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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. & Q" k9 }( E0 y5 W* D2 d
8 r# a- l' l- v
' t# R7 ?( p) P3 ]Tech Sheet4 J2 a- {4 ~6 d; R
‘Frequently Asked’
( z% w4 ?# m: G' a‘Turbo Questions’(In no particular order)7 I. B6 @6 h. [5 E, ?2 X- p
Your turbocharger is engineered to match the specific requirements of the engine it is
n! j; l3 h- t3 B) O% Vfitted to. Each is dependent on the other to maintain optimum performance. Don't" h4 r' b! N" z' j1 B( w/ Y
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The" `5 A7 m+ a) V* X* F/ `9 n
turbo's requirements are similar to the engine’s. It is, therefore, essential that6 ~' w: S+ P! H
scheduled servicing, using good quality oils and parts, is central to caring for your M# `" [- E! @5 m2 ?
turbo.
$ ?3 Z; \' ^, H4 |' ], i- XIn many instances Berrima Diesel receive turbochargers which have been
7 Q9 u5 E- T$ [0 q; B/ E, Jmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.# B3 B6 _+ K; ?2 {, J) q$ ?
Incorrect fault finding is often caused by a lack of product knowledge. Many
; h, M( M) M3 K0 econtributory items around the engine bay can trick the unsuspecting into believing the
% _% S9 z% n( N4 _, V9 pturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
' W& A% K0 e: H2 i1 C: cdiagnosed before a replacement turbocharger is fitted, the problem still exists!% Y1 q7 {0 M8 Y' I& w Q' L
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
2 ^& A# s$ J2 c/ n6 @/ K2 \turbo can be killed in many ways.) \3 b/ k4 ]7 f3 _
Foreign object damage results in either the air intake "compressor wheel" or exhaust
; y2 s. _$ m- z9 X& Y# c"turbine" wheel being damaged. The former is often caused by someone accidentally( N/ S, m! ]! F3 h
leaving a nut or other foreign body in the air induction hoses. Please be extremely
8 F2 E8 Y, a w$ p, w9 D. Icareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
& c2 h+ K# E$ B( Fthis may be caused by part of an engine component, such as a piece of valve, exiting9 S0 P; c( H5 m
the engine in rather a hurry! In both cases it results in severe turbocharger damage
: r: x) R9 |% tinstantly.9 S9 o/ P" C3 }; ~7 O
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
8 J! \. z" `2 s' T2 y. d# Vas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
b3 o. v% L6 g4 Q0 b% U0 t8 s( sturbocharger many times, including final assembly. The balancing methods and
( B( P; ?% M/ V4 eprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine( e S+ U+ P' ?0 |" g# a6 Y4 [% v
tolerances required for today’s high speed turbos. It is now common for
' H- Y) I& k, G+ J8 C6 h0 e* xturbochargers to spin up to 150,000 rpm +.
/ f4 U' c0 t. `4 e0 mThat’s approximately 35 times faster than most diesel engines rev at the red line!
6 j# c5 ], a# C- {# v1 XSophisticated machinery and highly trained factory staff ensure that the highest4 _; b& \- ^' s* s: j; l6 ]
standards are always maintained.' t% {1 i. @0 j2 x, L
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are# [. j8 R5 e& H; _7 b* Q3 N
to always allow the engine to warm-up fully, until the water temperature gauge% K: G6 U1 c/ c* V' E X# B
reaches normal, before full throttle is used. Try to plan the end of your journey
! T1 i7 Z5 {; s0 G" t |sympathetically. Don’t use full throttle or allow the engine to labour during the last6 {* z0 C% `% g4 M
few miles. This will prevent excessive heat build-up within the turbo when the engine4 P0 V* h6 [8 l
is turned off. Also, when coming to a standstill, try to leave the engine idling for a1 G% ~6 L+ a) Z0 e% ?
few extra seconds to allow the heat to decrease. No need for a timer though, just undo3 y0 e5 w% J/ G
your seat belt first and then turn off the engine. Never rev the engine just as the
# e9 v6 Y5 C5 P# Uignition is turned off. Remember the turbo spins at a far greater speed then the
% o7 K8 H) x) Z: y' m, R6 m' k0 `engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
$ F! Y( b2 }, s. b# X" m7 y/ qwithin a few seconds. In reality, none of the above traits will cause a turbocharger to
" ~" P$ u# Y7 E9 f2 r* K( {fail immediately, but repeatedly over a long period, they could reduce the life of your
9 y3 f5 {- h6 V% C( r; I8 Yturbocharger.$ x9 j( r! g/ C% I, m" w7 v1 {
If it becomes necessary to seek advice about a turbocharger or a turbo related7 ]1 O- K0 r5 p: K5 ~: t
problem, always rely on a professional. Berrima Diesel, together with DTS
' J9 \0 u( g; I% ]" z. H- H) Bturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one5 v6 _1 Z/ L) X; w1 C7 K0 ^
of the most experienced turbo installation companies in the world. We can advise' I& r) H' a5 [$ G
customers with turbocharged 4WD’s on a wide variety of questions and issues
) p& g3 l3 J1 U8 s# d- prelating to owning and running a turbo car.
/ N+ @# o: H' `+ x/ SIt cannot be stressed too much how important it is, when purchasing turbocharger
( d' X0 V/ _( o# z1 c7 H7 ^" `/ K. hsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
2 t* ^9 S4 A& H( ~9 wso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
9 j+ q( l2 ]) v9 _Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk* e" B; f- r, L5 k) V6 H6 n# s
that your short-term saving may turn out to be a long-term nightmare.- P* K! @$ q' l* o2 J
What is 'Boost'?
O9 l& m' Y+ e: HBoost is a term used to describe the increase in pressure, provided by the& M0 {, @: ~( O3 I
turbocharger, to the volume of air, entering the engine. This pressure is expressed in
2 W& {# U3 @. M7 a3 Aa number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same+ h! s% U a' n' h$ c
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa/ k4 d: o( H3 G0 d- Q: D
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power: a% T" J* K" P( j: a
output is increased. This pressure increase is called 'boost'.& ~5 K# m0 T" M0 T! h
How does fitting a Dynamic Turbosystem effect the power of my
; F, P, L' o( V% t5 M0 [( wvehicle?
3 f# G2 _+ J& C$ D K3 zModern 4WD diesel engines, typically produce peak torque (pulling power), at
( {4 Y; c0 c: c+ o; Qaround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M./ j. |& @% N3 Z. c' ]( |
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its* b9 ?; y+ \! w2 ]" _8 Z4 r
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this. \/ E" H, {" V! U4 k8 f0 Y
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
+ X. e5 d3 k2 _# P1 }$ m2 Bat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
" N' |+ I2 W3 U' t% j8 c* ino point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater5 a: w- g. m" |
than the standard vehicle at the same R.P.M.: W% `( @: E, a0 T4 u% C
Can I fit a Dynamic Turbosystem myself and, if not, how long and
' h2 R j5 ?; M1 \0 Swhat is the cost of having it fitted for me ?
$ U5 u& c1 O) s1 u6 PWhile most competent mechanics could probably fit a Dynamic Turbosystem,
# Z9 P: |3 M- g4 U2 j- otuning requires specialised knowledge. The lack of this knowledge could have& f; V. M$ _" ~% g! v% t; I
serious consequences. In addition, warranty can only be provided on Dynamic
9 \; u8 q9 Q9 e3 s5 b( GTurbosystems which are installed by authorised facilities.. j# b3 W: h7 W. W/ k
The cost of having the installation performed by Andrew at Berrima Diesel is
e [' X* c3 P: ~: v" D& j5 tonly about 10% of the total purchase price. This provides a warranted, correctly
8 Z" m3 E3 [9 Y( h5 Ituned, "no hassle" installation for the customer. All diesel vehicle installation can be" q3 O8 g9 [0 w4 d% U. p
performed in one day.
& ~' u7 n+ K2 ^9 _. E* aWhat creates the most heat? Fuel or turbo boost?7 j9 X! h) x; s3 Y' ^( J' {
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
& S ?9 @5 _& L1 frequiring a butterfly are vacuum operated governor pumps) to operate. The more air
" u u1 v1 ^& i0 W/ k5 [8 {0 `the better. Add too much fuel to the equation and the exhaust gas temperature
1 v% g) u2 @, s2 Z4 mrises rapidly.* L, r& W7 ~' ]7 v( ?! u
What type of oil and how often should it be changed ?
" [4 j- B! i& b# _! STurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
0 |; l- \! P2 D1 H1 p7 x9 z9 y1 @engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .9 X: K$ y/ ] g, _
Change oil at intervals recommended by the vehicle manufacturer.
$ n1 K) A/ b+ i8 K! QHow long does a turbo last ?
& e; ^+ \ j7 v. fOn average, as long as the engine or longer with regular engine servicing and good" ?* I" n/ i/ Y! Y0 l) t
quality engine oil.
! I' H9 }/ C4 Y5 vWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
. ~- ~6 n- \ qA valve which relieves boost-pressure between the compressor outlet and engine as: g- @+ x3 n2 N
the throttle is closed (Only required on throttle valve controlled diesels which are
6 i) \' F3 h u' C n" E hrarely seen these days). These are commonly fitted to hotted up petrol cars so it
1 m6 p. ^/ Z2 g9 Rsounds good changing gears among other reasons!& m$ j! A5 Y: E: B
Can I fit a turbo from another 4WD ?. e* T. E1 q! B! ^
No, virtually all turbocharger are different inside, even if they appear similar on the
) N" h% x+ R |4 Q7 Joutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the3 k( H3 e6 `: I7 q
specification.( N, n9 a, v0 Y& x8 ~
Should I leave my engine ‘ticking over’ before it is turned off ?
( D5 } o$ {; Q% V$ ?9 T, [3 L. }Not for normal every day driving, but still worthwhile if the engine has been under" Y* }# s, {6 I6 D" c* \ b
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
2 j3 L0 m2 l0 Q& oincline.
: S, a0 h/ H: B# ?* X/ }Why is it important to balance a turbocharger ?9 l' B( ~& f0 d' }( k
Without highly accurate balancing, vibration will create a whining noise, reduce
4 o" Y( j2 y2 d+ d2 jturbo bearing life and reduce turbo efficiency.9 I; Q' X( C: I+ k7 l" o
How much boost does my turbo produce?
9 Q& u4 c: |& Y) o9 |& v$ u. MCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
, E# s" v4 Z! jIntercooler turbocharged engines running upwards of 13PSI.
! M1 c1 G" S. k' p) \* ]How many psi in one bar ?. Z+ }# j& A- |/ C' ~
14.7 psi = 1 bar.8 w# X! J7 T9 d5 S6 x
Are all actuators the same ?
' `. p: y7 B3 l. G8 ^* {$ O8 HNo, each has a different opening pressure and rate.
7 ~2 x6 @4 ~( y% NOil in the turbo inlet pipe - Should I be concerned ? C; P( ?4 v/ P
A small amount of oil usually exists, drawn in from the engine's crankcase breather- @) e9 L3 T: a7 f* I- G4 k
system. High engine wear will increase the amount of oil found, and will require5 L+ X% f* Q# F6 R- l7 a! ^
further engine tests (not turbo).
1 k# f) P$ q7 ?, ]- d& i0 U4 `Should a turbo be serviced ?
2 I7 N! m% Q& `5 bNo specific turbo servicing is required, but regular quality engine servicing is needed
" T* n( C) A! Vto reduce the chance of turbocharger problems.
- n- g% L h5 r' ~8 TWhat is a water-cooled turbo ?) l" O* S1 {7 S$ q0 r) l3 ]
The central part of the turbo, housing the bearings, is surrounded by a water jacket$ Y7 {1 U3 Y! N3 F8 X
through which the engine's water coolant is passed. This water continues to circulate
, k& T! F7 {! R9 p$ Nafter the engine is turned off, cooling the turbo, and preventing heat soak.# i9 ^4 p& d! E7 D6 p* o
Do I need to up grade my exhaust ?7 e6 l! f1 g! [3 D# D1 Q7 ~
Generally not. Our systems are designed to run utilising as much genuine component$ Y1 t+ G% Z) a2 d$ w& H- m7 r
as possible. Some systems on the market promote exhaust change as it is required by
' y2 y( j! Z f" P1 q1 {that particular turbo. Doing so usually picks up more noise than performance.
* ~: d9 e. }+ y8 e8 {How noisy should a turbo be ?
8 D6 L! t5 j8 \" d0 w8 kOnly an unbalanced, worn out or damaged turbo will produce any significant turbo0 C1 r) E/ ~, z! _; M
noise.
a1 N0 ^5 Y. S* ~1 t6 z1 uWhat is an intercooler ?
; O0 a0 p8 |1 D- R, i6 B# A! EA special type of radiator which cools air before it enters the engine. As a turbo1 y9 @ ~( R2 E# r
compresses air, the air heats up. Power can be increased if the air entering the engine
0 Y7 ~/ N6 o2 A( P7 M1 |is cooler. The cooler air is more dense meaning that more fuel can be injected for
/ w1 O; A, w% h# Zmore power.
2 C7 U/ V; B. y0 O5 bWill my vehicle run ‘cooler’ with an intercooler ?8 ~5 u2 l$ j/ k% G2 P& g' E$ \
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles8 {* G1 ~7 U, D" D8 P, h/ G0 ~
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot6 r# s7 j3 `& ~/ @6 n" r" l" V
air passes out of the Intercooler over the air conditioning condenser and finally the2 o5 k, p* r5 |" w- y
radiator. The poor old radiator is left with scraps of extremely hot air and then is
G* p6 T. ^4 f! Eexpected to cool the engine. We don’t advise fitting them as hot Australian conditions+ H& [: Z5 ?- B. x( E4 H
can often be the catalyst for engine heat problems.7 U1 H* Y6 \1 [5 U% u/ w# R
What will happen to my fuel consumption?
7 o/ w" ?% q mMore power generally means more fuel. With a diesel turbo system, fuel consumption
j4 P0 d4 M9 U& G" ^$ ustays 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
