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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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$ U) S$ ^" y* u& g3 a- c( a& NTech Sheet; ~$ ?9 C# \; w! {9 L9 {( P
‘Frequently Asked’9 H& G! f/ }' z0 s7 H+ [; [
‘Turbo Questions’(In no particular order)1 Y7 B2 `1 i' E) i
Your turbocharger is engineered to match the specific requirements of the engine it is
6 {% ~$ h1 m' W$ r( Q8 A2 o+ Ofitted to. Each is dependent on the other to maintain optimum performance. Don't7 L* H, n* m5 J
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
& ]) H. n4 q/ {$ x/ eturbo's requirements are similar to the engine’s. It is, therefore, essential that
+ F0 x. J" N' ]5 [+ L* a1 Bscheduled servicing, using good quality oils and parts, is central to caring for your
( E" P. M- B+ m- n. z' nturbo.
& f0 y% I& `! i7 K rIn many instances Berrima Diesel receive turbochargers which have been
7 w! c+ m) v$ v- Z8 T- A6 kmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
: v3 j' h4 E0 y* n Q$ |Incorrect fault finding is often caused by a lack of product knowledge. Many
" V+ V; {6 c5 Z R% ]) ~( u: wcontributory items around the engine bay can trick the unsuspecting into believing the& F2 z, H' A* X( f0 t, c J
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
7 B7 [: J0 o9 W2 ~! N9 o: Wdiagnosed before a replacement turbocharger is fitted, the problem still exists!
2 E4 A, G, Y/ ?& k9 fWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A2 u- M) }$ `7 ~% u& w
turbo can be killed in many ways.9 w3 y$ a2 a: w }% d$ z, j
Foreign object damage results in either the air intake "compressor wheel" or exhaust3 t2 ^( B" s. O5 U" q
"turbine" wheel being damaged. The former is often caused by someone accidentally
) T2 J* Z+ ]* h9 s( [9 B" h, sleaving a nut or other foreign body in the air induction hoses. Please be extremely5 h: U2 c5 N7 p7 b* @
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,+ p% s) {7 Z* P: k% U r
this may be caused by part of an engine component, such as a piece of valve, exiting$ g# f. s: B4 w
the engine in rather a hurry! In both cases it results in severe turbocharger damage
& u, p! g+ o: E& t# Finstantly.
1 w; z: f3 a, C4 o* D# WTurbochargers are simple in operation, but manufactured to precise tolerances as fine
% s/ F9 u% A. F& y) W' }as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single" R3 m# X' H: ?0 t
turbocharger many times, including final assembly. The balancing methods and8 o& U& Z3 _) q& j1 n
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
" P5 z4 v# W/ k% K9 N# P/ ^ ptolerances required for today’s high speed turbos. It is now common for
6 U9 {" @# N; o# E3 b" ^0 V/ a, Wturbochargers to spin up to 150,000 rpm +.
% q8 k8 h0 i7 n+ Z kThat’s approximately 35 times faster than most diesel engines rev at the red line!
: ?' i, \! C5 Q3 j* R' \' aSophisticated machinery and highly trained factory staff ensure that the highest
# c3 G3 Q7 P' x5 e. Sstandards are always maintained.
! \# x$ k. z" ]' b" J8 x+ }Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
# _3 S7 m/ t# |( H+ T6 H/ Cto always allow the engine to warm-up fully, until the water temperature gauge
3 P* f* @8 W9 p; Xreaches normal, before full throttle is used. Try to plan the end of your journey$ r) H& }) B! _
sympathetically. Don’t use full throttle or allow the engine to labour during the last+ H9 h0 _1 J6 ?2 j' F$ S; _4 V& s, F
few miles. This will prevent excessive heat build-up within the turbo when the engine1 }# x1 q: D' N0 G; f4 a
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
1 e9 n/ i {! ^* i0 Ufew extra seconds to allow the heat to decrease. No need for a timer though, just undo, J5 j( z- R- P* [$ j* b0 T
your seat belt first and then turn off the engine. Never rev the engine just as the) J( ~& v* \! S" a( b, B' w
ignition is turned off. Remember the turbo spins at a far greater speed then the
" \0 r# f! {5 {! L9 b, E4 lengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases- `1 Z5 x% ~, `8 y( i9 b
within a few seconds. In reality, none of the above traits will cause a turbocharger to- u: t2 g+ t$ p; G7 O7 x
fail immediately, but repeatedly over a long period, they could reduce the life of your
, v( _$ _: s" z1 Xturbocharger.
6 `& z0 D W( W B% Y$ ]If it becomes necessary to seek advice about a turbocharger or a turbo related9 K4 L% @" m6 ^2 ?
problem, always rely on a professional. Berrima Diesel, together with DTS
* C& O1 S9 ?: Sturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
' C/ c; I0 l- D& y7 Hof the most experienced turbo installation companies in the world. We can advise( P) u# s' x- ?. R! s, s. H
customers with turbocharged 4WD’s on a wide variety of questions and issues% \! U2 |% @) x4 R
relating to owning and running a turbo car.
8 m U7 K0 U1 R% ZIt cannot be stressed too much how important it is, when purchasing turbocharger1 T) z5 U5 x6 G
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
! K0 {' o$ c, aso many things in life, quality costs, and there are sometimes cheaper turbos for sale.8 p# o6 I5 ^0 q
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
4 Y( c' d2 o Othat your short-term saving may turn out to be a long-term nightmare.
: ^6 q* ?5 A9 z1 d* f, f6 C- bWhat is 'Boost'?$ r& C. f8 p5 {* _
Boost is a term used to describe the increase in pressure, provided by the
x9 B7 v0 c7 n7 B2 i4 I3 Iturbocharger, to the volume of air, entering the engine. This pressure is expressed in
6 P% a+ c+ @* [# h$ U, Da number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same9 f* s5 s1 V, ~. N* B) ]! B p
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
" _2 h) W+ \% F/ f* M14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
$ E0 O' H+ h# n7 m2 I& Goutput is increased. This pressure increase is called 'boost'.
\; _+ |* t4 G9 B( c3 uHow does fitting a Dynamic Turbosystem effect the power of my5 {2 _; u0 l- v3 o. e+ B( x
vehicle?
4 X( D' A7 V0 W& U8 ]- o# rModern 4WD diesel engines, typically produce peak torque (pulling power), at
( Y- X* W' U `: m$ naround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.0 l. m. Y( O( }6 E1 v
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its: P9 Z: q0 \- |; t9 a- `
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this& w! ]+ O( P( g: L# p# ^; t
point, the percentage torque increase of a correctly tuned installation is approx. 40%,9 v; ~# d k9 q6 f# Z! `
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
; n5 p2 i w! [- qno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater/ T, N. }& X8 V+ _& `+ U
than the standard vehicle at the same R.P.M.* t( \, o, T$ N6 B
Can I fit a Dynamic Turbosystem myself and, if not, how long and
5 |6 i. P( L2 iwhat is the cost of having it fitted for me ?* H/ g) m; h5 G j* `5 v
While most competent mechanics could probably fit a Dynamic Turbosystem,
4 ]0 n8 m0 q e' _/ C2 gtuning requires specialised knowledge. The lack of this knowledge could have7 v% B$ ^2 a& [5 Q
serious consequences. In addition, warranty can only be provided on Dynamic
/ Y# w- {' k7 q" kTurbosystems which are installed by authorised facilities./ J; Q' Y4 S. B
The cost of having the installation performed by Andrew at Berrima Diesel is5 {4 p j5 t' l! Y' S3 o! M
only about 10% of the total purchase price. This provides a warranted, correctly9 I; f) K5 l7 B x
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
0 s, D7 a1 v: f: Vperformed in one day.
! }- A, C, V; u9 H4 VWhat creates the most heat? Fuel or turbo boost?
( |! F! Y' T- e! U# |% s, r$ v) D6 `Diesels do not need an air control (eg. manifold butterfly valve. The only ones* W+ W7 K- v0 W# p
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
( }1 r1 v3 k; R) j- Bthe better. Add too much fuel to the equation and the exhaust gas temperature
2 i9 k( A6 o; h& urises rapidly.
3 D& @2 W* E. t+ KWhat type of oil and how often should it be changed ?
4 s Y! x8 Y6 d pTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
8 ?) _& V! ]* [ ^( x7 Rengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
* B# k s* ?, b& L( gChange oil at intervals recommended by the vehicle manufacturer., o# B4 d. j) l2 ]3 k
How long does a turbo last ?
$ J- H) b4 w7 j, k, Z* zOn average, as long as the engine or longer with regular engine servicing and good
( p& r) n+ `! v' W- D; `0 Gquality engine oil.3 W. _5 r' Q/ b
What is a ‘dump’ valve or ‘blow-off‘ valve ?* l, T1 G- g. Q3 U, w9 K
A valve which relieves boost-pressure between the compressor outlet and engine as
& l3 H5 |9 I% @, L( pthe throttle is closed (Only required on throttle valve controlled diesels which are3 {# J3 o8 l( r4 W, N
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
: H% o( @4 r, u# P2 Asounds good changing gears among other reasons!: z; J$ V9 W* ]6 t6 l( v2 | m! D- J5 q
Can I fit a turbo from another 4WD ?
7 X3 Q) G( N: X/ e+ c$ JNo, virtually all turbocharger are different inside, even if they appear similar on the" _# l$ P+ I- S' [
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the" G& w" l s9 z, p; r9 z
specification.1 L/ h$ e9 e/ F0 ?0 L9 |5 w
Should I leave my engine ‘ticking over’ before it is turned off ?
1 X% F% `8 j6 s! b8 g# oNot for normal every day driving, but still worthwhile if the engine has been under
& h$ R; \/ I& z7 n: uload or raced before being turned off. e.g. Towing a caravan or after climbing a long
- `, S5 Q; r! f4 i# R1 O0 B0 Xincline.
. [3 K9 P/ N( l; L zWhy is it important to balance a turbocharger ?5 ~1 _4 x* W- l& t7 y7 q
Without highly accurate balancing, vibration will create a whining noise, reduce$ ?# M1 k7 d* R7 U# T4 _7 b( T5 l6 `
turbo bearing life and reduce turbo efficiency." C/ g/ }7 D( u, {/ G$ D
How much boost does my turbo produce?$ u% Z- p; ~3 v8 t1 R( u
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
% u' I3 ]7 P/ V4 l6 N% v2 ?9 hIntercooler turbocharged engines running upwards of 13PSI.7 A% H7 g5 a2 q0 c
How many psi in one bar ?
1 c- X( T6 ]( j5 w14.7 psi = 1 bar.8 O7 G$ T; y0 E) F/ a# s* i1 m% B' D
Are all actuators the same ?
9 P. c2 G" Y! `& E. q9 _. l0 JNo, each has a different opening pressure and rate.; k6 l( E1 o/ Z# T6 d4 g% ]9 A2 R k. {
Oil in the turbo inlet pipe - Should I be concerned ?3 P6 a# B Z% i+ S2 R3 I4 c" Z" g; q5 `
A small amount of oil usually exists, drawn in from the engine's crankcase breather
& |( c1 ~0 A( msystem. High engine wear will increase the amount of oil found, and will require4 K" s' M6 y1 |0 Q7 o$ |
further engine tests (not turbo).- s! \8 e% H; q- G5 L
Should a turbo be serviced ? }6 \" f# r; z
No specific turbo servicing is required, but regular quality engine servicing is needed
, Y+ r; e6 w5 xto reduce the chance of turbocharger problems.9 @9 N9 E' U5 C4 g0 E
What is a water-cooled turbo ?: Q1 M4 t9 M) k* w7 ^7 D7 s
The central part of the turbo, housing the bearings, is surrounded by a water jacket
8 J2 l _4 P" K K& Mthrough which the engine's water coolant is passed. This water continues to circulate8 ^# w; F2 ~, \/ g
after the engine is turned off, cooling the turbo, and preventing heat soak.
0 p3 c' B' g3 w) _8 `: {7 RDo I need to up grade my exhaust ?" ~. M" J. Q" y
Generally not. Our systems are designed to run utilising as much genuine component' `# W9 |) p f+ _% t
as possible. Some systems on the market promote exhaust change as it is required by' d# @3 |6 d2 U
that particular turbo. Doing so usually picks up more noise than performance.
5 J7 w' M" Q) I7 q8 a- p5 z4 ]How noisy should a turbo be ?" w. {' I/ `/ t$ O, }8 K
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
6 [+ z+ A; a, qnoise.
0 Y' \% s$ R8 s/ _; c' ?; K( v9 IWhat is an intercooler ?
4 z! Y. [9 y0 H' ZA special type of radiator which cools air before it enters the engine. As a turbo
6 r: H/ O* n% Z' m. R7 ^& zcompresses air, the air heats up. Power can be increased if the air entering the engine
/ N! ?7 `0 m& L/ yis cooler. The cooler air is more dense meaning that more fuel can be injected for" H3 S% x! F! L5 L! F4 Q+ ]% c
more power., D7 S/ {1 ^9 u& e4 B% W
Will my vehicle run ‘cooler’ with an intercooler ?8 Q: x8 @2 W+ m- e0 C
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles- p; a% j- j6 R/ H
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot2 e: J$ F0 p H
air passes out of the Intercooler over the air conditioning condenser and finally the+ c' [' R# h) ? L8 \) l: t
radiator. The poor old radiator is left with scraps of extremely hot air and then is B% D% Z' _2 a, {0 r
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
2 c0 e8 U. a& l5 K6 L& l. J; [/ wcan often be the catalyst for engine heat problems.3 l9 f3 X' }8 y* R$ l% S
What will happen to my fuel consumption?
+ I; c% g" }/ YMore power generally means more fuel. With a diesel turbo system, fuel consumption, u5 ?8 Z! u& e9 T9 B2 M8 v
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
