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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.
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Tech Sheet9 y1 ~& ?, ?6 T
‘Frequently Asked’
3 e2 _ W, O! k: b‘Turbo Questions’(In no particular order)
% L7 b+ j( ]. A( jYour turbocharger is engineered to match the specific requirements of the engine it is6 ]8 f/ B" h! c, \
fitted to. Each is dependent on the other to maintain optimum performance. Don't. `" C; @- ~) j9 N* ]) k
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
3 T- u8 ^' a L# A% p- q$ |turbo's requirements are similar to the engine’s. It is, therefore, essential that0 p0 R# {! A$ c- s3 l% w9 M2 Q
scheduled servicing, using good quality oils and parts, is central to caring for your
: Z( a" [% X2 r. Oturbo.
. J6 c* [ N& q, LIn many instances Berrima Diesel receive turbochargers which have been. b+ k- o, i: s4 s. e' \% G$ x8 [
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
2 |1 u9 x$ A* ZIncorrect fault finding is often caused by a lack of product knowledge. Many
4 [: p+ V# i, a3 Fcontributory items around the engine bay can trick the unsuspecting into believing the) f* N9 H) F% l8 a' H- S
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
$ Z1 C9 t6 v9 T5 odiagnosed before a replacement turbocharger is fitted, the problem still exists!) C( e. H' o! B/ w0 c/ A
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
* ]/ e) X G: L, U' ~turbo can be killed in many ways.
9 B2 c* u* s5 Q. Z% L7 `) dForeign object damage results in either the air intake "compressor wheel" or exhaust/ k# w& Y2 h8 n4 ^6 c* E
"turbine" wheel being damaged. The former is often caused by someone accidentally2 O# z# E l7 q0 M; y; p! _4 `
leaving a nut or other foreign body in the air induction hoses. Please be extremely/ ~: Y7 s+ L+ B+ P
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,8 u- Y Z% f$ y7 q& v& E( A
this may be caused by part of an engine component, such as a piece of valve, exiting
, ~. B1 e, Y/ L# l% ]+ r+ \( Rthe engine in rather a hurry! In both cases it results in severe turbocharger damage* u/ {! i0 j) n0 [9 G& s$ N4 e
instantly.* L+ b& z" T$ B) B! r5 G& }# J
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
* @7 }' l9 K( R8 yas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
( M2 n* \2 d, Dturbocharger many times, including final assembly. The balancing methods and
F7 U5 }. g4 r1 |- j/ a% uprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine
; d- ^. F9 f) B! k, |8 E, J3 u" htolerances required for today’s high speed turbos. It is now common for0 v6 V( N: X1 `9 w4 }4 B
turbochargers to spin up to 150,000 rpm +.
5 C, F# u7 B% R) {That’s approximately 35 times faster than most diesel engines rev at the red line!' @, B( O7 S+ @# t7 K1 i" s
Sophisticated machinery and highly trained factory staff ensure that the highest/ I1 ^; s8 N. F- [
standards are always maintained.) K, S5 T" z$ U6 A5 t
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are+ b1 w$ J8 C( C1 [
to always allow the engine to warm-up fully, until the water temperature gauge
$ r* C2 P! v p- }* A* J- A- Qreaches normal, before full throttle is used. Try to plan the end of your journey8 Y- x3 R$ M5 O, ^9 T+ o w
sympathetically. Don’t use full throttle or allow the engine to labour during the last
0 `" s0 ]- A% M Q- Wfew miles. This will prevent excessive heat build-up within the turbo when the engine e/ N& Y( [5 S, i8 h: h
is turned off. Also, when coming to a standstill, try to leave the engine idling for a& N- L7 A) v1 ?% f
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
' @: H" d2 U2 hyour seat belt first and then turn off the engine. Never rev the engine just as the9 p8 P7 K7 r8 e0 f- K" Y
ignition is turned off. Remember the turbo spins at a far greater speed then the( o+ r0 D& l2 {
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
' K4 p9 y* J1 w# ]% d; ]within a few seconds. In reality, none of the above traits will cause a turbocharger to n7 Z! _# c1 y0 h5 ~ _" V4 w
fail immediately, but repeatedly over a long period, they could reduce the life of your
2 _( M8 T% U! P. J; x5 Yturbocharger.2 z3 ]* l4 }* x& p7 c9 L
If it becomes necessary to seek advice about a turbocharger or a turbo related
. n# v' Z/ _6 l, w Aproblem, always rely on a professional. Berrima Diesel, together with DTS! V: i+ S/ p4 z5 |- g! c7 `
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one* t" }+ [4 H$ d( E
of the most experienced turbo installation companies in the world. We can advise- N3 W& I: s) h) A5 q
customers with turbocharged 4WD’s on a wide variety of questions and issues/ D* e$ c1 @5 S. G
relating to owning and running a turbo car.( l4 Y8 U! j5 E9 B0 \
It cannot be stressed too much how important it is, when purchasing turbocharger
. U; i* a6 R( ?! k3 ?. esystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
8 n ?5 R8 a; w D! P( Rso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
+ m& h9 ]* A0 W; T% }Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
3 v( S9 f1 h, j0 r. O8 Y0 q, R* Zthat your short-term saving may turn out to be a long-term nightmare.; S$ |* `4 X; G& R3 Z4 U
What is 'Boost'?
: l# S& P9 E/ }, j3 g5 m; @( V* u, {7 jBoost is a term used to describe the increase in pressure, provided by the" U$ C9 W& a2 @5 G3 K) G5 m) ?) I
turbocharger, to the volume of air, entering the engine. This pressure is expressed in% _! l* b4 g: V- r% Y. v* W2 ]
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
Y' s# z" E: J; H$ Tthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
2 x) I- Z8 j8 a( z+ j1 c6 x( ?" K5 U14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power* c8 H5 s, o& S7 h+ g
output is increased. This pressure increase is called 'boost'.
6 T5 o1 A% m9 l4 D2 P, L$ T# R3 MHow does fitting a Dynamic Turbosystem effect the power of my
- N* Y0 }; K( B. \vehicle?, u. `1 O0 W" ?4 x l5 O6 A7 `
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
- C. D3 R# s+ B' p8 A6 `9 R5 E+ I8 c" haround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.4 Y, C1 B" s' S
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its; W+ L! _5 V9 G3 y. U
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
0 w6 h+ F3 d# a% B0 R* o) jpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,
4 y' X/ K8 L4 {/ o% I3 V9 B: l& Dat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
7 i# S% q5 j# `( {1 K, c# G5 Gno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater; \; {- v; M8 @3 u( t: x0 \( x
than the standard vehicle at the same R.P.M.* r2 ]# E# h# S) {' f
Can I fit a Dynamic Turbosystem myself and, if not, how long and0 }6 C' P& q: }
what is the cost of having it fitted for me ?
3 h1 _$ k" Y: X# aWhile most competent mechanics could probably fit a Dynamic Turbosystem,9 e) Z- ]& x# j) ^- t+ I
tuning requires specialised knowledge. The lack of this knowledge could have4 z1 v, d/ g/ j' ], M' M
serious consequences. In addition, warranty can only be provided on Dynamic
8 T) Z& ?4 N; O% u' dTurbosystems which are installed by authorised facilities.
6 h# ?; t: j: r6 M) gThe cost of having the installation performed by Andrew at Berrima Diesel is
~ D6 ^5 @; E; W* Jonly about 10% of the total purchase price. This provides a warranted, correctly
5 |$ A9 U% ?% S; x* Xtuned, "no hassle" installation for the customer. All diesel vehicle installation can be
% [7 D7 u0 W9 ]' h5 |' I$ @performed in one day.7 W2 C* ?1 B0 [, D
What creates the most heat? Fuel or turbo boost?
; c* D- M$ }$ g! K5 u* fDiesels do not need an air control (eg. manifold butterfly valve. The only ones; R/ h" V! E% L1 R9 [) D2 o
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
( V% R8 K6 _1 x- Q, D1 bthe better. Add too much fuel to the equation and the exhaust gas temperature0 R: f! i! |. f/ d+ }' Q, G- O
rises rapidly.
% {6 }7 E6 L$ W* |; h+ X& MWhat type of oil and how often should it be changed ?
3 H! E' w+ u7 ^Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
) P4 K8 r3 c2 h8 e7 l* x3 k+ @: Gengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
* I% { f7 w) a" j& s, L" FChange oil at intervals recommended by the vehicle manufacturer.+ R0 o5 Y& \! @" n
How long does a turbo last ?! E, L8 D6 [; D e: \
On average, as long as the engine or longer with regular engine servicing and good/ o" w# C# _; n: I3 F
quality engine oil.6 J- ~# z* ^& `2 x) E9 D5 z' J
What is a ‘dump’ valve or ‘blow-off‘ valve ?
7 Z3 [4 I/ s* ~( v* ~' h# aA valve which relieves boost-pressure between the compressor outlet and engine as
, B Y$ J( s0 E P; u2 Vthe throttle is closed (Only required on throttle valve controlled diesels which are
# c4 d1 c- c6 E2 wrarely seen these days). These are commonly fitted to hotted up petrol cars so it
" j# n6 I; a5 t2 Q. }2 E5 Y1 h1 {sounds good changing gears among other reasons!8 L5 h+ ^- z. ]9 g: K$ p# ~
Can I fit a turbo from another 4WD ?1 P. ~* [3 N. u d) q3 x* ]
No, virtually all turbocharger are different inside, even if they appear similar on the
8 N) L& [ _( R3 S) `outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the" W# A6 L0 s6 l# q
specification.! N2 i3 x0 V# M& J9 D! v
Should I leave my engine ‘ticking over’ before it is turned off ?$ n, i6 t; v9 ^6 q" ~
Not for normal every day driving, but still worthwhile if the engine has been under
( K" K. @, Z- S: R) C' |3 Eload or raced before being turned off. e.g. Towing a caravan or after climbing a long
|4 {2 c7 Q0 f/ oincline.9 R8 d" h- y- `
Why is it important to balance a turbocharger ? Z- N1 Z( ~# B3 O* C
Without highly accurate balancing, vibration will create a whining noise, reduce
/ v8 a, k$ i0 V. P! Pturbo bearing life and reduce turbo efficiency.# V$ y) @# D" K+ |, A V7 I
How much boost does my turbo produce?% x1 U0 r5 X w0 u! i
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
3 s) k- O h8 c- k r) l$ U3 Z: hIntercooler turbocharged engines running upwards of 13PSI.$ | z' D* _5 r- F
How many psi in one bar ?
; F `2 E2 X9 A5 U p8 t$ f, z14.7 psi = 1 bar.7 h! n5 J" O6 W K0 A" l
Are all actuators the same ?3 j2 |6 d3 I# J8 U
No, each has a different opening pressure and rate.
' q: g- A# l+ S! V' k4 f! VOil in the turbo inlet pipe - Should I be concerned ?
5 e- L8 ]0 o) g1 ?: s: hA small amount of oil usually exists, drawn in from the engine's crankcase breather
1 N. S, _& x4 V3 q5 lsystem. High engine wear will increase the amount of oil found, and will require* H+ t' a' N8 F$ N; b f4 U
further engine tests (not turbo).
' s9 i2 x# G' rShould a turbo be serviced ?
/ a! B3 ^4 w4 D( @' g4 S* ~9 V% NNo specific turbo servicing is required, but regular quality engine servicing is needed
' J3 a/ e i6 k5 N3 rto reduce the chance of turbocharger problems.
5 _% R3 i0 [' S) T# @What is a water-cooled turbo ?4 @$ ~+ }% [- `+ W# |* B
The central part of the turbo, housing the bearings, is surrounded by a water jacket
' t1 H& z- k {through which the engine's water coolant is passed. This water continues to circulate
# s5 D+ b& q i8 F& `4 I2 Vafter the engine is turned off, cooling the turbo, and preventing heat soak.
+ \- N# Y: S; d Q0 `; z. iDo I need to up grade my exhaust ? t; i5 y- G: F" ~' L% }- f# g
Generally not. Our systems are designed to run utilising as much genuine component' ?. R! ~2 S! b9 @- a7 X
as possible. Some systems on the market promote exhaust change as it is required by
% Q9 S. z9 e% v4 ]9 Bthat particular turbo. Doing so usually picks up more noise than performance.+ e _* H3 c, ^
How noisy should a turbo be ?! ]3 I: J$ L$ A8 ?
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
8 I# m6 u1 G4 E: N6 H& vnoise.
% s5 t8 Y! A+ A. tWhat is an intercooler ?! I i; c2 z/ Z! ^" r5 D/ ]
A special type of radiator which cools air before it enters the engine. As a turbo
$ D) S4 ]( m7 F( |$ U% [7 @compresses air, the air heats up. Power can be increased if the air entering the engine
7 |5 c3 J' X2 \# K: L) l) mis cooler. The cooler air is more dense meaning that more fuel can be injected for$ S) D, H- i- _
more power.6 K9 V# |0 \6 g k
Will my vehicle run ‘cooler’ with an intercooler ?3 m- f$ N1 Y: ^; e
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles% M# G- k9 d& ?, Y% G. V
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
9 O2 J1 Q1 d, d0 u$ |6 U+ r: Nair passes out of the Intercooler over the air conditioning condenser and finally the. ^" R$ ?" {+ y% c
radiator. The poor old radiator is left with scraps of extremely hot air and then is
2 _3 Z' V2 Z3 E2 o; @8 Y/ H, yexpected to cool the engine. We don’t advise fitting them as hot Australian conditions6 K3 L' r5 d# j& k" t t& h/ `) \0 c$ ]
can often be the catalyst for engine heat problems.2 q$ Z3 J" o5 @ \/ D0 ]. |: d, c! P
What will happen to my fuel consumption?
' @2 ?# Y$ e9 }* C% k& GMore power generally means more fuel. With a diesel turbo system, fuel consumption
/ m, T- C [$ ?# u ystays 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
