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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. ! w8 j" ]" k* J& V. a/ l
4 Q6 j$ u* U5 m4 M" y% u
5 A) o7 m T! f; i; Z0 OTech Sheet
+ g6 D! j: J2 ^‘Frequently Asked’( k0 ^, { h2 S7 _
‘Turbo Questions’(In no particular order)" k: A! _ r8 @4 \: \
Your turbocharger is engineered to match the specific requirements of the engine it is
1 M! X# O* W4 j1 y6 z0 jfitted to. Each is dependent on the other to maintain optimum performance. Don't
- ?) e) j f8 j2 bthink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
4 d" o/ C8 h, X. A7 Kturbo's requirements are similar to the engine’s. It is, therefore, essential that' t3 o) t# T$ w" z
scheduled servicing, using good quality oils and parts, is central to caring for your
% S8 w6 R& L% L+ C) V3 ?7 \9 J" Wturbo.4 k8 y8 U$ J# `* c5 T: p- W! D
In many instances Berrima Diesel receive turbochargers which have been: a( B, J! B$ I7 `! h, a( H
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
) a' K- T5 m6 g4 l, ]Incorrect fault finding is often caused by a lack of product knowledge. Many7 Y6 w) e! x% M8 N
contributory items around the engine bay can trick the unsuspecting into believing the; f1 w5 Q1 Q) w8 J* I+ x2 k
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
+ H, b, ^& M0 L- Pdiagnosed before a replacement turbocharger is fitted, the problem still exists!
$ t4 k9 E' s" CWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
& p9 Q* R/ L1 bturbo can be killed in many ways./ }) b( A' I w6 t) {" ]
Foreign object damage results in either the air intake "compressor wheel" or exhaust/ B8 ?: Z: ~4 K+ [ {2 N X& l" d
"turbine" wheel being damaged. The former is often caused by someone accidentally3 C ~; ~* p/ h! Q0 \% U
leaving a nut or other foreign body in the air induction hoses. Please be extremely
F0 k1 B/ x$ `8 B2 @$ Gcareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
5 }' T) c: l; h9 S0 p' kthis may be caused by part of an engine component, such as a piece of valve, exiting
0 n1 G/ e; s$ n7 d7 f+ K1 ~the engine in rather a hurry! In both cases it results in severe turbocharger damage* a2 e( g, `+ n, i& _( l1 @
instantly.! A( s+ I4 U, S( o- O. k% d
Turbochargers are simple in operation, but manufactured to precise tolerances as fine H- L* E- g k2 O. ^2 y
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
7 ~0 ~0 |( N8 ^turbocharger many times, including final assembly. The balancing methods and
# S `6 G( z0 Sprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine# A, }1 x" F8 h$ |' W
tolerances required for today’s high speed turbos. It is now common for5 O: c1 J/ f( q2 n3 U* F: C
turbochargers to spin up to 150,000 rpm +./ ^8 Z9 w6 G( ^! e& `* B
That’s approximately 35 times faster than most diesel engines rev at the red line!! L8 R! v/ p4 i" O+ C( Z" m
Sophisticated machinery and highly trained factory staff ensure that the highest
+ l* e+ Y+ v$ d7 c: kstandards are always maintained.
3 l/ O2 Y) Q1 H: @* h' a, _' D3 G1 qUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are' p6 U- H" I- c" X8 S$ b! Q# @
to always allow the engine to warm-up fully, until the water temperature gauge
$ G& G' }$ H& q* h/ ?! Ireaches normal, before full throttle is used. Try to plan the end of your journey* d! z3 I6 N1 ^' A/ B& i
sympathetically. Don’t use full throttle or allow the engine to labour during the last
+ S; \6 `+ T3 G1 afew miles. This will prevent excessive heat build-up within the turbo when the engine! E: P l3 D% N. x# {
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
4 s3 \% o c' q* {+ p* F" F9 tfew extra seconds to allow the heat to decrease. No need for a timer though, just undo
" g2 l9 N! O0 K. L, Kyour seat belt first and then turn off the engine. Never rev the engine just as the
: H/ Z4 \9 Z; ^, Y0 aignition is turned off. Remember the turbo spins at a far greater speed then the
; r* p4 r( v0 t9 Zengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
5 U1 ~4 t" Y( Vwithin a few seconds. In reality, none of the above traits will cause a turbocharger to
+ p" N; ^$ E: x1 T) R$ R0 r+ f/ W. N; \fail immediately, but repeatedly over a long period, they could reduce the life of your
% s- w0 z0 y% w, ?, [- Fturbocharger.' O, w! s6 c* P' N3 W( q& W+ k5 q
If it becomes necessary to seek advice about a turbocharger or a turbo related( e; c0 g8 z5 ~$ |8 N
problem, always rely on a professional. Berrima Diesel, together with DTS5 b8 {+ Q! f6 e. ~* x6 o4 z
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one# n5 L. f0 i2 S M. @$ v0 L7 G
of the most experienced turbo installation companies in the world. We can advise
9 X P! q# A; g5 i3 ]& B2 i; M6 ^5 ucustomers with turbocharged 4WD’s on a wide variety of questions and issues9 D2 @5 @( {& @. }, U. z d
relating to owning and running a turbo car.
% Z6 }4 C& M6 H) R& x: ]It cannot be stressed too much how important it is, when purchasing turbocharger7 f& H* t7 ]. G/ z
system, always to choose the top brand name -Berrima Diesel. Consider this. As with8 b9 j( O! Q+ t$ u, s: L3 u3 e
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
5 ^' h7 ^( o4 v3 R4 j! V xWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
7 L( C. _) z, E0 hthat your short-term saving may turn out to be a long-term nightmare.7 V, x1 L5 t1 \" b8 C8 i
What is 'Boost'?+ ?8 T N% a3 a$ ^3 F F
Boost is a term used to describe the increase in pressure, provided by the5 ~) k: L9 ~4 L2 L
turbocharger, to the volume of air, entering the engine. This pressure is expressed in! |' S6 A+ {1 g; h; Y6 F0 h& E
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same w1 X. ]5 \$ \7 ?
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa4 ~! z% k: G. W3 a5 }, E: \
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power# {& I7 C8 r. r
output is increased. This pressure increase is called 'boost'.2 S& d; `" Q( F; U3 ?! S" B) X% W
How does fitting a Dynamic Turbosystem effect the power of my
) _+ e! p! c' V, b+ I/ P% l' @, Zvehicle?
5 T, k6 i: |/ n4 v) u. s, vModern 4WD diesel engines, typically produce peak torque (pulling power), at
* Q- @5 \& ?9 ?$ `7 taround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
$ a/ A& \& `1 ^3 {9 U- {) H# p7 cTurbo boost starts at approximately 750 R.P.M. and rises progressively to its- G" E g* s( d! u1 T" d- Y
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
$ u5 T& C. g6 p+ o; zpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,
! M/ u- E, @2 B6 Xat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At* `. H% r/ ]- x7 k0 ]. D, c2 Z
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater& ~: K" D5 u4 N9 X8 a! S0 e; I. @
than the standard vehicle at the same R.P.M." S' H |, O, c! S Z5 t
Can I fit a Dynamic Turbosystem myself and, if not, how long and1 I! [/ _/ Z3 b/ ], h1 H: j3 L% _
what is the cost of having it fitted for me ?
* p- J" _) U- w1 k NWhile most competent mechanics could probably fit a Dynamic Turbosystem,7 s: V5 @5 [- o; _% D& E; Z
tuning requires specialised knowledge. The lack of this knowledge could have
& p! f. X* o- g. N( Z# fserious consequences. In addition, warranty can only be provided on Dynamic6 }% o2 [" }" b8 U
Turbosystems which are installed by authorised facilities.
5 m8 _* r- H8 nThe cost of having the installation performed by Andrew at Berrima Diesel is
1 {4 h- u5 _$ X: aonly about 10% of the total purchase price. This provides a warranted, correctly
# v) X: V& V1 @1 atuned, "no hassle" installation for the customer. All diesel vehicle installation can be
- n, D" h# B' a2 k1 cperformed in one day.$ b7 F- b, S& @ r( }6 y
What creates the most heat? Fuel or turbo boost?9 `& J% F ^5 F& I& U2 _! x
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
! o- t* z* n9 j: I x3 Hrequiring a butterfly are vacuum operated governor pumps) to operate. The more air( P) a7 n) x* B7 |+ u8 |
the better. Add too much fuel to the equation and the exhaust gas temperature8 R3 d6 ~- Y, C5 C& b
rises rapidly.
% @9 }( g2 e9 \6 z2 GWhat type of oil and how often should it be changed ?/ m* G6 \, A9 g+ ]- ~
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
8 u% L! A: ^9 B% B& K- Iengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .; a9 G5 A7 u9 G" r% d4 \
Change oil at intervals recommended by the vehicle manufacturer.
4 ?) ?2 g {! ]$ V% S) p, mHow long does a turbo last ?
$ j p! i% f4 t2 g3 b1 Y; ~8 e% a. mOn average, as long as the engine or longer with regular engine servicing and good
/ L7 F$ j6 N, }quality engine oil." O4 I/ t6 h* |) m& v: }
What is a ‘dump’ valve or ‘blow-off‘ valve ?) |- b9 U5 @! E0 @
A valve which relieves boost-pressure between the compressor outlet and engine as* S2 d+ o' P) q4 {
the throttle is closed (Only required on throttle valve controlled diesels which are; r/ J5 e" c' ~3 B8 l8 g
rarely seen these days). These are commonly fitted to hotted up petrol cars so it {# ]: H; p8 A' V" v+ S
sounds good changing gears among other reasons!
1 y5 `5 f7 i/ D! d- t, L4 tCan I fit a turbo from another 4WD ?
) m8 `2 l* v4 [& K SNo, virtually all turbocharger are different inside, even if they appear similar on the( P* M% Y% b( `% o3 n4 h0 h
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
( l$ ^+ y) q% T+ U: Nspecification.
2 d4 n8 Y0 m8 \$ ^Should I leave my engine ‘ticking over’ before it is turned off ?
9 O. a/ Z b8 q" l7 @. q, _. I; }Not for normal every day driving, but still worthwhile if the engine has been under
+ K% E8 X4 |: }load or raced before being turned off. e.g. Towing a caravan or after climbing a long+ Y9 U& i: f# q, q* r( a& R
incline.( i" C, {2 }# k& T. o
Why is it important to balance a turbocharger ?
+ k* f/ g8 I+ q. EWithout highly accurate balancing, vibration will create a whining noise, reduce
( ~& j7 a; J8 V, ` pturbo bearing life and reduce turbo efficiency.6 ^% G3 t) s; p' Y
How much boost does my turbo produce?; k& d- ]7 I- J4 W* C6 k- e y a2 d
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
6 P1 t) v5 ?) o& `6 FIntercooler turbocharged engines running upwards of 13PSI. ]/ Z' R7 w: f h
How many psi in one bar ?
* ~, Y( |5 g; i/ q- h14.7 psi = 1 bar.- [0 ~. {+ A6 p9 |' p
Are all actuators the same ?2 x' R4 p9 L, Z' _2 g
No, each has a different opening pressure and rate.
/ c7 J9 }5 [! Y% X$ \2 {Oil in the turbo inlet pipe - Should I be concerned ?
2 U6 u# r( U v E; ]A small amount of oil usually exists, drawn in from the engine's crankcase breather
$ w+ v9 L) M( M$ p# T, D3 osystem. High engine wear will increase the amount of oil found, and will require
5 l5 d2 N6 q6 Q" m3 `" X7 [# G: Yfurther engine tests (not turbo).
; d! e2 d( _+ S& D# [2 P# IShould a turbo be serviced ?: q) x9 d( S- N0 ?" Q
No specific turbo servicing is required, but regular quality engine servicing is needed
, {* r$ X. L8 o1 p% sto reduce the chance of turbocharger problems.# j1 {" @8 i' L
What is a water-cooled turbo ?3 Y; }( ?; A- }8 T8 M2 a4 d# l& K& n
The central part of the turbo, housing the bearings, is surrounded by a water jacket
" W5 a# d+ w* K2 o# r1 y$ Qthrough which the engine's water coolant is passed. This water continues to circulate
; W5 S. J7 _" t7 V$ vafter the engine is turned off, cooling the turbo, and preventing heat soak., j5 K4 i# l+ S5 |. M! U9 z
Do I need to up grade my exhaust ?' L9 `4 _$ @2 c6 Q$ V) C
Generally not. Our systems are designed to run utilising as much genuine component
1 L. D, h. x4 h# jas possible. Some systems on the market promote exhaust change as it is required by9 o: L, ^5 B- @) k3 v4 | T$ j
that particular turbo. Doing so usually picks up more noise than performance.
% u% X5 D: J x! X; a$ KHow noisy should a turbo be ?3 x, l9 i0 e: D r( u' Y
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
/ h: }2 L" m; R! [- Pnoise.* O/ L$ y$ @/ d" r
What is an intercooler ?
6 C; M g1 T0 U: L: KA special type of radiator which cools air before it enters the engine. As a turbo
" o) j. w! f9 W/ e) ^compresses air, the air heats up. Power can be increased if the air entering the engine
, R! `% R" j+ C0 C( Uis cooler. The cooler air is more dense meaning that more fuel can be injected for
. ?# P D( N4 D. e1 Bmore power.
* a9 U7 P B) c, _4 sWill my vehicle run ‘cooler’ with an intercooler ?
6 g$ |$ S6 e0 ]+ WTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles
9 A: u# j' f7 erunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot$ H2 ]2 ?8 |5 D* O6 W
air passes out of the Intercooler over the air conditioning condenser and finally the
% I3 x/ B; G% c3 g, u" {radiator. The poor old radiator is left with scraps of extremely hot air and then is4 Y4 u N5 {3 g- j& \5 O# B' A
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
: L4 c) P+ S \' ? Ican often be the catalyst for engine heat problems.
4 V: a! p' J) H' IWhat will happen to my fuel consumption?
& S7 b& [8 Z6 i: q1 c" ?% G9 vMore power generally means more fuel. With a diesel turbo system, fuel consumption+ k5 i- h) V3 ]+ V( Y. C
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
