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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. & g1 W z4 x6 X% ?6 n' j
' V1 T0 y5 y! N" n4 ?# K& a; `# m; N# {( z* C( H* c6 p
Tech Sheet, j; i4 \7 P: m
‘Frequently Asked’
& P% q/ C' T* [! H# }9 I, b‘Turbo Questions’(In no particular order)
4 a! U. V3 Z+ m( q% ^/ e! TYour turbocharger is engineered to match the specific requirements of the engine it is( P; F2 G+ K3 X4 I
fitted to. Each is dependent on the other to maintain optimum performance. Don't
: `; H6 L0 l6 B/ ythink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
; u7 |: {/ N) f6 ~8 m) y9 H& Zturbo's requirements are similar to the engine’s. It is, therefore, essential that3 m( T+ A+ a8 n, t: x6 e3 w
scheduled servicing, using good quality oils and parts, is central to caring for your
% }4 N3 o, [; Q3 v* \. Sturbo.
2 K1 p$ k0 f" i& Z7 DIn many instances Berrima Diesel receive turbochargers which have been. ]8 \9 h3 u# S1 C+ _6 u& l
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
2 C) ~3 ]1 P- B* w6 n0 J. UIncorrect fault finding is often caused by a lack of product knowledge. Many
/ G, B: g& G N/ V; X5 Y+ ocontributory items around the engine bay can trick the unsuspecting into believing the$ N& t) b. B5 y
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not: ?3 N0 r- x# K& ]3 |6 I+ N* y! C
diagnosed before a replacement turbocharger is fitted, the problem still exists!
. v- z0 n1 I' oWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
' N r7 N; X0 u0 f' ?turbo can be killed in many ways.
0 N" Q) S* u" T! h/ YForeign object damage results in either the air intake "compressor wheel" or exhaust3 I. c. p+ [( g/ h: |! s5 X& L
"turbine" wheel being damaged. The former is often caused by someone accidentally
& g, Y9 r9 z/ I. K' }+ X% D/ Pleaving a nut or other foreign body in the air induction hoses. Please be extremely' Y) E0 Z& v& J, l( ?& v5 H
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,1 {& p' Y% w0 v
this may be caused by part of an engine component, such as a piece of valve, exiting. o2 [8 O% z. X* D8 V' b2 L) P
the engine in rather a hurry! In both cases it results in severe turbocharger damage; v6 O- A! t* @
instantly.# r$ Z3 q2 V5 i+ L
Turbochargers are simple in operation, but manufactured to precise tolerances as fine+ m+ _0 K2 n) X1 N3 \9 [ t5 O0 Z
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
/ U* q' b# g8 h. Oturbocharger many times, including final assembly. The balancing methods and0 | ?1 G* H0 L9 Z5 ~
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
3 j* e( e5 y0 Z% ?4 C9 M& Stolerances required for today’s high speed turbos. It is now common for. U/ N8 z9 U2 F% [! W9 }; i% r7 I7 p
turbochargers to spin up to 150,000 rpm +.
. T" L/ a$ s5 iThat’s approximately 35 times faster than most diesel engines rev at the red line!
! i! M: G$ }7 C2 @7 F0 N* rSophisticated machinery and highly trained factory staff ensure that the highest, l0 Z0 n+ ~- ?, \8 _
standards are always maintained.
6 X$ d% n% P3 `* M" kUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are
9 o! Z9 O# ]7 E' c4 k7 @/ Yto always allow the engine to warm-up fully, until the water temperature gauge6 w( t- F% U+ q. i" ]( Z5 W+ c
reaches normal, before full throttle is used. Try to plan the end of your journey8 p" o* p- F0 M
sympathetically. Don’t use full throttle or allow the engine to labour during the last
. Y# g+ c- w2 {. k! u% ]2 _ n' Vfew miles. This will prevent excessive heat build-up within the turbo when the engine: J. y0 R" Y# v4 r7 B+ ]2 t v
is turned off. Also, when coming to a standstill, try to leave the engine idling for a% X Z! o4 s9 Q) Z
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
: F& K$ V) O0 n" a2 X5 s8 ` Yyour seat belt first and then turn off the engine. Never rev the engine just as the7 B" r0 N1 A: R, r8 H$ \* o
ignition is turned off. Remember the turbo spins at a far greater speed then the
* ~5 K) b$ J _# l1 \) M1 w Sengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases6 {" U- D3 J3 F% a9 }) Z& T1 E
within a few seconds. In reality, none of the above traits will cause a turbocharger to
, {( c+ ^7 R7 Dfail immediately, but repeatedly over a long period, they could reduce the life of your; e: I4 B& u) Q1 e
turbocharger.* e8 C7 ~& U! t4 X. {: s! D: c" y1 `
If it becomes necessary to seek advice about a turbocharger or a turbo related" P. j. \% n% ]+ ?
problem, always rely on a professional. Berrima Diesel, together with DTS
* q! i( g* B) t$ w Dturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
( N5 X( Q5 e' d0 Mof the most experienced turbo installation companies in the world. We can advise
9 R6 B; z5 z: @8 P! f* Z2 Lcustomers with turbocharged 4WD’s on a wide variety of questions and issues/ z* K8 N& g, p
relating to owning and running a turbo car.
& V# d4 g/ J# OIt cannot be stressed too much how important it is, when purchasing turbocharger
5 P8 F2 T3 _( O: y6 u. k7 Psystem, always to choose the top brand name -Berrima Diesel. Consider this. As with _7 L7 l' `- t2 @3 B) ^
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.7 Z2 P! ^8 s1 P! }1 e
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
& j+ c3 D* ~: k1 }* ^4 othat your short-term saving may turn out to be a long-term nightmare.
0 R7 a" Q7 r! |# RWhat is 'Boost'?
+ t. D& r/ N, DBoost is a term used to describe the increase in pressure, provided by the" l$ K. f" l, `7 O v" L/ B, m; A
turbocharger, to the volume of air, entering the engine. This pressure is expressed in
o4 a. i6 ^ P# M* @, D6 ?4 Ca number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same, m& Q0 S, d! L' _! Y* K5 }4 Q
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
$ q& V$ U+ {& M5 @14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power8 e Z W9 b$ Z; ^: U; E$ M( A! X
output is increased. This pressure increase is called 'boost'.) _) J. `9 U+ Y. L3 q; q
How does fitting a Dynamic Turbosystem effect the power of my& E6 W5 Y1 l6 l
vehicle?
7 P) y4 U+ }( D' ]% ]Modern 4WD diesel engines, typically produce peak torque (pulling power), at
$ k" N( ]' Q# o. Z( u! `$ F/ waround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
" B2 J' v+ x+ I# `Turbo boost starts at approximately 750 R.P.M. and rises progressively to its* b1 K7 K( _/ P% G$ j: z4 t
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
) z& n; S: |% j, p6 dpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,0 a# Q, d: ~9 f: n
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At% V! O' \/ u3 W2 f$ e {
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
3 o" c) B5 @1 w9 \. i5 m* \than the standard vehicle at the same R.P.M.
R3 }6 { _, o7 l9 t( lCan I fit a Dynamic Turbosystem myself and, if not, how long and
$ @, w8 B9 N$ X; X6 G1 qwhat is the cost of having it fitted for me ?7 F. [4 ]; _9 h8 e$ a( S
While most competent mechanics could probably fit a Dynamic Turbosystem,8 W& O$ a# ]& ^. Y3 y4 Q s* U
tuning requires specialised knowledge. The lack of this knowledge could have
. Y9 H4 r3 ^7 ] _) W8 p# I' Dserious consequences. In addition, warranty can only be provided on Dynamic2 M! R6 i8 Q. b+ F1 s E
Turbosystems which are installed by authorised facilities.2 H; V L% W2 l; R
The cost of having the installation performed by Andrew at Berrima Diesel is
8 v4 K" Z) E B( L/ A/ I3 tonly about 10% of the total purchase price. This provides a warranted, correctly9 k) ~4 V9 m' Z1 a8 h6 @% z
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be$ s d6 b* r1 n. n
performed in one day.) A$ L: t4 A) @" ^
What creates the most heat? Fuel or turbo boost?' X. G; S D+ n, G7 H# R) s
Diesels do not need an air control (eg. manifold butterfly valve. The only ones1 R! i4 z& P. p2 C+ P
requiring a butterfly are vacuum operated governor pumps) to operate. The more air3 N8 t, K- F* P' S. k) N
the better. Add too much fuel to the equation and the exhaust gas temperature
9 C0 ?. v1 B! frises rapidly.
5 ^7 a5 X$ |6 HWhat type of oil and how often should it be changed ?
1 e+ ~ S! {6 J5 y4 g+ Z5 kTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
6 L k% G8 e$ u" V% C) ?& Qengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .+ i/ I1 P& e* R5 [7 d. j& f! ~ @
Change oil at intervals recommended by the vehicle manufacturer.
5 y: ?7 b, }3 w4 GHow long does a turbo last ?
& {. ?3 u5 ?+ t3 @On average, as long as the engine or longer with regular engine servicing and good
8 p# u% k2 g# E8 ?quality engine oil." P1 U$ k# I! \+ f
What is a ‘dump’ valve or ‘blow-off‘ valve ?
6 O( ^! ^/ T$ S0 u8 a+ R FA valve which relieves boost-pressure between the compressor outlet and engine as$ W* T9 _- ]% H C- w9 m G
the throttle is closed (Only required on throttle valve controlled diesels which are
8 d$ X) q) i# xrarely seen these days). These are commonly fitted to hotted up petrol cars so it
+ ]* Y$ w3 ^, P2 D2 e8 }sounds good changing gears among other reasons!
- L$ Z; F% ?; J2 Z* K* n! RCan I fit a turbo from another 4WD ?
; R3 B) S$ q) tNo, virtually all turbocharger are different inside, even if they appear similar on the
0 B' e a. c5 A/ h5 Routside. The turbo model e.g. Mitsubishi TD04, is only the model, not the, w) T0 E& s* ^ j$ ]5 t$ ^& E4 }- ` S
specification.
, }1 S$ {$ B7 S. [4 l% J$ a/ ]Should I leave my engine ‘ticking over’ before it is turned off ?! t" D N0 J/ @; s& D) m# |1 c
Not for normal every day driving, but still worthwhile if the engine has been under
/ M# P) C6 n2 L+ sload or raced before being turned off. e.g. Towing a caravan or after climbing a long
: o) W6 s0 V) R3 O- \- d! e7 sincline.
6 r! k) C' ]) s% t6 Q7 AWhy is it important to balance a turbocharger ?4 k* c2 [( Y! q* ]7 a( \5 x
Without highly accurate balancing, vibration will create a whining noise, reduce
$ h2 y# |, N/ K q9 Q+ Dturbo bearing life and reduce turbo efficiency." \" |! B' N |& s- t
How much boost does my turbo produce?: F/ z4 m$ P& u7 ~
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
" N- K8 G$ e6 F* V1 R1 Y8 CIntercooler turbocharged engines running upwards of 13PSI.
* s1 P( M; d4 v7 YHow many psi in one bar ?6 u L1 w; N! ]9 G0 P7 ?
14.7 psi = 1 bar.
7 p7 l5 K, X. WAre all actuators the same ?6 h% i* H7 t x6 ?" D
No, each has a different opening pressure and rate.
5 U2 t. [: _4 D3 ?0 OOil in the turbo inlet pipe - Should I be concerned ?
8 ^0 v1 q+ f1 H+ x D! b* BA small amount of oil usually exists, drawn in from the engine's crankcase breather
) p) N' n/ `. a- f8 f1 `/ x% Msystem. High engine wear will increase the amount of oil found, and will require
: o5 y9 V+ [8 C2 p1 b& m% w6 n: Qfurther engine tests (not turbo).! {8 ^" \, u# R2 `& e( @& {0 F
Should a turbo be serviced ?
: R0 i2 N: ]$ T, G9 x) k* fNo specific turbo servicing is required, but regular quality engine servicing is needed
; n# {9 ]5 c! Nto reduce the chance of turbocharger problems.4 M% j9 k5 w4 `7 \$ x) `
What is a water-cooled turbo ?' G! r6 k6 I1 _2 y% g
The central part of the turbo, housing the bearings, is surrounded by a water jacket" w- F1 Y) |9 K- r
through which the engine's water coolant is passed. This water continues to circulate
* A' F7 I6 {# Z8 Z* [after the engine is turned off, cooling the turbo, and preventing heat soak.
7 a3 E) t( r6 E, n. mDo I need to up grade my exhaust ?) g* R3 A( Y! I$ R( O/ P2 `
Generally not. Our systems are designed to run utilising as much genuine component
- t+ ~: D4 y' ~4 K. Cas possible. Some systems on the market promote exhaust change as it is required by
, ~* E6 e9 ~0 H: R9 [6 m8 othat particular turbo. Doing so usually picks up more noise than performance.$ o4 E1 U! O7 S/ a3 S6 |
How noisy should a turbo be ?
2 Q9 Y6 R+ ^8 ~& I3 m0 A9 z$ nOnly an unbalanced, worn out or damaged turbo will produce any significant turbo
4 M' C, N, U& I8 Pnoise.
0 z1 z7 C* }- A! J, Y# oWhat is an intercooler ?
$ q3 f. _5 L# z1 M) aA special type of radiator which cools air before it enters the engine. As a turbo
0 V1 l/ Y& u* e/ ?5 h% scompresses air, the air heats up. Power can be increased if the air entering the engine
' `4 ~# }% S3 p z- \& q# His cooler. The cooler air is more dense meaning that more fuel can be injected for
0 q* ^/ E. ~) `" C9 ?, ]more power.
( d; H# @' U1 y) t+ DWill my vehicle run ‘cooler’ with an intercooler ?7 [ b! w+ C( f2 p8 [" J8 w/ X4 b
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
% G: G9 k% ^/ K( R ? urunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
( v2 M6 ?; ?3 @/ t1 u6 A. m% dair passes out of the Intercooler over the air conditioning condenser and finally the
/ s, x5 N+ A, T, P% Aradiator. The poor old radiator is left with scraps of extremely hot air and then is
( m* n( i& \$ T$ a3 Y- z7 f! ~8 rexpected to cool the engine. We don’t advise fitting them as hot Australian conditions
+ J: J0 ^. z9 Ycan often be the catalyst for engine heat problems.
7 C3 i& k1 f" U7 j) x2 LWhat will happen to my fuel consumption? ~& {2 F* R6 {$ Z8 M* G
More power generally means more fuel. With a diesel turbo system, fuel consumption
& ?; b( T( ]4 d, R! Cstays 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
