 W- x4 U/ E3 A" n+ [
How does fitting a Dynamic Turbosystem effect the power of my2 c3 j0 \' J( L3 J% W0 U4 u
vehicle?
$ Y; E' g4 z8 _, [* _Modern 4WD diesel engines, typically produce peak torque (pulling power), at
3 y( R& X! i5 r7 [around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
( C) a0 z; ]( j& x3 NTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
+ Y) x) p: g: s( N: a& Amaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this% i/ O/ R3 H- }- ]0 i
point, the percentage torque increase of a correctly tuned installation is approx. 40%,% @8 C6 X u! C' e( q
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
( U9 I% a+ c5 I, Y% a; Sno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
9 \1 v" m" w0 q3 r- u& p+ Z& bthan the standard vehicle at the same R.P.M.2 k `2 Q- B* s
Can I fit a Dynamic Turbosystem myself and, if not, how long and2 `2 r k* w. ]
what is the cost of having it fitted for me ?
1 M* _8 X- y8 [0 K" yWhile most competent mechanics could probably fit a Dynamic Turbosystem,: }/ V. g% g( N2 Q* J1 s: T
tuning requires specialised knowledge. The lack of this knowledge could have u6 d+ @8 }% k& ^" E& `' f! O8 v
serious consequences. In addition, warranty can only be provided on Dynamic0 z9 W) R2 S! W j
Turbosystems which are installed by authorised facilities.
$ u3 M, {* k x9 [7 _5 rThe cost of having the installation performed by Andrew at Berrima Diesel is
( J* y# L/ d" i0 G% Q& m5 uonly about 10% of the total purchase price. This provides a warranted, correctly; P2 L' f0 P! N( l
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be( i; E$ Y# l$ R' i
performed in one day.0 v+ a, J* M5 l
What creates the most heat? Fuel or turbo boost?$ Q; w# ?4 A" }9 z& w2 X: { e
Diesels do not need an air control (eg. manifold butterfly valve. The only ones8 v9 R: ]9 j& w' Q: ?3 u& Y
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
. t( N0 X$ C) e# ?4 {" Ythe better. Add too much fuel to the equation and the exhaust gas temperature
7 Z5 ^$ `: \/ Q# }9 xrises rapidly.% G, W$ n9 d* O; n
What type of oil and how often should it be changed ?
/ M8 o$ u9 v( h+ z! w$ GTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
( G- v, d% P3 ~" w' \: Y% gengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .. _2 A' p0 d) y- M; s! O) `+ M1 k
Change oil at intervals recommended by the vehicle manufacturer.
+ h; R B& t# V4 q. RHow long does a turbo last ?2 y K$ I8 U" Y, n7 Y$ j" O6 t) B
On average, as long as the engine or longer with regular engine servicing and good X& @, ~2 H) X6 o% H; D+ u" j, Y
quality engine oil.
. ^0 `3 V0 h% l& g2 `What is a ‘dump’ valve or ‘blow-off‘ valve ?
3 l+ L, d1 n- V" o2 \5 JA valve which relieves boost-pressure between the compressor outlet and engine as5 Z7 E7 \" W5 Y3 Z2 M3 G6 h, o2 r* R
the throttle is closed (Only required on throttle valve controlled diesels which are
^) p: t7 W, o Z! n1 erarely seen these days). These are commonly fitted to hotted up petrol cars so it
6 M( P* j0 ]. J# S/ }sounds good changing gears among other reasons!+ C# {/ q) x! \$ |( F# _ ^
Can I fit a turbo from another 4WD ?
2 E3 t, c8 t0 N, V y4 g& Y- vNo, virtually all turbocharger are different inside, even if they appear similar on the; H( y! r: M2 m. L0 ?2 `
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the4 E8 x6 O5 S4 t8 [+ y
specification.
/ R3 j. U5 r( F7 E$ B2 I" P! D; E7 p9 {Should I leave my engine ‘ticking over’ before it is turned off ?' I @4 ^# m, @
Not for normal every day driving, but still worthwhile if the engine has been under+ C: K) R% a/ _1 d7 z5 U
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
- s2 {$ x8 a+ I0 A) Q8 C: k( p4 `incline.' `3 `& h! K z& ^- Q
Why is it important to balance a turbocharger ?8 ]1 T$ V0 M( v2 V! w7 D1 H0 E9 M
Without highly accurate balancing, vibration will create a whining noise, reduce
) i2 F# z7 A% ~1 F, G, hturbo bearing life and reduce turbo efficiency.0 \: l% _" Y1 r2 V. A& X0 s4 Y
How much boost does my turbo produce?' r* v* f* {* T8 }3 X3 Q) y" i5 M
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
, S& N& z" I7 C2 T, D, S% B1 QIntercooler turbocharged engines running upwards of 13PSI.2 [7 R/ ?4 R$ c9 t+ U& u% ~0 |
How many psi in one bar ?
: E8 k( {9 Q i4 S14.7 psi = 1 bar.
: f4 H) t. I2 u1 C f3 w1 AAre all actuators the same ?* K1 U- V- s. K) Z: V% N5 w- R
No, each has a different opening pressure and rate.7 P+ r, A& z% N) b6 p- ^3 G- g
Oil in the turbo inlet pipe - Should I be concerned ?
6 n, W: Y- X* G2 |3 fA small amount of oil usually exists, drawn in from the engine's crankcase breather
{; E0 D6 l/ u% s( dsystem. High engine wear will increase the amount of oil found, and will require) u4 I% {& }8 S! k, i0 g
further engine tests (not turbo).
+ `* R- L" H! O Z" R8 Y5 k/ W3 jShould a turbo be serviced ?
$ ]( v0 R& y \5 v$ t* v ~3 iNo specific turbo servicing is required, but regular quality engine servicing is needed
. O/ A6 o" ~2 W g9 p. |, D; xto reduce the chance of turbocharger problems.
7 @* A; d. H% ]. M! A& gWhat is a water-cooled turbo ?
: B, }% _3 P7 _+ M1 h+ BThe central part of the turbo, housing the bearings, is surrounded by a water jacket% l( t3 i# h1 T2 T F
through which the engine's water coolant is passed. This water continues to circulate" r: a" q: N5 c& c
after the engine is turned off, cooling the turbo, and preventing heat soak.; A2 \9 x, P/ q% A& l( Y [
Do I need to up grade my exhaust ?
% W0 J( ` ]' ~Generally not. Our systems are designed to run utilising as much genuine component
% k7 O6 |/ f @4 jas possible. Some systems on the market promote exhaust change as it is required by
5 O8 ^. Z4 ~ F! Nthat particular turbo. Doing so usually picks up more noise than performance.0 s0 _+ F3 j: k% N/ _1 f
How noisy should a turbo be ?
8 t: I. V, f8 UOnly an unbalanced, worn out or damaged turbo will produce any significant turbo
3 f9 X& ^& G& unoise.' Z$ F& [3 m! l0 L
What is an intercooler ?5 x: W" G# c2 A# q6 G
A special type of radiator which cools air before it enters the engine. As a turbo
$ p( @9 K, d/ F- n% [compresses air, the air heats up. Power can be increased if the air entering the engine. H/ K" O# z. [2 G7 m- x& q6 F$ C
is cooler. The cooler air is more dense meaning that more fuel can be injected for' ^3 W& T& e2 `, C/ g
more power.' _; D A- e' B# G
Will my vehicle run ‘cooler’ with an intercooler ?& H4 q P" |) p: t% E$ n
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
G% j& Z' r0 l. hrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
% m5 C: H: V# R7 `4 d O' Uair passes out of the Intercooler over the air conditioning condenser and finally the
# B- w; C* w8 }* B2 o Xradiator. The poor old radiator is left with scraps of extremely hot air and then is
$ J4 d {2 f4 `2 [. D: `expected to cool the engine. We don’t advise fitting them as hot Australian conditions
8 h4 P" A+ o& m' {& tcan often be the catalyst for engine heat problems.4 \0 D+ M8 n( B
What will happen to my fuel consumption?1 w, o+ {6 t6 l+ i8 i/ X
More power generally means more fuel. With a diesel turbo system, fuel consumption. d1 ^- C- E) 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
