 鲜花( 0)  鸡蛋( 0)
|
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. . x# I" ]$ V% e/ e
& Q$ Y+ f5 o4 ~! o, X3 E% `
# C& T# C6 t ?0 ~6 K
Tech Sheet" {0 r+ L! E2 f9 O, S, b5 K
‘Frequently Asked’8 Z0 t& @* D0 g
‘Turbo Questions’(In no particular order); D; {8 ?" e7 l' Y% `8 A: u
Your turbocharger is engineered to match the specific requirements of the engine it is
( k) f; b- D; y( K% nfitted to. Each is dependent on the other to maintain optimum performance. Don't
5 H, D0 t& g/ A- `think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The* N. `' m5 |( H
turbo's requirements are similar to the engine’s. It is, therefore, essential that; a8 L4 D& M9 U: u; S
scheduled servicing, using good quality oils and parts, is central to caring for your$ R2 E* ~# b9 t& N6 `# g) e
turbo.7 x9 I* H& i, }
In many instances Berrima Diesel receive turbochargers which have been
* l' f& g( E0 v- O: I9 q# _. jmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
4 K) w+ t. R4 {2 eIncorrect fault finding is often caused by a lack of product knowledge. Many
, ~ B2 T |. w0 f: {& Gcontributory items around the engine bay can trick the unsuspecting into believing the
6 w0 J/ \8 M0 G+ G: hturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not. @2 D' H& d* ?5 i5 I
diagnosed before a replacement turbocharger is fitted, the problem still exists!
' B$ A2 [/ g- z& s% U. a0 |) x& a( kWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A5 I$ K1 P2 u5 D6 X3 i( J0 ]/ Q
turbo can be killed in many ways.
* z8 `3 E8 l% v: T; sForeign object damage results in either the air intake "compressor wheel" or exhaust
3 C6 M* E6 ?/ A"turbine" wheel being damaged. The former is often caused by someone accidentally* `3 g q" I9 D6 d: U9 Y. F3 D5 r
leaving a nut or other foreign body in the air induction hoses. Please be extremely
% Z, A3 w. q" z& ~% xcareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
$ y- |$ J0 M6 h' E r; D& T6 uthis may be caused by part of an engine component, such as a piece of valve, exiting
$ C- Z6 @' e. \" q9 v, f- Qthe engine in rather a hurry! In both cases it results in severe turbocharger damage" v7 w5 R/ z& d4 L+ R
instantly.
% t9 O, g+ A$ |Turbochargers are simple in operation, but manufactured to precise tolerances as fine' x6 t& S* F" [
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single l. H/ F+ G3 _- r7 j. o
turbocharger many times, including final assembly. The balancing methods and. |+ q @" c5 T
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
+ @$ x* N4 y$ j; K7 Ntolerances required for today’s high speed turbos. It is now common for
7 d9 W' K t0 h2 y* [. iturbochargers to spin up to 150,000 rpm +.' m- K. S+ G. X' m
That’s approximately 35 times faster than most diesel engines rev at the red line!
% }8 S+ y& l( x* O. Y5 Z9 gSophisticated machinery and highly trained factory staff ensure that the highest
4 v9 B& C; u4 b4 A" wstandards are always maintained.8 o0 o! E9 ~" m) `9 l
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
# a0 b+ e6 R1 R3 T9 _8 `4 k2 \to always allow the engine to warm-up fully, until the water temperature gauge
& u# [% ]# K, Z* f$ x. \, N7 dreaches normal, before full throttle is used. Try to plan the end of your journey9 m- T9 S: P1 X
sympathetically. Don’t use full throttle or allow the engine to labour during the last- j& x) U" d/ [) t/ X* o% X: H3 e
few miles. This will prevent excessive heat build-up within the turbo when the engine
) F+ K$ O" J6 o# yis turned off. Also, when coming to a standstill, try to leave the engine idling for a" e. A9 M X% N9 E# j% O
few extra seconds to allow the heat to decrease. No need for a timer though, just undo: _0 Z. s/ C& b1 i6 |8 M
your seat belt first and then turn off the engine. Never rev the engine just as the
& |+ j* s) Z, s, n6 qignition is turned off. Remember the turbo spins at a far greater speed then the
' b% n4 }, q8 l1 D. Kengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
4 G- O: `: x9 S0 A$ B |! m9 ^within a few seconds. In reality, none of the above traits will cause a turbocharger to: ?' W2 E! m: A3 E4 J
fail immediately, but repeatedly over a long period, they could reduce the life of your
; T4 L9 C* ^+ |3 n7 u- wturbocharger.
, u0 L: Z, f5 q) r$ N% ?; KIf it becomes necessary to seek advice about a turbocharger or a turbo related
& f& T m' V' k0 K) O* C8 [problem, always rely on a professional. Berrima Diesel, together with DTS
* O7 g* K O0 S) K/ I) @4 iturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
* x. Z; ?1 \# ?+ s, Q$ ~of the most experienced turbo installation companies in the world. We can advise& d) v# ^; D& s3 X! F+ x! Z
customers with turbocharged 4WD’s on a wide variety of questions and issues
" q# D4 M+ w1 @# Zrelating to owning and running a turbo car.
/ C$ X+ H: p) f+ ~" Z' eIt cannot be stressed too much how important it is, when purchasing turbocharger
+ N7 [4 l ]) A$ S5 D! Qsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
0 G4 ?8 x) }, F6 ?5 E0 jso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
& [8 Z8 L3 [! ?4 g$ i; LWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk- J- B3 Z+ U5 I" U1 J7 a& y- C
that your short-term saving may turn out to be a long-term nightmare.
$ w$ v( {! S4 ~' wWhat is 'Boost'? o3 P3 _# o! G- f2 N) G% \
Boost is a term used to describe the increase in pressure, provided by the$ i8 N# A: B, V5 p- z& r
turbocharger, to the volume of air, entering the engine. This pressure is expressed in l7 ^3 h, p! x' s/ Y) w2 F5 }
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same- N7 M! v7 R8 b3 A" C/ b
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
5 o! {2 b- O: e% e m14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
: f7 | m3 b1 \; j, z' o$ toutput is increased. This pressure increase is called 'boost'.' H: T9 V+ T* c( u* C
How does fitting a Dynamic Turbosystem effect the power of my+ L2 h% |# z( S' t
vehicle?
! H# Y$ ~+ S& @% p2 l+ x- J, WModern 4WD diesel engines, typically produce peak torque (pulling power), at
( E) Y) |! W4 L8 d- Uaround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.7 G% {! m, m( a& [$ u5 E+ O O
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
% w0 q9 X& M8 @4 _" Vmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this4 s( m$ f5 O9 e/ Q
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
8 d/ J. F5 R" |8 L& t( Qat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
7 |3 o# E" j4 t I" d$ Gno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater" L9 c$ ^: z. U" E5 m
than the standard vehicle at the same R.P.M.
' b; P: k, w6 R0 e1 J) sCan I fit a Dynamic Turbosystem myself and, if not, how long and
: t3 ? \# ^1 D/ ]. l5 l' Uwhat is the cost of having it fitted for me ?
3 u" y# u/ O& h, V: B& d; _While most competent mechanics could probably fit a Dynamic Turbosystem,
- [* E- U+ H0 A: B7 f6 X! Dtuning requires specialised knowledge. The lack of this knowledge could have
5 l H5 s5 k! wserious consequences. In addition, warranty can only be provided on Dynamic
1 p/ ]0 L! \# Y6 P8 W! A% tTurbosystems which are installed by authorised facilities.
5 K$ ~, j: r( s4 D1 SThe cost of having the installation performed by Andrew at Berrima Diesel is
1 @, t7 r( o- e6 s* B; Q) Q* uonly about 10% of the total purchase price. This provides a warranted, correctly
0 P& g7 j$ T6 V/ z0 j1 v2 ?3 `. etuned, "no hassle" installation for the customer. All diesel vehicle installation can be
" y/ U8 P( G2 U$ M8 O8 Gperformed in one day.
& d6 X# U2 |9 r" e4 W, y oWhat creates the most heat? Fuel or turbo boost?% h8 L* f/ w7 h: V- g$ J0 V+ j
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
* _; z2 O }' vrequiring a butterfly are vacuum operated governor pumps) to operate. The more air
% ~* r+ ^* b Y, Wthe better. Add too much fuel to the equation and the exhaust gas temperature
/ d: `) o$ |8 i, F$ ]& Yrises rapidly.
) C: i1 D+ Q: z5 E2 x; lWhat type of oil and how often should it be changed ?
. b) W8 l6 p* a% `; g% P1 pTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic+ p# s# f8 Y9 v6 a" U( s, _4 R
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
1 ]7 u, z3 _ x: D5 Y" t1 zChange oil at intervals recommended by the vehicle manufacturer.
+ p. h# L9 ]0 N( |/ b( Z+ UHow long does a turbo last ?) r& \, F; w! u7 o( C+ I3 T
On average, as long as the engine or longer with regular engine servicing and good
5 T' T5 C5 K0 }/ V: Q% b+ h: `quality engine oil.
7 y# A! B+ H* F# U3 \What is a ‘dump’ valve or ‘blow-off‘ valve ?
3 C: L& R' d" W2 h# n# hA valve which relieves boost-pressure between the compressor outlet and engine as- I& K9 A, K. D- I6 l0 C8 f
the throttle is closed (Only required on throttle valve controlled diesels which are
+ n. a4 G i/ _8 u; lrarely seen these days). These are commonly fitted to hotted up petrol cars so it
/ y' t% i, |+ F) `0 E) Z3 R' gsounds good changing gears among other reasons!. t5 ~% m+ {! V2 ]+ h9 Z
Can I fit a turbo from another 4WD ?* E1 r# w) D, S8 G8 I- o* |
No, virtually all turbocharger are different inside, even if they appear similar on the9 L, P8 q; Q6 Z& A7 g2 G
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
c/ k4 b4 h4 R/ P) sspecification.
' D: X* c( S- {6 PShould I leave my engine ‘ticking over’ before it is turned off ?
: o2 s: a" F* m: d! ANot for normal every day driving, but still worthwhile if the engine has been under
) c7 [1 U0 P; j- cload or raced before being turned off. e.g. Towing a caravan or after climbing a long
9 Z9 w8 M: R1 K8 vincline.. k) |+ z' B$ h; T8 s
Why is it important to balance a turbocharger ?- G% V7 C! O% [& X1 F' |
Without highly accurate balancing, vibration will create a whining noise, reduce
; {, K: |7 m _4 v: I/ p! }turbo bearing life and reduce turbo efficiency.8 _% O+ ]# V. ^
How much boost does my turbo produce?
# ?& M' S) w; SCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
& k: y$ k5 A) h, @: CIntercooler turbocharged engines running upwards of 13PSI.% \" T; z5 K0 j( B5 H2 Q
How many psi in one bar ?
7 ]- |6 T" I# Q; I14.7 psi = 1 bar.1 O4 j! c5 O3 R, m( X4 E7 ?
Are all actuators the same ?
* Z8 j9 q3 Z/ y8 t5 J( sNo, each has a different opening pressure and rate.
% D& d, m3 l. ^' K6 ~7 O/ JOil in the turbo inlet pipe - Should I be concerned ?2 \, n' v( q/ ^: u
A small amount of oil usually exists, drawn in from the engine's crankcase breather6 Q+ O, C q1 k
system. High engine wear will increase the amount of oil found, and will require6 L4 v. N/ @2 {# C
further engine tests (not turbo).0 {$ x! p% W9 M3 r
Should a turbo be serviced ?
5 c# l3 F; \5 x* h" PNo specific turbo servicing is required, but regular quality engine servicing is needed
6 b: k3 T7 I+ d% {$ p2 G0 C5 Eto reduce the chance of turbocharger problems.$ z) q3 h, Z2 \$ j! i8 I- [
What is a water-cooled turbo ?
- F9 E4 L1 ~5 E6 sThe central part of the turbo, housing the bearings, is surrounded by a water jacket4 ]( }2 S1 I& m) O4 E' z* a
through which the engine's water coolant is passed. This water continues to circulate
" X- D4 R- |" T9 B; cafter the engine is turned off, cooling the turbo, and preventing heat soak.
) a( T% K( [, u$ ZDo I need to up grade my exhaust ?. S! m4 B+ Q7 |5 ^. {
Generally not. Our systems are designed to run utilising as much genuine component
; R @5 F! q. D7 ?/ Q0 Ias possible. Some systems on the market promote exhaust change as it is required by9 S1 _5 k; S% n
that particular turbo. Doing so usually picks up more noise than performance.
& N6 }! w) j/ x. yHow noisy should a turbo be ?1 f1 A' A d( j% P3 G
Only an unbalanced, worn out or damaged turbo will produce any significant turbo$ l' r0 Y, r4 N! j
noise.; s6 g. v2 b; _' \% j0 p
What is an intercooler ?
- X$ |+ c, r7 l, J& {) N5 TA special type of radiator which cools air before it enters the engine. As a turbo! a$ q% j- M+ A' Q2 \
compresses air, the air heats up. Power can be increased if the air entering the engine
" o; y( W0 p9 \4 xis cooler. The cooler air is more dense meaning that more fuel can be injected for3 ?( G2 U4 b) M: g7 n
more power.
7 Y$ ]! H& p. t" M0 K' `Will my vehicle run ‘cooler’ with an intercooler ?
! T. a; ~; ?7 HTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles/ p; A5 V7 q8 [# S% W* E& K
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
% P# N( a% O6 E6 rair passes out of the Intercooler over the air conditioning condenser and finally the
2 q6 B5 n5 y4 |( ^: x8 Bradiator. The poor old radiator is left with scraps of extremely hot air and then is( y6 c, V3 _! Q" E* t9 I
expected to cool the engine. We don’t advise fitting them as hot Australian conditions: }5 m1 L+ `/ ]7 G9 q: e
can often be the catalyst for engine heat problems.- }& M u4 c, q% i U( r) V
What will happen to my fuel consumption?: B& E. Z- N* {% l- T2 V8 }- s" V7 A
More power generally means more fuel. With a diesel turbo system, fuel consumption
$ D- W. x3 \" x; Lstays generally the same and can become better under towing conditions |
|
楼主: 晓风残月
狗仔卡
发表于 2008-7-10 11:10
显身卡
... 
发表于 2008-7-11 09:19
