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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. * i/ L) u# M- ~7 ]1 n
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9 I" C# A) P' Z5 y0 {. T
Tech Sheet
& o% e; L& X" g; z" `‘Frequently Asked’+ ^4 N. G7 }5 Q$ ~5 Z) C
‘Turbo Questions’(In no particular order)
6 \ x A. b/ D* dYour turbocharger is engineered to match the specific requirements of the engine it is- P4 J# v; L- Z0 O) {
fitted to. Each is dependent on the other to maintain optimum performance. Don't8 L4 E; b" q4 [0 t
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
6 H: e0 J$ M6 k3 q0 K; ?7 {% oturbo's requirements are similar to the engine’s. It is, therefore, essential that
' A z) @# H4 {0 Yscheduled servicing, using good quality oils and parts, is central to caring for your
z& e+ U4 F5 Qturbo.
8 Q* J, [" A4 _# s, D. v& FIn many instances Berrima Diesel receive turbochargers which have been/ J! }, _7 a5 R$ p9 E
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
& W) e6 q* |: c. A8 g8 c& wIncorrect fault finding is often caused by a lack of product knowledge. Many: i, `8 r. d( b5 B! i
contributory items around the engine bay can trick the unsuspecting into believing the5 v( C. A, y G+ O2 U# A+ |9 p
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
$ l! b1 p9 A1 I# e( A: C0 Z; {diagnosed before a replacement turbocharger is fitted, the problem still exists!
3 O' m: n0 @8 t, A# j# @% rWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A v/ I9 ]' S% Q
turbo can be killed in many ways., Z0 B% e0 u) r! A3 g: I$ i
Foreign object damage results in either the air intake "compressor wheel" or exhaust
/ j3 \( y- p# P; D"turbine" wheel being damaged. The former is often caused by someone accidentally
1 H/ m1 d9 w X5 N- [, H; d8 a# _leaving a nut or other foreign body in the air induction hoses. Please be extremely4 W/ e& S* [& h) ^$ _+ ~4 V0 w
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
) w' F0 ^) d1 d) Z* P, S$ Ythis may be caused by part of an engine component, such as a piece of valve, exiting+ K) j& w* d# ?7 X1 k
the engine in rather a hurry! In both cases it results in severe turbocharger damage
# L0 q" g4 k9 B7 j3 E+ O* {$ C' Y. Zinstantly.! W( J! v0 A8 M8 P: J- h
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
; H* d$ b5 P3 S. D1 D; u. Bas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
0 B" s5 S9 x' I8 T1 G/ M) g; g4 P _turbocharger many times, including final assembly. The balancing methods and0 n; a6 V0 j) b5 Q& c9 ]
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
- \: T. Z/ C* g2 Ytolerances required for today’s high speed turbos. It is now common for% N3 o. @/ E, y: N0 V
turbochargers to spin up to 150,000 rpm +. Q+ W. A$ f1 [7 k" T/ O- w# g
That’s approximately 35 times faster than most diesel engines rev at the red line!
: K4 F! f8 c) V/ r3 E% iSophisticated machinery and highly trained factory staff ensure that the highest, U& v5 p" C6 u4 [7 v
standards are always maintained.
2 J) b: u! a" k( X, j. CUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are
- {+ \2 B& h/ k. \to always allow the engine to warm-up fully, until the water temperature gauge
& y0 h. M5 C2 t; A, qreaches normal, before full throttle is used. Try to plan the end of your journey6 O' Y# Z1 c b* i( g
sympathetically. Don’t use full throttle or allow the engine to labour during the last8 ~1 j( f( G) z* U9 g
few miles. This will prevent excessive heat build-up within the turbo when the engine% v7 U. K% i8 n0 r
is turned off. Also, when coming to a standstill, try to leave the engine idling for a- H5 i7 @* ~# l- O
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
6 F8 e' r- ?: p, G$ hyour seat belt first and then turn off the engine. Never rev the engine just as the
3 }; k; F$ p. E+ y# p# h9 zignition is turned off. Remember the turbo spins at a far greater speed then the
! w$ F1 @4 {) R1 g$ qengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
9 H4 p/ I7 x# S* Dwithin a few seconds. In reality, none of the above traits will cause a turbocharger to' l7 ]" _# ?2 a- B# P' \" Y) j+ a9 |
fail immediately, but repeatedly over a long period, they could reduce the life of your3 m! Z4 L1 T* ~9 v' x' ?7 I1 V9 R
turbocharger.- y: X! u3 _5 e' m9 z* w% l
If it becomes necessary to seek advice about a turbocharger or a turbo related
$ P: O( ~$ ?* s2 Hproblem, always rely on a professional. Berrima Diesel, together with DTS% r4 M4 i; W8 S# E) y. S6 ^
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one# ^9 b2 u) D* k. m
of the most experienced turbo installation companies in the world. We can advise
3 v8 R3 i7 F2 Y6 q6 }' @customers with turbocharged 4WD’s on a wide variety of questions and issues& ~4 k; m I% V5 E% R7 _& [ ^
relating to owning and running a turbo car. N0 t+ X" M' m* f; X; ^( r& ~
It cannot be stressed too much how important it is, when purchasing turbocharger3 }) \& w4 ~1 X0 b
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
7 J5 @1 E3 ]8 \3 K( m/ x4 kso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
0 P) ^: U9 u3 p; c8 C0 K& QWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
2 G. C$ V7 H5 ?* R$ v# Fthat your short-term saving may turn out to be a long-term nightmare.; B$ a$ L$ Y) b; _
What is 'Boost'?
{: o1 z& k) R4 e" yBoost is a term used to describe the increase in pressure, provided by the. Z9 D: f# h) @) N2 `
turbocharger, to the volume of air, entering the engine. This pressure is expressed in N* ^& Y; J; N! E; {% M) ^
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
1 `7 [! f% ^" l4 e, Pthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
: s" M: v* u$ W5 m1 E. _14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power! x! W7 k' }. a' W; {1 X. f6 q
output is increased. This pressure increase is called 'boost'.4 u, s v7 m& o1 H7 `3 y
How does fitting a Dynamic Turbosystem effect the power of my
. c1 k! L9 I$ l+ C& L+ D9 |8 e) ^vehicle?4 l2 {6 U9 _6 v' `) O$ ^
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
8 |7 R; o# I, O2 Z( m m# M `around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
3 A1 f9 [$ p0 z; _4 j9 C3 LTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
, X s, c) u+ j" U# E# imaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this. \" v6 k/ f( ]& m/ d
point, the percentage torque increase of a correctly tuned installation is approx. 40%,5 ^ ?- T/ R' U1 D4 E1 B( r, i
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
% I! i3 D: {! wno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
3 L5 k8 j c6 P0 n& V/ c- jthan the standard vehicle at the same R.P.M.9 ?0 Y) M* ?# h4 X2 [& @; ~# w' h
Can I fit a Dynamic Turbosystem myself and, if not, how long and
: \% x& l/ ?+ A' |7 Vwhat is the cost of having it fitted for me ?- R5 ~, J* b7 {6 A" w: M* ]
While most competent mechanics could probably fit a Dynamic Turbosystem,
1 f& |% W l3 n6 @2 X8 btuning requires specialised knowledge. The lack of this knowledge could have& b# B! i8 p4 D+ A! n
serious consequences. In addition, warranty can only be provided on Dynamic+ V- q; V/ a3 W. M6 G
Turbosystems which are installed by authorised facilities.
/ o4 ?& W' j/ S) f; A! m" C) Z0 Z# H- f* mThe cost of having the installation performed by Andrew at Berrima Diesel is
X1 @3 |7 y1 ~9 r+ E/ Sonly about 10% of the total purchase price. This provides a warranted, correctly* F; k% c# N) D. {% n; V
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be) f) O5 r1 E* P! t
performed in one day.
3 D5 n0 _ @/ e" ~6 K h/ R8 v4 NWhat creates the most heat? Fuel or turbo boost?
+ a# U! B' B9 ^, O. {9 cDiesels do not need an air control (eg. manifold butterfly valve. The only ones4 K7 a5 Y4 N4 b# H" G4 ^3 V9 P
requiring a butterfly are vacuum operated governor pumps) to operate. The more air9 u3 q! w7 |, I0 D3 V& f$ \8 n
the better. Add too much fuel to the equation and the exhaust gas temperature+ ~) @* T6 G2 E3 o9 P& Q
rises rapidly.
6 E# M w2 T) B6 hWhat type of oil and how often should it be changed ?
S! A( Y, ^- `9 @2 N2 Z g4 }. c: KTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
: X% b- ^$ }5 G$ L2 J) Bengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .+ s" x# h7 E: H
Change oil at intervals recommended by the vehicle manufacturer.1 T! S N7 r) g* e2 r9 F5 o
How long does a turbo last ?
; k' r* }7 t' b. Z8 [- u9 sOn average, as long as the engine or longer with regular engine servicing and good
8 _5 l: y8 w h2 B5 hquality engine oil.* S' U- g. h, Z6 v
What is a ‘dump’ valve or ‘blow-off‘ valve ?8 j u R9 {% f, |
A valve which relieves boost-pressure between the compressor outlet and engine as5 z' z) p- {0 ^1 N/ C6 l
the throttle is closed (Only required on throttle valve controlled diesels which are
2 E! c( n. Y& P/ T# o4 trarely seen these days). These are commonly fitted to hotted up petrol cars so it
, d# D) t" _% w, J2 d0 `7 q) Qsounds good changing gears among other reasons!
1 F: Z' S; J5 C, eCan I fit a turbo from another 4WD ?
2 k7 V0 B! f( L$ O5 m& RNo, virtually all turbocharger are different inside, even if they appear similar on the* j. q5 v& G( j
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
% f" L' a( C/ u6 M( p/ _3 [2 {specification." Y1 O i# z) l$ U
Should I leave my engine ‘ticking over’ before it is turned off ?% b) v, v4 Y6 w. m3 k
Not for normal every day driving, but still worthwhile if the engine has been under, @/ b/ {2 |, u
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
1 X' R) G' c Cincline.9 }% S9 m, N1 d+ H+ e; ?- O
Why is it important to balance a turbocharger ?7 Z5 `2 a% s0 ~
Without highly accurate balancing, vibration will create a whining noise, reduce
& @3 a5 l H' w! Wturbo bearing life and reduce turbo efficiency.9 T: O2 A! E0 \- _. s
How much boost does my turbo produce?4 G# w/ g" U5 J! X) K0 @
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with- `" w% n( `7 o7 o
Intercooler turbocharged engines running upwards of 13PSI.
: C3 F8 M' Z& s$ J1 r, pHow many psi in one bar ?1 a+ I6 G' L# v8 q. ~8 F
14.7 psi = 1 bar.' u! n! b/ y7 S" _; t! h
Are all actuators the same ?% M: L9 b9 W6 Y9 t# n; S
No, each has a different opening pressure and rate.
k+ r2 D$ s1 @, R- k% H' S) S4 MOil in the turbo inlet pipe - Should I be concerned ?
% m3 j- i3 m, K/ b: ?A small amount of oil usually exists, drawn in from the engine's crankcase breather8 w4 Y$ L2 d/ a v- w5 y
system. High engine wear will increase the amount of oil found, and will require/ ^0 s/ {) u* Q8 Q, a. o
further engine tests (not turbo)." n, V4 y1 B8 {6 t5 l
Should a turbo be serviced ?
# @) f) l: I3 UNo specific turbo servicing is required, but regular quality engine servicing is needed
5 K) [0 q6 h1 B Q/ f' `to reduce the chance of turbocharger problems.5 `0 w2 b' W+ P8 X, A3 F
What is a water-cooled turbo ?
& O: f, _9 \% G, Y. c mThe central part of the turbo, housing the bearings, is surrounded by a water jacket
+ f: c! b# \ c) F: x+ q/ Rthrough which the engine's water coolant is passed. This water continues to circulate
3 ?! s- l! B( D7 Qafter the engine is turned off, cooling the turbo, and preventing heat soak.
2 P7 n- R( @& fDo I need to up grade my exhaust ?
& Q) t% H0 u( p9 J/ \( X' kGenerally not. Our systems are designed to run utilising as much genuine component! o2 j" e+ m m0 S4 @& [" B
as possible. Some systems on the market promote exhaust change as it is required by
) X6 z$ _; ]) C9 q9 Pthat particular turbo. Doing so usually picks up more noise than performance.' ~9 S( N6 w/ W# U8 j
How noisy should a turbo be ?; r0 y3 y: P( x
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
- \" h! g6 @, I; R5 B: {noise.
1 b$ |# [' j& D: |2 y9 Y, NWhat is an intercooler ?& g) ]( I( I' r( m
A special type of radiator which cools air before it enters the engine. As a turbo1 x/ d. L$ R% ^+ K5 b2 R
compresses air, the air heats up. Power can be increased if the air entering the engine
8 V* B. @6 O/ `9 l# Z0 X* O/ wis cooler. The cooler air is more dense meaning that more fuel can be injected for# l6 P" ^! M7 m
more power./ z: @9 ], _3 `8 s w
Will my vehicle run ‘cooler’ with an intercooler ?- y3 o2 p% r" D
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
: M t7 _ v- S% Drunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
. I# C/ \+ L( M6 h2 M8 f7 xair passes out of the Intercooler over the air conditioning condenser and finally the
% C, x ~) E" x( vradiator. The poor old radiator is left with scraps of extremely hot air and then is
! Y8 l0 w# ^$ x4 ^ b9 ]* {expected to cool the engine. We don’t advise fitting them as hot Australian conditions L1 D/ \% y* n0 {
can often be the catalyst for engine heat problems.
$ U( n8 V, z G/ w5 t8 iWhat will happen to my fuel consumption?6 ~8 w" R g! N# l6 p5 I
More power generally means more fuel. With a diesel turbo system, fuel consumption8 d' b+ h6 {( e4 i
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
