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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. 0 f- i- ]; A: b8 T3 M( c
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/ L' d+ C8 |" |' v; wTech Sheet1 @4 a1 @: W. I8 o6 }; b
‘Frequently Asked’
/ r6 ]2 T9 g8 J1 y" V/ J$ K‘Turbo Questions’(In no particular order)
7 m q$ r, M9 k2 U) M% u: X) M5 eYour turbocharger is engineered to match the specific requirements of the engine it is4 x# t) R& g; D/ L5 p
fitted to. Each is dependent on the other to maintain optimum performance. Don't U+ g2 [% H$ o7 Q6 C* J
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The$ e# K1 Z+ N7 Q- j
turbo's requirements are similar to the engine’s. It is, therefore, essential that
4 Y9 B" o! `! z# {" x: Zscheduled servicing, using good quality oils and parts, is central to caring for your5 t2 \6 i7 y7 L) g* F
turbo." \2 z& k- }- r
In many instances Berrima Diesel receive turbochargers which have been
) l3 I$ v8 i- s; amisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
/ Z& t+ K) T0 |& kIncorrect fault finding is often caused by a lack of product knowledge. Many4 y" d1 t5 J: R* U# U
contributory items around the engine bay can trick the unsuspecting into believing the
6 d# l% e- |+ P1 u+ ?% x0 uturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
' X3 u3 E& k. j# D, Gdiagnosed before a replacement turbocharger is fitted, the problem still exists!
1 j" M2 D0 M1 L. g& Z* b- M1 PWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
- x% ?# g: [$ V0 s7 p `1 i8 Aturbo can be killed in many ways./ O) l+ c! q) F8 h
Foreign object damage results in either the air intake "compressor wheel" or exhaust0 ?/ s/ Q, o8 a9 _3 t
"turbine" wheel being damaged. The former is often caused by someone accidentally
9 g0 Z) U- I! yleaving a nut or other foreign body in the air induction hoses. Please be extremely1 Y3 E& v& ~4 C+ g) W
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
! `% L& s& G4 M$ p8 g' Ythis may be caused by part of an engine component, such as a piece of valve, exiting
9 J% n6 L8 f: E# X+ Y: {+ R* Y: athe engine in rather a hurry! In both cases it results in severe turbocharger damage: N0 h: O2 X3 b0 R1 y5 a) c8 C6 k
instantly./ ?# ~ s* a$ \+ e. c+ T
Turbochargers are simple in operation, but manufactured to precise tolerances as fine3 z" Y' z/ C$ Q2 I
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
" |* n; r# G, H: {/ A Kturbocharger many times, including final assembly. The balancing methods and% m* h4 |! p+ R
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine" c, @, D( ^: C, k
tolerances required for today’s high speed turbos. It is now common for
4 Z- ^! s4 g! {turbochargers to spin up to 150,000 rpm +.
7 L; j+ n6 j6 K4 DThat’s approximately 35 times faster than most diesel engines rev at the red line!# k- q( T2 H {1 M* R
Sophisticated machinery and highly trained factory staff ensure that the highest: C4 Y% v3 H |; u" ^* y
standards are always maintained.8 q0 _4 h z; S% e% {6 z5 J
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
! k7 j) j/ Z% i; d6 t4 [- cto always allow the engine to warm-up fully, until the water temperature gauge
6 ]9 @4 n& I$ Z+ _reaches normal, before full throttle is used. Try to plan the end of your journey2 y- v& |6 r. q8 ^( _6 ]; x
sympathetically. Don’t use full throttle or allow the engine to labour during the last
! t* h) W& H) s, _3 |9 pfew miles. This will prevent excessive heat build-up within the turbo when the engine; R) f# w* S$ h" X- w
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
4 v( m3 |% N. X( Pfew extra seconds to allow the heat to decrease. No need for a timer though, just undo7 t( T: M/ |" Y+ G( s- m% L
your seat belt first and then turn off the engine. Never rev the engine just as the; O8 E) L9 F; g: k0 H
ignition is turned off. Remember the turbo spins at a far greater speed then the2 u+ S7 o: n( m2 ?1 r0 b( [6 [
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases) U; S) m6 d3 x) {5 X
within a few seconds. In reality, none of the above traits will cause a turbocharger to3 D. o# f# ^- {2 ?
fail immediately, but repeatedly over a long period, they could reduce the life of your- @, l* B% k6 `$ a. A, e
turbocharger.
" s8 Z/ p5 B$ Y7 O/ ~* jIf it becomes necessary to seek advice about a turbocharger or a turbo related
( j+ W6 n& w4 H' ?: B5 f1 Tproblem, always rely on a professional. Berrima Diesel, together with DTS
$ U S- O7 Z2 q5 Nturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one: q8 W9 p* c* {" B# G3 K! B
of the most experienced turbo installation companies in the world. We can advise
! s5 r, {4 P+ n: i% u. E. o9 J: fcustomers with turbocharged 4WD’s on a wide variety of questions and issues: A! s; B( y# n; e6 }) N7 L* h
relating to owning and running a turbo car./ l7 d$ k/ v5 W: |. O
It cannot be stressed too much how important it is, when purchasing turbocharger
4 K' J, x4 U. [6 k/ C* t' E, ]system, always to choose the top brand name -Berrima Diesel. Consider this. As with: l; y$ s7 `1 u
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.6 X2 H2 o6 F( U8 j
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
" y" T1 z0 [' J) t8 s8 a: V1 }( Tthat your short-term saving may turn out to be a long-term nightmare.) F& X# o9 b. k" c0 r8 O3 y
What is 'Boost'?
# F) {' u8 ]% NBoost is a term used to describe the increase in pressure, provided by the' a, P0 y, S; y. L5 o% l( F
turbocharger, to the volume of air, entering the engine. This pressure is expressed in
9 m; A+ b% L c& na number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
# `- N# Q, j8 gthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa* u. z1 t3 G/ j* f3 [
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power G f+ i1 l. n3 A
output is increased. This pressure increase is called 'boost'.2 G5 @: r6 C. Y, F/ y* @& z! G
How does fitting a Dynamic Turbosystem effect the power of my
2 E7 D- s' R. s% D: g# \" [, R- Pvehicle?. n. v, ?2 i Y6 K
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
) j7 u: O6 \% E. Aaround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M." [+ a" k( _; Z/ `$ J, U( `1 q( L
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
9 @+ Y; B) p" a" rmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this$ F& ~1 }7 C. x' c7 {
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
% f- G1 x+ C+ u$ O0 dat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
$ S7 J) d2 X3 t0 Y! dno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater3 J0 v# ~8 T/ l6 Q
than the standard vehicle at the same R.P.M.
8 L8 j- B3 t3 K" [: ZCan I fit a Dynamic Turbosystem myself and, if not, how long and
" h4 `4 |9 t6 N7 Ywhat is the cost of having it fitted for me ?" ^& v- [' u/ y. z0 b' T7 N5 c) I
While most competent mechanics could probably fit a Dynamic Turbosystem," {3 H' ^) D$ {( V# Y
tuning requires specialised knowledge. The lack of this knowledge could have9 s* d; W, H, Y$ d- n8 P
serious consequences. In addition, warranty can only be provided on Dynamic
" J% |0 E/ N- uTurbosystems which are installed by authorised facilities.
% U& u( B" i1 q/ m3 L; xThe cost of having the installation performed by Andrew at Berrima Diesel is
* V" O& V1 I7 u" Z, P, c+ aonly about 10% of the total purchase price. This provides a warranted, correctly
n% `: `- x! [$ t9 D) V: Ptuned, "no hassle" installation for the customer. All diesel vehicle installation can be9 Q6 e7 ~' c' A0 x1 e# s
performed in one day." x/ B/ x0 M4 }( N0 h5 {
What creates the most heat? Fuel or turbo boost?
^. w& R4 @- B, }" lDiesels do not need an air control (eg. manifold butterfly valve. The only ones
$ ^# j8 n7 t* o) _2 xrequiring a butterfly are vacuum operated governor pumps) to operate. The more air
! D- |( z# b) Q7 m/ J* j e' w; ?the better. Add too much fuel to the equation and the exhaust gas temperature& D3 ~8 H7 v8 O6 D2 X
rises rapidly.
/ ~- c* U" ~# K6 `- r z; w/ QWhat type of oil and how often should it be changed ?
+ ?. D5 t3 s- o- w( oTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
8 ^; y1 S6 x/ c& rengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
# t' @4 O0 l+ {( u1 U/ g0 N0 Y% [Change oil at intervals recommended by the vehicle manufacturer.
% ]$ l# j" U# g: j( c0 C) m4 i. _7 FHow long does a turbo last ?
" D: S/ K5 O* T# e) SOn average, as long as the engine or longer with regular engine servicing and good
* W0 _! ~6 N; s$ Y0 @. L% B3 Mquality engine oil.
2 A& X/ |% G& O+ Z: f" J8 PWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
" R1 T( y- y) U' i% `2 zA valve which relieves boost-pressure between the compressor outlet and engine as
( C+ Q. |/ Y* b7 p& l2 mthe throttle is closed (Only required on throttle valve controlled diesels which are
8 V# v" ~+ c/ ?. |6 I4 j0 Xrarely seen these days). These are commonly fitted to hotted up petrol cars so it1 p# m6 m1 i8 C6 }
sounds good changing gears among other reasons!. y q% X T4 Z) c5 a6 J
Can I fit a turbo from another 4WD ?
# b4 M4 Y9 X1 cNo, virtually all turbocharger are different inside, even if they appear similar on the
4 |% @! g5 p! r Toutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
, w# i8 T# H' a3 o! q- _2 @/ }' jspecification.
$ ~9 R, h0 \% m2 W* J3 s+ wShould I leave my engine ‘ticking over’ before it is turned off ?5 z) o& a; I( w8 O5 Z8 N; h
Not for normal every day driving, but still worthwhile if the engine has been under
# }( i$ s* N& ?+ Q( z' W1 N6 mload or raced before being turned off. e.g. Towing a caravan or after climbing a long" g- V$ f9 l: Q/ g. E( J
incline." ^" s+ r( I9 ^2 N
Why is it important to balance a turbocharger ?' n4 F- N2 M1 J# {1 Y# K
Without highly accurate balancing, vibration will create a whining noise, reduce
, D3 v# Q7 g, j, s0 U0 ~: Y qturbo bearing life and reduce turbo efficiency.8 T T; K7 `, X( I$ G6 w4 Z
How much boost does my turbo produce?2 [5 H) S! i. S6 y( Y, Z
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with, ^5 S, i: ]8 S4 n, e3 @1 D
Intercooler turbocharged engines running upwards of 13PSI.* F5 q, U O& ]3 C/ d
How many psi in one bar ?3 Q; ?" h4 m# d$ o! ~. ^9 P/ O
14.7 psi = 1 bar.6 |4 @) C* g( @; F1 y7 N
Are all actuators the same ?
6 x; T3 M) k0 \# q! i& ZNo, each has a different opening pressure and rate.
7 s) C) t6 }* c" k2 a; t8 cOil in the turbo inlet pipe - Should I be concerned ?
! O1 p/ G8 r0 i& ?2 i: K$ r4 |( b" TA small amount of oil usually exists, drawn in from the engine's crankcase breather/ n2 ^+ k# q+ `
system. High engine wear will increase the amount of oil found, and will require) {7 v; `: v h: o: Y. D
further engine tests (not turbo).
2 c8 D4 f9 k1 x/ L& Y1 o+ `; yShould a turbo be serviced ?
* l T3 ?5 L& _4 }% ~% TNo specific turbo servicing is required, but regular quality engine servicing is needed7 v( J# W( t; Z% t2 M0 v4 L# M2 D
to reduce the chance of turbocharger problems.* K- h1 X1 P2 s& ?# d& H
What is a water-cooled turbo ?1 ^9 O6 G- K# |% G& W% k5 `4 K" [
The central part of the turbo, housing the bearings, is surrounded by a water jacket
x+ {9 V. l" Cthrough which the engine's water coolant is passed. This water continues to circulate: H+ D9 v0 v* |
after the engine is turned off, cooling the turbo, and preventing heat soak.
1 |1 C8 t- d) [: _Do I need to up grade my exhaust ?( Z# l2 v( h5 Z
Generally not. Our systems are designed to run utilising as much genuine component$ t7 d9 I3 U$ H% L. R: M
as possible. Some systems on the market promote exhaust change as it is required by4 L$ |8 D) E8 n! D
that particular turbo. Doing so usually picks up more noise than performance.1 L2 f) Y( F+ b. a
How noisy should a turbo be ?
u) S Y$ I8 z6 S9 `Only an unbalanced, worn out or damaged turbo will produce any significant turbo3 S. {8 a4 Q2 m& E! `
noise.
0 S: Z2 N# b I% }: `$ l$ V7 a; |What is an intercooler ?2 X% f( m2 t6 t, s2 u! W
A special type of radiator which cools air before it enters the engine. As a turbo
+ S+ {$ H( n* C3 S; [: |* {/ f$ Y1 tcompresses air, the air heats up. Power can be increased if the air entering the engine1 c$ ?! ]% M' Y
is cooler. The cooler air is more dense meaning that more fuel can be injected for
# d1 S/ I* N7 {, G3 l6 ?0 I; ^more power.' |! ^7 ]3 ? t0 w: E9 A# I* E
Will my vehicle run ‘cooler’ with an intercooler ?5 A! j* @& E7 j
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles/ I6 O8 g7 y7 h- Q" p$ o# k7 a H
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot4 A& S+ f3 M0 S8 \4 S" }
air passes out of the Intercooler over the air conditioning condenser and finally the
# R, O6 ]/ C- s$ u& p+ r0 E3 ~radiator. The poor old radiator is left with scraps of extremely hot air and then is
( M! Y2 m; m4 O! {2 Sexpected to cool the engine. We don’t advise fitting them as hot Australian conditions
' z- A/ F1 G2 @0 Qcan often be the catalyst for engine heat problems.# X, a3 g8 Y! I0 H5 r' U, q
What will happen to my fuel consumption?( S/ s2 ]8 l) F
More power generally means more fuel. With a diesel turbo system, fuel consumption
, ]* e/ M% f' b0 }8 \$ dstays 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
