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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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5 C, n4 z9 a9 i! uTech Sheet k. U9 ^5 _. `- H8 O$ Q/ Y# J' |
‘Frequently Asked’/ w6 R7 n$ o3 y2 n$ p5 M' p
‘Turbo Questions’(In no particular order), W0 M9 }# i6 ?
Your turbocharger is engineered to match the specific requirements of the engine it is
$ R2 ~) L6 a% @fitted to. Each is dependent on the other to maintain optimum performance. Don't1 H7 i9 ^& t; y' T( h. i D
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The4 ^. K+ s. X2 [
turbo's requirements are similar to the engine’s. It is, therefore, essential that
3 J' }0 j, c. @ }$ j( xscheduled servicing, using good quality oils and parts, is central to caring for your/ F' e3 z& n0 F; a
turbo.* i" C. A g2 T& @
In many instances Berrima Diesel receive turbochargers which have been+ @* c* |, _# c% e
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
' X( N* |) U0 R) KIncorrect fault finding is often caused by a lack of product knowledge. Many3 o O, l% ]! M, w" M9 i* ]1 g
contributory items around the engine bay can trick the unsuspecting into believing the3 S% g# y9 w: f. {
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not8 T0 G. K" m0 T) X
diagnosed before a replacement turbocharger is fitted, the problem still exists!+ ?; a3 r( N; B n2 k9 ^
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A; S$ [' j' [/ b% e3 v( U
turbo can be killed in many ways.
$ i& ~( {1 i2 P/ c& q" eForeign object damage results in either the air intake "compressor wheel" or exhaust
% T! x* w" v6 o" \& @7 P"turbine" wheel being damaged. The former is often caused by someone accidentally
1 b7 d7 w: I! y. g8 d2 |& z2 mleaving a nut or other foreign body in the air induction hoses. Please be extremely
; T6 X# _0 z7 h! C9 qcareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
) l/ n. l* |" i4 fthis may be caused by part of an engine component, such as a piece of valve, exiting
% s. q w! U4 ]0 Q, M( gthe engine in rather a hurry! In both cases it results in severe turbocharger damage4 L {( n; @# y1 }% v; W& ]
instantly./ X, M7 i1 V+ ]( S% ?, E$ t
Turbochargers are simple in operation, but manufactured to precise tolerances as fine/ d! Z( @# u9 V. {. T
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
2 T. j' D7 ?* h9 U8 x5 Tturbocharger many times, including final assembly. The balancing methods and6 J4 n* F! Y0 O0 F2 d
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
( g% G) b$ g+ q4 p; ]* w1 stolerances required for today’s high speed turbos. It is now common for7 y' j ]* \; ?7 @8 T2 ~
turbochargers to spin up to 150,000 rpm +.1 _' \/ x% o0 N3 o
That’s approximately 35 times faster than most diesel engines rev at the red line!; p) f7 G# Q% T7 R, c' m" g6 J0 t
Sophisticated machinery and highly trained factory staff ensure that the highest5 C/ h4 h: N( z. Q5 {) y/ T( q
standards are always maintained.
- e4 {4 k% l1 i& V# cUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are- P9 W; }8 d% E; X5 u7 S9 g
to always allow the engine to warm-up fully, until the water temperature gauge
6 x, S. }4 S0 l8 Dreaches normal, before full throttle is used. Try to plan the end of your journey
: P! j( S: X6 I, |sympathetically. Don’t use full throttle or allow the engine to labour during the last
# W" s& N7 a: E% h' `few miles. This will prevent excessive heat build-up within the turbo when the engine$ y$ |0 r5 c9 }% O9 F
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
/ b( b4 n/ P3 f7 |. `; d: Rfew extra seconds to allow the heat to decrease. No need for a timer though, just undo- R6 F6 _; e' J" o, {
your seat belt first and then turn off the engine. Never rev the engine just as the& g0 g0 h& f$ [
ignition is turned off. Remember the turbo spins at a far greater speed then the
8 }7 a9 q/ m5 E8 n7 w. K+ dengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
: O- w/ O, D8 b: O4 e- Bwithin a few seconds. In reality, none of the above traits will cause a turbocharger to
" m% Y5 ~* Q t) K: h' F2 V3 Ofail immediately, but repeatedly over a long period, they could reduce the life of your7 {% H2 y" o8 R
turbocharger. j$ g; _4 z0 l; A5 Z% M
If it becomes necessary to seek advice about a turbocharger or a turbo related5 `" f& {% W- F; e7 i0 T
problem, always rely on a professional. Berrima Diesel, together with DTS
/ c [+ [: N& n+ Q; r. _+ [turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
" g* T' G( g6 z6 O Fof the most experienced turbo installation companies in the world. We can advise) A6 t- A1 o; @( d0 S; v
customers with turbocharged 4WD’s on a wide variety of questions and issues
9 d4 g' t* K1 q8 }: S' @. f& h: frelating to owning and running a turbo car.
- N1 p: o! P6 i6 _6 _. BIt cannot be stressed too much how important it is, when purchasing turbocharger/ {5 Y/ }1 V0 L* k
system, always to choose the top brand name -Berrima Diesel. Consider this. As with- }3 Y7 x5 J L
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
) v9 X. D3 r/ b6 ^4 L1 jWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
2 e( R* B6 j$ {" l7 Zthat your short-term saving may turn out to be a long-term nightmare.7 a) S7 f7 ~" M8 c
What is 'Boost'?
, b! `: G2 C# uBoost is a term used to describe the increase in pressure, provided by the9 b4 |$ i5 F5 V# h
turbocharger, to the volume of air, entering the engine. This pressure is expressed in; P) F2 V8 E) N0 Z* K
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
' F1 H: ^/ |% O, jthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa% h2 g9 E2 M4 {( f' Q! i4 B- X
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power5 O& Z7 Q& @ P, \- n
output is increased. This pressure increase is called 'boost'.8 U2 D! Y! P( T8 r0 y
How does fitting a Dynamic Turbosystem effect the power of my
) L) @9 j4 I6 A5 { j! N/ Zvehicle?" V* w7 r6 v( Y4 d
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
% G3 \% u& B8 Laround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
! U! j3 H8 u2 S2 W pTurbo boost starts at approximately 750 R.P.M. and rises progressively to its: s" y3 ~0 b+ V' _" H
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
, F' T" z( T, R8 l Upoint, the percentage torque increase of a correctly tuned installation is approx. 40%,
9 |$ {* [ F8 ?8 Y& V m3 jat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At i1 y" Q* T+ b' C+ w3 k; Y0 V" @
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
5 I; z2 ~/ Q) G7 P- [" xthan the standard vehicle at the same R.P.M.# _! U4 O# l! H/ i: b
Can I fit a Dynamic Turbosystem myself and, if not, how long and
5 ]. a( P8 x/ K/ H, Awhat is the cost of having it fitted for me ?, r, s; n. U/ \; c& ?" r
While most competent mechanics could probably fit a Dynamic Turbosystem,
+ |& J- H' P/ Ytuning requires specialised knowledge. The lack of this knowledge could have1 u$ \! X6 `6 b" e) `
serious consequences. In addition, warranty can only be provided on Dynamic- h! b# Z" ?' E
Turbosystems which are installed by authorised facilities.0 I" T7 `( b) u: @# E% L8 O, T
The cost of having the installation performed by Andrew at Berrima Diesel is9 Z) {* H7 }6 d% H
only about 10% of the total purchase price. This provides a warranted, correctly! w3 |1 o( H0 o
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
1 V; Y7 X i0 bperformed in one day., e. P/ J) N% K0 n
What creates the most heat? Fuel or turbo boost?) D" I- B" n! Q. \
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
0 g$ ^& x O% J& C4 c2 y/ {requiring a butterfly are vacuum operated governor pumps) to operate. The more air7 ^: t3 E6 f3 v- N5 J
the better. Add too much fuel to the equation and the exhaust gas temperature4 V+ D, }; b) `) h
rises rapidly.7 X( K* U( k2 }- z
What type of oil and how often should it be changed ?
5 s9 G7 i& w+ ]* s: Y) L5 n2 FTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic' U: r9 D, j8 P2 r
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
- [' ]7 j$ A% ?$ F( A, |# q6 O lChange oil at intervals recommended by the vehicle manufacturer.* ^% q& P6 Y& M
How long does a turbo last ?( g, n$ R0 U& f* m5 B
On average, as long as the engine or longer with regular engine servicing and good
9 }; K) w; T) T! p0 m" p& Rquality engine oil.
4 P# I' |7 {$ r( _: g5 VWhat is a ‘dump’ valve or ‘blow-off‘ valve ?# w: b( s/ V$ F1 N# [: H3 c
A valve which relieves boost-pressure between the compressor outlet and engine as0 C$ E" C) J" ?
the throttle is closed (Only required on throttle valve controlled diesels which are! N8 A! @+ c/ ~' A j4 h
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
9 [: q: B6 @; Ysounds good changing gears among other reasons!
. p: d4 p! ~0 u' N! VCan I fit a turbo from another 4WD ?5 a0 W/ ?; i; F/ g0 U& M
No, virtually all turbocharger are different inside, even if they appear similar on the
+ y" f+ f. A7 uoutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
7 Z( b4 k+ m+ o6 M$ W- \specification.
: o% w/ Y) S5 P8 M! ]Should I leave my engine ‘ticking over’ before it is turned off ?0 g3 w& u) ?! g# J. m- o0 Y/ E
Not for normal every day driving, but still worthwhile if the engine has been under
% `1 h( J* R; E1 x C: X* Bload or raced before being turned off. e.g. Towing a caravan or after climbing a long8 r2 {7 m, ^4 A o. F
incline.
8 A; g7 Q3 G- a& [! G5 {2 T# \0 f aWhy is it important to balance a turbocharger ?/ W- k% p/ K" U' {1 o% G
Without highly accurate balancing, vibration will create a whining noise, reduce
% f K/ I7 b4 w* E; i) Rturbo bearing life and reduce turbo efficiency.
! T0 f* j K c! }( c6 X" nHow much boost does my turbo produce?* ?) z- e4 @ y2 d( O2 v
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
2 e# _) O/ D% p$ o# HIntercooler turbocharged engines running upwards of 13PSI.; [: a+ ?/ u0 A b: n' A# ?1 g
How many psi in one bar ?2 u# A- W; y! t, U2 q
14.7 psi = 1 bar.
' v4 r" Y6 c0 Q9 lAre all actuators the same ?
) O; O1 e6 {: F0 F9 z" B7 a8 e, LNo, each has a different opening pressure and rate.
1 _$ [# P' Y yOil in the turbo inlet pipe - Should I be concerned ?
P3 _3 B2 c# ]9 N9 r/ QA small amount of oil usually exists, drawn in from the engine's crankcase breather5 B: l8 y& N" U$ `" i' G1 {
system. High engine wear will increase the amount of oil found, and will require- U! N6 A+ U$ I% h1 y/ O
further engine tests (not turbo).
. ~: W: p" s( b# NShould a turbo be serviced ?8 C# [ r4 E2 g6 R y
No specific turbo servicing is required, but regular quality engine servicing is needed
- {/ U4 j) \* X6 _6 C# z' w5 Kto reduce the chance of turbocharger problems.
9 ^0 L0 ]9 d. M) NWhat is a water-cooled turbo ?
# |/ Z6 w0 V+ n, g9 | qThe central part of the turbo, housing the bearings, is surrounded by a water jacket
$ k$ w; r- \( q$ Y) h3 Fthrough which the engine's water coolant is passed. This water continues to circulate( N2 \3 k |8 Z. W6 y/ K$ e
after the engine is turned off, cooling the turbo, and preventing heat soak.3 p; p" L6 h N9 c0 {" S
Do I need to up grade my exhaust ?
5 A& E/ `7 @( g+ PGenerally not. Our systems are designed to run utilising as much genuine component
3 C, k- x( j" }2 ^5 bas possible. Some systems on the market promote exhaust change as it is required by" i% G/ i P3 [) |
that particular turbo. Doing so usually picks up more noise than performance.
- w' l) O; y: q: MHow noisy should a turbo be ?3 x8 p+ ?5 E6 R+ t% R/ z" R
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
' P1 g% E- R+ s% Rnoise.
7 H q' V l! L0 kWhat is an intercooler ?
8 f. p" p7 z5 M" y& uA special type of radiator which cools air before it enters the engine. As a turbo% h+ O+ ~$ n. @! x" G
compresses air, the air heats up. Power can be increased if the air entering the engine( G# s2 ]/ S9 C' ~
is cooler. The cooler air is more dense meaning that more fuel can be injected for9 n9 D2 e# B- s/ H! M& S3 a8 A
more power.
! g2 e& _8 Z$ ?$ E# oWill my vehicle run ‘cooler’ with an intercooler ?# U+ n5 Z. Z0 V8 y
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles/ E ?! V# b: O0 O& L
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
& \+ f. v. v+ L( M& B. b. L7 ~! r7 o; |air passes out of the Intercooler over the air conditioning condenser and finally the
3 h& w6 W- V2 f I+ O, kradiator. The poor old radiator is left with scraps of extremely hot air and then is. n# O6 w% y" ^5 T' s T
expected to cool the engine. We don’t advise fitting them as hot Australian conditions4 t; y" k: b! J! {% `, Q9 y, f
can often be the catalyst for engine heat problems.
+ R: B: ?; e: Q5 H4 lWhat will happen to my fuel consumption?
0 r/ v: P6 U2 p6 d: i! u/ o7 SMore power generally means more fuel. With a diesel turbo system, fuel consumption
9 R: k1 H- U0 t: G) estays 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
