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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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! j3 Q' G. G. ~- {: ], _- sTech Sheet' c+ ~# R8 L0 X) u7 U5 V6 w
‘Frequently Asked’! G" b$ k. o- H) c1 d
‘Turbo Questions’(In no particular order). ?7 W, F( H8 |; k
Your turbocharger is engineered to match the specific requirements of the engine it is
+ P$ g& I" A# Vfitted to. Each is dependent on the other to maintain optimum performance. Don't | T% L1 h! l
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
9 O6 q3 M% _6 }turbo's requirements are similar to the engine’s. It is, therefore, essential that
4 Y0 B2 `3 {& X) a" X5 zscheduled servicing, using good quality oils and parts, is central to caring for your
' M9 n' \$ z. u& |5 f& p7 V5 G( Oturbo.
q4 P% K; B4 {5 _In many instances Berrima Diesel receive turbochargers which have been6 X2 I+ {+ o& r9 l# E2 d# C3 n
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.4 t) [: w8 K. |! f- [3 C
Incorrect fault finding is often caused by a lack of product knowledge. Many- Z% ~- e, m6 P/ v `: j4 t1 b
contributory items around the engine bay can trick the unsuspecting into believing the
0 o' c) C. Y* r1 P9 J+ q- s# n/ b/ vturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
' U% S3 ?7 w; \$ ?3 ]diagnosed before a replacement turbocharger is fitted, the problem still exists!
: i' D' Y$ ^: ?, G8 o5 w& _We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
( I; I1 w: a4 G4 u1 p1 V) uturbo can be killed in many ways.
6 {6 [. G( _ c3 R1 t# CForeign object damage results in either the air intake "compressor wheel" or exhaust' m4 p; m- r* S, I f* n- P
"turbine" wheel being damaged. The former is often caused by someone accidentally; P9 ~. L T+ C& ^- O4 Q+ ]9 @
leaving a nut or other foreign body in the air induction hoses. Please be extremely( T% f% e* p d/ S) j, i+ Y
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,3 i$ _! Q* o8 A' V8 B) x! B4 d
this may be caused by part of an engine component, such as a piece of valve, exiting. S( l) C! x4 v6 F0 \
the engine in rather a hurry! In both cases it results in severe turbocharger damage( t9 O( ]* q, i+ C8 F* k
instantly./ Q: Z8 [- u& E1 z0 y6 H
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
4 ~9 g" r5 d5 }as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
8 e) H B( m$ [' ^% @$ p mturbocharger many times, including final assembly. The balancing methods and
9 X# e6 y: u' i% B% Cprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine
/ J$ s5 A k( _4 _tolerances required for today’s high speed turbos. It is now common for
* q# J4 L! |- P9 `1 jturbochargers to spin up to 150,000 rpm +.
$ W# Q- z( V7 ?. D, i# s( TThat’s approximately 35 times faster than most diesel engines rev at the red line!
3 _ j- g3 Z3 a% JSophisticated machinery and highly trained factory staff ensure that the highest
+ ^7 e) \. o$ Tstandards are always maintained.5 t: j. }/ F. @' t6 T i
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are2 Z6 [. G6 }- Z. I4 l
to always allow the engine to warm-up fully, until the water temperature gauge' q! M) F* u3 F
reaches normal, before full throttle is used. Try to plan the end of your journey: o1 t7 r. h9 {
sympathetically. Don’t use full throttle or allow the engine to labour during the last
: |& Q3 m+ s: v* P$ Zfew miles. This will prevent excessive heat build-up within the turbo when the engine8 M) V5 R! C: M) D" k) k: \
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
. K( u! P) x0 N$ ofew extra seconds to allow the heat to decrease. No need for a timer though, just undo
. r. I( b' `! _( U# [/ l# s+ ?your seat belt first and then turn off the engine. Never rev the engine just as the4 _) m2 i/ x& t4 }
ignition is turned off. Remember the turbo spins at a far greater speed then the
/ ?- r2 C: ?5 ]2 U: f8 L1 Iengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases9 U6 R0 J0 D3 n: R1 f$ E! Z
within a few seconds. In reality, none of the above traits will cause a turbocharger to
0 A. y6 |% d3 G5 i8 Hfail immediately, but repeatedly over a long period, they could reduce the life of your
7 g6 F# A: o/ q6 i7 ^2 `, `. |- `turbocharger.
- C- G: Q; `2 l1 ?' O* K$ s+ eIf it becomes necessary to seek advice about a turbocharger or a turbo related! A* P( J! O( J/ s1 g# _
problem, always rely on a professional. Berrima Diesel, together with DTS
) Z4 I# u3 F, y; k, C, mturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one7 N* C2 r) d+ n j j* E7 ^
of the most experienced turbo installation companies in the world. We can advise
. n3 E- Y% G- G$ p1 U0 q2 [; Acustomers with turbocharged 4WD’s on a wide variety of questions and issues
: r- [6 r. q3 ]& Z, s/ ~) Frelating to owning and running a turbo car.( Y1 ]" i+ @% Y! b7 I E
It cannot be stressed too much how important it is, when purchasing turbocharger
+ y3 v- s0 p1 Vsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
. ]0 d4 z, v! i# o: [so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
2 I9 B, k/ i+ k; f& ?Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
* W8 d; q& _2 c! I7 Cthat your short-term saving may turn out to be a long-term nightmare.
( Y0 \: ]- V: pWhat is 'Boost'?9 F! l) ?4 ]9 e5 u1 ~! }0 V1 [8 {
Boost is a term used to describe the increase in pressure, provided by the! O" Z* @# K: u1 S; y
turbocharger, to the volume of air, entering the engine. This pressure is expressed in3 b) e/ m; G7 a% N+ G. }& \$ o
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
9 Z5 D, D# a3 J+ pthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa5 e& R+ g3 }7 _7 B
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
* W8 o" P" q4 K. K1 J9 z6 k ]# Qoutput is increased. This pressure increase is called 'boost'.
# M5 o0 Q" `: ]2 fHow does fitting a Dynamic Turbosystem effect the power of my5 `; E; m# o, W$ ]7 H4 ^
vehicle?
6 R# W5 l Y/ j% V) cModern 4WD diesel engines, typically produce peak torque (pulling power), at
& x! ]) e( e# o6 e; @! o1 yaround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
6 w& b! D5 {) o1 YTurbo boost starts at approximately 750 R.P.M. and rises progressively to its" X' q& ?3 N% d1 U
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this+ m {5 J+ d$ s
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
! O2 c2 g! Y0 @# i$ c5 Bat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
4 T5 p b9 F! Vno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater) M1 E0 u+ y- T: a6 O
than the standard vehicle at the same R.P.M.# O, k# k! O( }0 R& x
Can I fit a Dynamic Turbosystem myself and, if not, how long and
; G' H4 q6 F4 r7 cwhat is the cost of having it fitted for me ?6 R9 X! w8 n9 A/ ?
While most competent mechanics could probably fit a Dynamic Turbosystem,
3 |2 X. h; U2 dtuning requires specialised knowledge. The lack of this knowledge could have3 F! Z3 X; |' x( _% Q( [1 o* {4 {
serious consequences. In addition, warranty can only be provided on Dynamic
! {+ d* B5 \& C0 j6 y4 G: T7 DTurbosystems which are installed by authorised facilities.2 F( f# [8 U# X( }
The cost of having the installation performed by Andrew at Berrima Diesel is/ K. L2 V5 _, `, W# n. ^/ s
only about 10% of the total purchase price. This provides a warranted, correctly! m+ |1 `2 f+ T1 i& D. U& \5 w
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
% _0 G' E3 p' Q; V4 tperformed in one day.- o& A4 l5 S( _3 f6 [, e; \
What creates the most heat? Fuel or turbo boost?4 s4 f5 H* v: P& F) h
Diesels do not need an air control (eg. manifold butterfly valve. The only ones6 U. b; y2 S5 L7 `
requiring a butterfly are vacuum operated governor pumps) to operate. The more air( k- B( O3 B$ K% o9 E- {$ m# S; W
the better. Add too much fuel to the equation and the exhaust gas temperature
& F% [+ }7 J8 W$ R& }5 Jrises rapidly.% T' S4 d/ M, g, J2 E- A( Y
What type of oil and how often should it be changed ?
# ~! ~; G& ^( W/ J- PTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic+ T \- \! g; l! Z6 H
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra ., ^" d% O6 a2 L# J/ v
Change oil at intervals recommended by the vehicle manufacturer.
/ t/ [& c3 q' o1 J( ~How long does a turbo last ?
+ U& X3 Q& k, {6 {! E1 I- x: WOn average, as long as the engine or longer with regular engine servicing and good) \0 d2 ^" m" E' o- W
quality engine oil.. }9 ^5 K+ e) |
What is a ‘dump’ valve or ‘blow-off‘ valve ?9 o, j: c' C$ I" b% {) {
A valve which relieves boost-pressure between the compressor outlet and engine as
* ?" |, E6 o9 p7 y+ `- lthe throttle is closed (Only required on throttle valve controlled diesels which are
; A; N+ S6 \' H- @2 Trarely seen these days). These are commonly fitted to hotted up petrol cars so it7 k$ [4 O6 k9 C5 P, A7 Q. m
sounds good changing gears among other reasons!+ g) {/ u; k2 m. J# ^7 g3 A
Can I fit a turbo from another 4WD ?- w9 ]) y! }3 v p1 y5 w8 s
No, virtually all turbocharger are different inside, even if they appear similar on the
! M. j! G& i8 B, s0 Qoutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the! C3 R( H, Y3 Y1 }4 o8 ^
specification.) T6 B0 _( n5 a: L; L- z5 X- R( u
Should I leave my engine ‘ticking over’ before it is turned off ?
6 j7 @2 a* [# E" j5 q" NNot for normal every day driving, but still worthwhile if the engine has been under1 O$ i9 \: C: R5 V2 u
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
5 G' [1 C7 ?8 |* @2 q) X7 jincline.. q4 k" h4 p8 G* k4 A- ]
Why is it important to balance a turbocharger ?0 o8 ^2 G% W$ w+ U0 y* A0 `
Without highly accurate balancing, vibration will create a whining noise, reduce
/ f7 T" S5 b! n. m1 D% R8 R7 s' Jturbo bearing life and reduce turbo efficiency.% E5 M" T4 ?2 ?: \ ?0 U7 o
How much boost does my turbo produce?
5 Y: q8 n* }) S$ k4 vCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
8 M: ?# i/ w/ z! H' F% MIntercooler turbocharged engines running upwards of 13PSI.# d7 L; z8 E8 a! p6 @
How many psi in one bar ?
0 N- Q8 U- a' K T Q! r7 `14.7 psi = 1 bar.
2 Z& Q& p; X! R' h; _- f- CAre all actuators the same ?6 B; U( Z' x4 G* s; n
No, each has a different opening pressure and rate.. r. J- n. L3 u( h, r
Oil in the turbo inlet pipe - Should I be concerned ?0 e' x' S/ i1 u1 H* J* Z5 T, {
A small amount of oil usually exists, drawn in from the engine's crankcase breather
# T2 W/ E2 {8 Ysystem. High engine wear will increase the amount of oil found, and will require$ K& @0 W1 t" K$ g1 W
further engine tests (not turbo).. d* d; W- g' j
Should a turbo be serviced ?
( O6 ?% v! |& z: f$ [No specific turbo servicing is required, but regular quality engine servicing is needed
% a$ o" S0 B6 U5 a$ d4 l7 n+ _3 G* Z% cto reduce the chance of turbocharger problems." ?9 _( Q! Y9 E1 P1 g: K3 v3 W
What is a water-cooled turbo ?
2 |- @4 h) i9 Y- K: kThe central part of the turbo, housing the bearings, is surrounded by a water jacket
2 O0 ~' o" W2 v: C0 U$ sthrough which the engine's water coolant is passed. This water continues to circulate
+ P& M: {. R- V. V" g* Rafter the engine is turned off, cooling the turbo, and preventing heat soak.
6 U5 W% l2 [7 {Do I need to up grade my exhaust ?8 F" m) A, [) V; e) N( U
Generally not. Our systems are designed to run utilising as much genuine component
! M- b4 C8 s2 I( p- D2 kas possible. Some systems on the market promote exhaust change as it is required by. M4 O* S0 T1 {) L5 ~9 b
that particular turbo. Doing so usually picks up more noise than performance.5 a; t. H. |6 o% h1 Z' I2 T/ M- o
How noisy should a turbo be ?
/ [" |/ Y. k) t( jOnly an unbalanced, worn out or damaged turbo will produce any significant turbo$ Q4 C+ H& d. h7 c$ Q
noise.. ]8 f* ^, s0 j7 r2 Q5 U
What is an intercooler ?
/ c0 p& Z) [) i$ N8 dA special type of radiator which cools air before it enters the engine. As a turbo+ w1 j9 A/ O; @( E) s3 \
compresses air, the air heats up. Power can be increased if the air entering the engine3 q; @. A: v$ h& K/ ^
is cooler. The cooler air is more dense meaning that more fuel can be injected for
4 G' }3 ?3 K7 w( G0 J; D$ O% f5 Mmore power.& H5 W, X' o6 l& q& M
Will my vehicle run ‘cooler’ with an intercooler ?
, P2 a, h7 N: _6 QTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles
) l0 o" o" q9 J9 N1 [: z7 L3 }! zrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
7 _# T% H' [* @2 f* n4 c) U% Hair passes out of the Intercooler over the air conditioning condenser and finally the3 n. I2 e& u1 n# P2 v; t) W o
radiator. The poor old radiator is left with scraps of extremely hot air and then is' `* _1 |) M/ i- Y2 a" w' c( q
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
. V* E+ k1 U' ccan often be the catalyst for engine heat problems.
; T9 p6 V! J r1 ]/ e1 u' ?What will happen to my fuel consumption?
1 F/ D9 ?( B4 qMore power generally means more fuel. With a diesel turbo system, fuel consumption( n% _# Y/ ~4 x# d, X {* Y5 J7 L
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
