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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. 7 _" m% E2 b$ ~6 ~
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Tech Sheet
4 d3 |9 J/ Z6 c0 P4 [0 B‘Frequently Asked’ X% H3 l# o- _+ s( j: c1 ], X7 J
‘Turbo Questions’(In no particular order)2 t5 ^4 `4 w2 |) d: G
Your turbocharger is engineered to match the specific requirements of the engine it is. O6 W3 n1 e( K$ j8 g
fitted to. Each is dependent on the other to maintain optimum performance. Don't
8 Q' B5 c* U* n5 H6 mthink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
( \# C0 f9 \% T5 l, W y nturbo's requirements are similar to the engine’s. It is, therefore, essential that
# _! x `6 o( H. O1 `3 g0 F9 I0 ?scheduled servicing, using good quality oils and parts, is central to caring for your1 u- W& G; b# \" m8 X
turbo.
4 z8 w7 D% d8 r7 S$ J2 QIn many instances Berrima Diesel receive turbochargers which have been4 x. K2 m) j7 e& g& }# u
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.2 }" y% P! L/ A' B+ @: P( y, q
Incorrect fault finding is often caused by a lack of product knowledge. Many) f% C! X3 h$ l( h- x
contributory items around the engine bay can trick the unsuspecting into believing the
* ?2 i( p; }: I _% r& V: Mturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
/ Z* U( T+ p$ g- `. bdiagnosed before a replacement turbocharger is fitted, the problem still exists!
# _, L. d& w3 ]. d% G& V/ [We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A
& f# Z" _6 U- j! A" u' a* g4 P/ H( @turbo can be killed in many ways.3 X4 ^# x/ x( ?: |& v: O8 p/ i
Foreign object damage results in either the air intake "compressor wheel" or exhaust. T4 n) V; p4 g; U: d! m6 O; e8 a# l
"turbine" wheel being damaged. The former is often caused by someone accidentally
* ]$ I9 V) m+ Q# q( j% r) kleaving a nut or other foreign body in the air induction hoses. Please be extremely8 H, B: J0 Q7 d, u' b
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
+ E& R8 T: n# R, ~3 }this may be caused by part of an engine component, such as a piece of valve, exiting1 B0 R0 G; m& z. m/ G: b
the engine in rather a hurry! In both cases it results in severe turbocharger damage4 J8 w, e. G, g- U4 p# ~. A
instantly.
+ G& \) P( Z7 l+ ?% u: s) CTurbochargers are simple in operation, but manufactured to precise tolerances as fine
' [: Y# M: u4 ^& Q# n" ]as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single3 S6 S- f+ j: w/ j( \! d
turbocharger many times, including final assembly. The balancing methods and
; O- S; i2 b5 [+ k0 rprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine
: U4 ~% U& Q. ntolerances required for today’s high speed turbos. It is now common for
7 L; v9 V c: l8 Q9 Rturbochargers to spin up to 150,000 rpm +.
# O5 c2 B0 B" x2 pThat’s approximately 35 times faster than most diesel engines rev at the red line!
$ I! z+ G5 I$ j. }Sophisticated machinery and highly trained factory staff ensure that the highest' b) ]2 q, ^1 ~/ m! f
standards are always maintained.
' ]& S; M; A- S3 lUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are
, `% }8 P( n2 C! h5 \to always allow the engine to warm-up fully, until the water temperature gauge
: g- ^' b- B: V3 N. @) vreaches normal, before full throttle is used. Try to plan the end of your journey& x& v# o) Z) P8 [5 L; Y: ~% K
sympathetically. Don’t use full throttle or allow the engine to labour during the last& V& a( F" F3 N8 S c6 N e# j# n
few miles. This will prevent excessive heat build-up within the turbo when the engine+ J, J: b. ^2 V5 I C
is turned off. Also, when coming to a standstill, try to leave the engine idling for a) e% y/ h+ a+ [' n' H) f
few extra seconds to allow the heat to decrease. No need for a timer though, just undo' ^! M( b \0 W
your seat belt first and then turn off the engine. Never rev the engine just as the5 X4 x/ ?1 Q" O
ignition is turned off. Remember the turbo spins at a far greater speed then the. }, H- a3 g; U/ [$ m- {3 E% D& X
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases l3 ~. t. t O! x7 d- v" @
within a few seconds. In reality, none of the above traits will cause a turbocharger to: o5 c7 a; u, j0 l
fail immediately, but repeatedly over a long period, they could reduce the life of your! O. Y5 g5 x: @; u; k; U$ w& `
turbocharger.+ t& |7 y6 T5 o
If it becomes necessary to seek advice about a turbocharger or a turbo related3 Q+ s; ?4 _" {
problem, always rely on a professional. Berrima Diesel, together with DTS
" Q5 ~' U4 W2 lturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one: l7 T1 D4 [. N. F0 a
of the most experienced turbo installation companies in the world. We can advise; A# o- _* t- t
customers with turbocharged 4WD’s on a wide variety of questions and issues% I! _2 z* E9 h
relating to owning and running a turbo car.+ n/ Y- A% S* h8 ^1 P2 ~
It cannot be stressed too much how important it is, when purchasing turbocharger, M/ z, l" ]. i8 U
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
# _7 y2 o0 C5 ~, U; |+ p. Y1 H7 p4 Oso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
9 H( n2 w# a3 N+ j. A+ {) N0 TWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk a* ~8 D$ x Q9 f: b
that your short-term saving may turn out to be a long-term nightmare." ^& P; l# C. V5 v/ V4 H# ]
What is 'Boost'?+ p: R/ C' C2 t+ ?! }6 F6 _9 j7 M! a. [
Boost is a term used to describe the increase in pressure, provided by the
( Q7 _* \6 x* Q% V% t, V7 ?turbocharger, to the volume of air, entering the engine. This pressure is expressed in
" O. W" L. K6 D s G" j2 ya number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
1 e4 _0 D6 A/ L* l4 @' l$ `thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
7 _9 z) h: H4 b/ i3 L* g14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power3 x* |4 R6 ? s G( c
output is increased. This pressure increase is called 'boost'.
7 j6 W- s% F, _0 z" D7 PHow does fitting a Dynamic Turbosystem effect the power of my
* A* @4 I* _' x" zvehicle?
8 W: N8 A9 h6 W9 A H( TModern 4WD diesel engines, typically produce peak torque (pulling power), at0 D# l6 h( t* D; u7 A9 }
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
5 n9 p# b* a$ ?# h+ }+ W& T8 k- |6 tTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
3 T: c# B% W2 B3 H* A( W4 Y* amaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this0 a6 F$ o; i3 i G
point, the percentage torque increase of a correctly tuned installation is approx. 40%,5 g# w& p5 o/ b7 X7 I
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At& E# D# o2 L$ Q4 R
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
" F5 }- R& Y# j& c( Gthan the standard vehicle at the same R.P.M.
/ O. O+ C4 _. I: ^9 m1 y0 q& NCan I fit a Dynamic Turbosystem myself and, if not, how long and
' ^2 }( L4 F }3 y2 A& a' z+ Uwhat is the cost of having it fitted for me ?- j$ U1 p9 d) q0 H, R' W
While most competent mechanics could probably fit a Dynamic Turbosystem,( V% g; b6 z; t
tuning requires specialised knowledge. The lack of this knowledge could have
4 Q6 V! d3 K% ~! Z- gserious consequences. In addition, warranty can only be provided on Dynamic4 D) N# ~' A0 F: L
Turbosystems which are installed by authorised facilities.3 F* }, c6 ^, U/ f' ?9 r8 g9 s
The cost of having the installation performed by Andrew at Berrima Diesel is
1 X$ z$ A s( Z* h. l2 |only about 10% of the total purchase price. This provides a warranted, correctly
4 I2 @; Z1 E7 o: {' ~7 O; stuned, "no hassle" installation for the customer. All diesel vehicle installation can be$ {; l2 b0 ^* S* W! {/ T( D) J
performed in one day.4 W8 H1 s. s" {% Z- H6 @% W+ r9 p
What creates the most heat? Fuel or turbo boost?
# h, \- C0 n9 E* TDiesels do not need an air control (eg. manifold butterfly valve. The only ones5 ~! b. P/ m) Y3 E! H! z9 t5 a
requiring a butterfly are vacuum operated governor pumps) to operate. The more air! ~' _% y2 Q9 E
the better. Add too much fuel to the equation and the exhaust gas temperature8 z0 r' a c7 h8 K) K5 L8 V
rises rapidly.
* x; ~# H5 P! u& N1 O, iWhat type of oil and how often should it be changed ?3 f S+ V% t" U$ y2 p9 i" k
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
7 e3 i- [0 e& T5 C5 N4 ^/ zengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
1 y! k0 q9 U9 T% @: [% O2 M6 I! ?+ [Change oil at intervals recommended by the vehicle manufacturer.4 h& A) y$ S/ B; h; i: l
How long does a turbo last ?9 O: \' c6 r& E6 F. e
On average, as long as the engine or longer with regular engine servicing and good
, H' q7 o' b1 H0 K4 f1 M" Pquality engine oil.- x4 x7 [4 r q! }: y+ A0 ?
What is a ‘dump’ valve or ‘blow-off‘ valve ?
/ I0 R0 s9 c2 k5 i; B- C% B, i/ LA valve which relieves boost-pressure between the compressor outlet and engine as
/ D1 }( b: l' V6 Jthe throttle is closed (Only required on throttle valve controlled diesels which are
/ Z" C) G2 n4 @* a8 c, orarely seen these days). These are commonly fitted to hotted up petrol cars so it! o: Y2 i$ L) v6 R6 k; x
sounds good changing gears among other reasons!; l5 V+ K- X- [: R# l* S5 h
Can I fit a turbo from another 4WD ?; `$ Z8 Q; w( g! D5 \( x
No, virtually all turbocharger are different inside, even if they appear similar on the3 W7 x. [: J5 X- S+ M: `
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
Z( c c X, @specification.' H% H4 Y3 x4 n3 _" t2 R
Should I leave my engine ‘ticking over’ before it is turned off ?
; H, u* f9 q4 c! RNot for normal every day driving, but still worthwhile if the engine has been under
7 t0 f* B2 A( @- ?8 d, ~load or raced before being turned off. e.g. Towing a caravan or after climbing a long0 w1 j1 \0 w; e
incline.) W. F! k2 z8 K5 t
Why is it important to balance a turbocharger ?
" x8 h. d+ j* e2 C2 IWithout highly accurate balancing, vibration will create a whining noise, reduce. k5 I. d3 P0 j$ Z. U
turbo bearing life and reduce turbo efficiency. G, l1 A; o; Y* P: s5 B9 h& w
How much boost does my turbo produce?
4 ^2 d: c5 m. V" l5 V' I- ?) ~$ dCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
z0 G8 V" g% r6 C. D8 G5 hIntercooler turbocharged engines running upwards of 13PSI., V* d2 z6 ?9 ?& l
How many psi in one bar ?
! e3 [3 T* e% T, C14.7 psi = 1 bar.5 D% P! h$ y2 p: g0 @
Are all actuators the same ? C0 v5 `! Z6 u& f& y% S
No, each has a different opening pressure and rate.
, @$ w; H, ^, R5 y; s8 cOil in the turbo inlet pipe - Should I be concerned ?" s+ e) @8 `1 m& w6 V
A small amount of oil usually exists, drawn in from the engine's crankcase breather( f# ^2 Z# K! H5 _: C, \
system. High engine wear will increase the amount of oil found, and will require
7 [! U* `& C: g2 A- p" u3 ^9 P; }# xfurther engine tests (not turbo).
/ }2 e: Q# k4 FShould a turbo be serviced ?
, N" T) _9 ^" U+ _1 \4 h7 iNo specific turbo servicing is required, but regular quality engine servicing is needed
2 o0 Y# Y9 v L) t" ?6 ^6 B8 y) Hto reduce the chance of turbocharger problems.( S7 \ n: W: Z# g5 Q* N
What is a water-cooled turbo ?
- w' V% V" f( Q6 I7 d. zThe central part of the turbo, housing the bearings, is surrounded by a water jacket
7 J; M6 ^$ O4 n; U$ U; G: Kthrough which the engine's water coolant is passed. This water continues to circulate
2 c/ g% K" n/ z) j5 O2 R! vafter the engine is turned off, cooling the turbo, and preventing heat soak.5 L# L9 b& F# V* T3 E7 m
Do I need to up grade my exhaust ?4 c7 F( n) B- s1 B/ d
Generally not. Our systems are designed to run utilising as much genuine component9 Q8 `" d& P! o+ M# L( t W( z
as possible. Some systems on the market promote exhaust change as it is required by
4 }+ |. x C0 D6 X0 ]that particular turbo. Doing so usually picks up more noise than performance.% @4 V% ^3 s7 L: i) ]3 [. N4 W9 `6 s
How noisy should a turbo be ?
, l* b2 }# E0 ]. U! lOnly an unbalanced, worn out or damaged turbo will produce any significant turbo# p" l1 c& S3 n, o
noise.9 E' p* g, `9 \% g
What is an intercooler ?! `5 J0 M( Q! ]
A special type of radiator which cools air before it enters the engine. As a turbo
9 `! c& z8 ~$ p$ S+ acompresses air, the air heats up. Power can be increased if the air entering the engine
( W! j e( F2 g8 B' Gis cooler. The cooler air is more dense meaning that more fuel can be injected for0 _5 _8 K T4 X9 ?8 u: N
more power.- `! }% A6 f* @
Will my vehicle run ‘cooler’ with an intercooler ?2 m5 B7 D/ G: j+ H& c1 }6 z5 `
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
L% B: `% n& \4 F8 c8 S! g; xrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
- R# x! y$ S& X% L u8 Qair passes out of the Intercooler over the air conditioning condenser and finally the
$ j9 l+ |4 C" o4 M N, F/ w, Rradiator. The poor old radiator is left with scraps of extremely hot air and then is- e( C# @ W- ^& u
expected to cool the engine. We don’t advise fitting them as hot Australian conditions% u2 L8 l' L+ N& t+ F4 q5 }
can often be the catalyst for engine heat problems.* V/ U, ^9 G2 o7 M6 ^' E. h
What will happen to my fuel consumption?
# z8 I8 h j" R# t8 f* yMore power generally means more fuel. With a diesel turbo system, fuel consumption2 c) G# ]3 Z M. y, M' }0 P% S
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
