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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. , b3 s" y7 f/ {% |
: [1 T; m* m. T4 `% N
+ x/ M" M0 F/ `8 FTech Sheet" _% @! t% i% j/ x7 z5 Z
‘Frequently Asked’4 H9 p1 K. j, g1 h: X! Y9 r
‘Turbo Questions’(In no particular order)) x% b8 A; B4 ^8 u0 ~# { ^
Your turbocharger is engineered to match the specific requirements of the engine it is% n. h! e9 K. p
fitted to. Each is dependent on the other to maintain optimum performance. Don't
% C: s: @0 ?5 J& O( Cthink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
" a7 Z# n/ D @( j9 v" Oturbo's requirements are similar to the engine’s. It is, therefore, essential that- o0 Y5 p7 _2 j h* }/ l* e" Z
scheduled servicing, using good quality oils and parts, is central to caring for your1 `/ C0 [, h w4 A5 T3 V- @7 n
turbo.
5 A- g# g" t" v. Z( ]( }, MIn many instances Berrima Diesel receive turbochargers which have been. c6 J2 e4 ]6 Z0 u% \1 W! E; \3 Q
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
! L3 U) l0 m# ?% tIncorrect fault finding is often caused by a lack of product knowledge. Many
, L! V1 h2 v: I% }, l) l! Ucontributory items around the engine bay can trick the unsuspecting into believing the' p; u0 k% T+ s. y4 z
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
; q% f& c! g$ D$ X% D3 h7 U- Z/ rdiagnosed before a replacement turbocharger is fitted, the problem still exists!! O/ W, S$ `* s+ z
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
5 y3 X a" m5 X: h* r" \- P* lturbo can be killed in many ways.- K. \4 Z" z9 s6 C8 I! R
Foreign object damage results in either the air intake "compressor wheel" or exhaust# p, _6 T/ }+ @3 Y3 \ Z, O
"turbine" wheel being damaged. The former is often caused by someone accidentally) g$ M# a2 A# z6 }/ n/ E- _1 }
leaving a nut or other foreign body in the air induction hoses. Please be extremely" M' P. n8 }) h7 } `9 {, ~5 f
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
9 m8 ?% \. i+ G7 Y. bthis may be caused by part of an engine component, such as a piece of valve, exiting- B# B3 P; C4 ?
the engine in rather a hurry! In both cases it results in severe turbocharger damage' B' U5 w$ P) S3 }. A2 M& G* M' A
instantly.+ b: P9 b r) W) v
Turbochargers are simple in operation, but manufactured to precise tolerances as fine/ N0 _' i8 Y1 b7 a1 U2 P" D1 P
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single |6 e9 N: V( C, V/ A
turbocharger many times, including final assembly. The balancing methods and E6 {- ~8 [) w& t# P6 Q
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
4 M h% _( b1 i8 N3 ^. A: [3 Ttolerances required for today’s high speed turbos. It is now common for+ W5 V) @7 p) ]6 T* X z
turbochargers to spin up to 150,000 rpm +.
7 Z! l6 \' ?# Y' f8 T4 [# lThat’s approximately 35 times faster than most diesel engines rev at the red line!: k, p$ Q9 x4 n
Sophisticated machinery and highly trained factory staff ensure that the highest% \, B4 v! d5 F1 ^: o9 i) u' t
standards are always maintained.
r+ H' |% H3 _4 k* R" H% ^+ JUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are
9 u8 u- F2 `, P& F K4 vto always allow the engine to warm-up fully, until the water temperature gauge
$ W9 ]+ h- R' q8 wreaches normal, before full throttle is used. Try to plan the end of your journey
4 A- T/ Q/ t& j% O# _4 Asympathetically. Don’t use full throttle or allow the engine to labour during the last
% c- p+ L, o1 R* \few miles. This will prevent excessive heat build-up within the turbo when the engine* r5 l; |1 ~' U8 ~
is turned off. Also, when coming to a standstill, try to leave the engine idling for a7 K2 Z3 ~" w& m9 }" ^& j* J
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
) n: ?" k* @; Y* f' l3 ^your seat belt first and then turn off the engine. Never rev the engine just as the; D9 E6 | k: n% k
ignition is turned off. Remember the turbo spins at a far greater speed then the
3 ~7 P% \8 r" c6 Dengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases4 h0 O/ ~9 v4 _) b9 K; E( w
within a few seconds. In reality, none of the above traits will cause a turbocharger to5 m! ^8 w# u# z: m. |
fail immediately, but repeatedly over a long period, they could reduce the life of your
6 c, I; E( y) Hturbocharger." Z: e/ W9 P( |
If it becomes necessary to seek advice about a turbocharger or a turbo related# B' `: H$ s' u1 A" \
problem, always rely on a professional. Berrima Diesel, together with DTS
4 B9 b2 x O& i! K: s4 y, ~8 G7 _turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one. C8 x% L6 `) y) M
of the most experienced turbo installation companies in the world. We can advise0 s; k7 D9 E, ]7 u1 y+ C7 @8 o& n
customers with turbocharged 4WD’s on a wide variety of questions and issues
2 C4 z: a* d6 B3 W5 ]relating to owning and running a turbo car.
) L$ K4 p. J1 V6 g. ^/ I. gIt cannot be stressed too much how important it is, when purchasing turbocharger
7 p; B6 ?; `( H3 R/ bsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
% _' ]1 ~8 w- R7 P1 [% {5 I4 m+ O& Z% sso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
0 L8 v* Q6 w Z$ ?" m9 J( D/ j% rWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
- E7 D4 q3 Q( ~, `8 w# w+ ^7 E/ U6 Zthat your short-term saving may turn out to be a long-term nightmare.* b1 m8 j; [2 k* `5 B
What is 'Boost'?& B+ Q& ^4 }/ C- {# Y" E& @
Boost is a term used to describe the increase in pressure, provided by the
; u2 s, n6 k! ^- b2 F) C) m- vturbocharger, to the volume of air, entering the engine. This pressure is expressed in
5 y- M* G6 T9 Na number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same. |. {- E( b. j/ z* ]7 w7 ^ r
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
3 Y# W5 z# |) n# h3 \7 ?14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power4 P2 D7 L" N8 E6 Q8 y
output is increased. This pressure increase is called 'boost'.3 w4 f. n6 s. P. u S5 C
How does fitting a Dynamic Turbosystem effect the power of my8 l- W7 D' x1 X* u9 f, U* B
vehicle?- Z8 f: r! [% m8 B' A
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
5 D" u/ F6 l: p* V9 n& W% Garound 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
- J! r0 P1 u- Q- w/ f/ h2 b+ O/ `Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
+ h# b: f5 I. A$ i# q: tmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this; Q: \" W( G9 w1 g- D
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
# C0 p* N( u3 z. Bat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At2 p3 [" i* o$ b, z
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
! h6 e+ E6 g( N0 z1 Uthan the standard vehicle at the same R.P.M.
7 Q$ A. W0 v4 l1 oCan I fit a Dynamic Turbosystem myself and, if not, how long and
* u* z* ^' X4 ^+ {what is the cost of having it fitted for me ?8 g. E* n. E- ^( _3 M8 ^- _) e
While most competent mechanics could probably fit a Dynamic Turbosystem,9 a4 c6 O1 }, @3 j
tuning requires specialised knowledge. The lack of this knowledge could have
0 _; N: G& c, |3 iserious consequences. In addition, warranty can only be provided on Dynamic
4 D8 w- Q# H" J& tTurbosystems which are installed by authorised facilities.
$ Q& A4 y5 M; hThe cost of having the installation performed by Andrew at Berrima Diesel is
9 j. } e0 o* Ponly about 10% of the total purchase price. This provides a warranted, correctly
& @$ I ~9 A' y( `9 {! B$ e% r/ Vtuned, "no hassle" installation for the customer. All diesel vehicle installation can be
1 Y; A! X# G! h- D+ `1 p$ L! _$ [. gperformed in one day.
, U: X- C* D! ?What creates the most heat? Fuel or turbo boost?0 w1 [& Y- S! ?* [4 h
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
( g3 p6 ^' f( ?. D8 U# brequiring a butterfly are vacuum operated governor pumps) to operate. The more air
, U1 |; _! R: G9 n$ @' J7 \, Vthe better. Add too much fuel to the equation and the exhaust gas temperature) t4 ] d! k8 e. \6 ~- T
rises rapidly.
8 d8 H: r& I7 u8 `What type of oil and how often should it be changed ?( m, [7 d- D+ l# d, z( w% S) z; x
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic' k% `; O& \0 ^. v% C
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .% q# G) K- c9 H1 ]2 E
Change oil at intervals recommended by the vehicle manufacturer.8 C9 Q- C, [! u' D8 Q, p
How long does a turbo last ?0 p$ w; Z+ V& s9 X7 q3 l+ _
On average, as long as the engine or longer with regular engine servicing and good0 ] j9 i# ?; n: ~. x
quality engine oil.4 }& r1 _: a ?" {& o/ B9 i
What is a ‘dump’ valve or ‘blow-off‘ valve ?
3 x% q4 V6 W( ?" tA valve which relieves boost-pressure between the compressor outlet and engine as/ `, m v D' L4 I ~: q6 f6 q* b
the throttle is closed (Only required on throttle valve controlled diesels which are# D0 j, y- k! b; A2 h2 g* K: }
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
) _6 C) _% H1 o- dsounds good changing gears among other reasons!% S& `, t) ~. J1 X% Y
Can I fit a turbo from another 4WD ?
2 M1 V% F# C7 B1 b5 NNo, virtually all turbocharger are different inside, even if they appear similar on the o# Q, N, V6 M, t
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
" r6 K' A/ d- q% J0 v; sspecification.+ X: b& D6 L0 v# Q5 u$ \
Should I leave my engine ‘ticking over’ before it is turned off ?
* }' M$ |! e4 v/ DNot for normal every day driving, but still worthwhile if the engine has been under
' I) ^0 T) z# W3 G, I% xload or raced before being turned off. e.g. Towing a caravan or after climbing a long
, w8 R4 c/ w2 i1 m% l2 Bincline.
! Z& P0 a9 ?2 w5 i0 DWhy is it important to balance a turbocharger ?, f* z1 i3 a I7 }0 A* C7 _
Without highly accurate balancing, vibration will create a whining noise, reduce) N6 p% W" p) l; V6 _
turbo bearing life and reduce turbo efficiency.
! K% v/ k, ?# r/ I9 xHow much boost does my turbo produce?( r2 }+ r, |, q% {6 u# f
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with- @( ~3 C; H6 h
Intercooler turbocharged engines running upwards of 13PSI.
5 F$ Z$ @% U/ o! @How many psi in one bar ?. Q& }6 k5 z% ?+ z5 H
14.7 psi = 1 bar.
# C$ {# t k* O+ bAre all actuators the same ?4 Y+ O( [) V6 E* T P' o
No, each has a different opening pressure and rate.
8 n) M* ^: l G5 X3 N$ a1 |9 TOil in the turbo inlet pipe - Should I be concerned ?0 ~" y* G$ Q+ |5 P" C9 F( i' u
A small amount of oil usually exists, drawn in from the engine's crankcase breather
! U( _0 N5 q4 @$ [8 }+ `3 psystem. High engine wear will increase the amount of oil found, and will require
3 q* X5 j: a4 Q/ t# k3 lfurther engine tests (not turbo).. I% _5 Z5 d& B) N" q8 k% t0 f
Should a turbo be serviced ?* L7 x% K$ h; r+ F& |( F% p
No specific turbo servicing is required, but regular quality engine servicing is needed2 {' o: ?' }# i x
to reduce the chance of turbocharger problems.
# @, ^! J3 v u5 u1 Z8 y+ @8 K9 U+ J, Z2 OWhat is a water-cooled turbo ?' K& G0 ?% R# Y* P: {5 v
The central part of the turbo, housing the bearings, is surrounded by a water jacket
9 v ^: }% s1 ]6 kthrough which the engine's water coolant is passed. This water continues to circulate3 M8 i* l1 W& K W1 p
after the engine is turned off, cooling the turbo, and preventing heat soak.* P2 V# }3 N' I; F
Do I need to up grade my exhaust ?
; [; P0 v/ s! w# F+ OGenerally not. Our systems are designed to run utilising as much genuine component
1 c0 N6 o) i) I) Zas possible. Some systems on the market promote exhaust change as it is required by
: `' {$ Y+ ~! f. q3 z) O) Gthat particular turbo. Doing so usually picks up more noise than performance.
( j1 ~# s* [6 Z) a7 oHow noisy should a turbo be ?
3 T( U' U' W" I0 a) l' }; I: wOnly an unbalanced, worn out or damaged turbo will produce any significant turbo8 e/ c2 n8 H$ f) M: Q
noise.
8 ~4 f% |' D6 V6 n, sWhat is an intercooler ?
% S; U& K d3 ^3 g1 Y0 _6 \A special type of radiator which cools air before it enters the engine. As a turbo
( y u" {+ |( g. Q+ ]compresses air, the air heats up. Power can be increased if the air entering the engine
4 _( T5 t4 n# n& Z: a. }1 h' m( ois cooler. The cooler air is more dense meaning that more fuel can be injected for
. {0 m# \( n4 t3 ~/ z4 mmore power.
7 B, i- J9 p* fWill my vehicle run ‘cooler’ with an intercooler ?$ i( \+ K% W" a8 a4 ~: @( \* q, c. _
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
$ s# K& |( [3 C: r7 z- \# a- J( Krunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
. A2 e( q) O" ~+ R" J uair passes out of the Intercooler over the air conditioning condenser and finally the
; \* F5 i2 b s# @2 u3 Bradiator. The poor old radiator is left with scraps of extremely hot air and then is8 a9 C. P3 x3 U" w9 q
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
/ x/ e+ D. h, ?4 mcan often be the catalyst for engine heat problems.6 v( U0 P- P6 F, j& z' G: S3 `& U; _
What will happen to my fuel consumption?( _" V: P! p* N
More power generally means more fuel. With a diesel turbo system, fuel consumption
+ s/ p% {" O4 j5 N5 Fstays 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
