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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. 8 W) V/ s$ N$ q3 l2 N. a2 J" Q5 X
# `( n* U W6 V' H5 }2 Z' {' a8 ~" |6 a. j
Tech Sheet
7 c0 O7 q& K' D0 R) u‘Frequently Asked’. L: N& K" Q0 e- k7 z
‘Turbo Questions’(In no particular order)# |( t8 ~6 ?0 D5 E7 ]* E. C/ j; y
Your turbocharger is engineered to match the specific requirements of the engine it is) R1 c E1 p# R) s1 R; j2 S; z
fitted to. Each is dependent on the other to maintain optimum performance. Don't& Y6 N' C& Y/ A
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The) } X3 g# |. [4 O. e8 [- R) d+ d7 d
turbo's requirements are similar to the engine’s. It is, therefore, essential that O8 ^$ }, K# q4 f& W
scheduled servicing, using good quality oils and parts, is central to caring for your
1 ]3 f6 c( ] T: t! U8 e1 U8 A/ Cturbo.
$ A0 W' ` M( OIn many instances Berrima Diesel receive turbochargers which have been
8 F# j/ c* z, |7 m0 R# W# q" P) Kmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.$ c+ Z7 D# o T! G+ p& j
Incorrect fault finding is often caused by a lack of product knowledge. Many- k5 N: P: A1 b. B# ~8 h# {7 _
contributory items around the engine bay can trick the unsuspecting into believing the
5 Q8 S! ^; c( u& [; Uturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not7 z9 A) a. e% i$ Q& f) h
diagnosed before a replacement turbocharger is fitted, the problem still exists! T: s! V+ \5 J2 J, D& H
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A$ }# Y9 O1 u' P8 v* U P) h, [* J9 q. p
turbo can be killed in many ways.- l& t1 m* ]" W3 a; X( }" Q4 h
Foreign object damage results in either the air intake "compressor wheel" or exhaust
' q8 n: p% p" W& I h"turbine" wheel being damaged. The former is often caused by someone accidentally
5 ], T+ g3 D4 K* v `, Pleaving a nut or other foreign body in the air induction hoses. Please be extremely
' ]7 A0 E7 w. y7 ^9 ^careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
! H$ b. D9 c# F( ] }. kthis may be caused by part of an engine component, such as a piece of valve, exiting
( h* h& s8 C# g1 y! othe engine in rather a hurry! In both cases it results in severe turbocharger damage, w7 M. F* o8 V; F2 d E) A. |
instantly.6 ^! v* v0 \9 Y% E
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
1 {% J( S! z; t9 xas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
& M, g8 n `) \6 N1 s4 c% Kturbocharger many times, including final assembly. The balancing methods and
9 @, _) b. S2 a6 t* vprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine0 \2 j* O# l! G/ j
tolerances required for today’s high speed turbos. It is now common for
) U6 m* N9 A- J+ ?) v" r- \4 T" J# Yturbochargers to spin up to 150,000 rpm +.
. @% t* {- S3 j$ O: ]1 BThat’s approximately 35 times faster than most diesel engines rev at the red line!
7 I! M/ h9 K8 ]: W; wSophisticated machinery and highly trained factory staff ensure that the highest6 m; m3 b+ n f; J
standards are always maintained. q0 Y/ i" }- N+ ]' j u
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are0 D8 D" c8 {1 K6 Z, q! |8 u; D G
to always allow the engine to warm-up fully, until the water temperature gauge
$ f: R, U# T Q, g/ Y0 vreaches normal, before full throttle is used. Try to plan the end of your journey" y6 I' v1 a: V% r, ~. Q+ ]6 f4 w
sympathetically. Don’t use full throttle or allow the engine to labour during the last; U0 J3 h4 Y- I9 G
few miles. This will prevent excessive heat build-up within the turbo when the engine
' H5 \% F* A7 V( t( a4 ais turned off. Also, when coming to a standstill, try to leave the engine idling for a) f% f/ I5 }- e/ T
few extra seconds to allow the heat to decrease. No need for a timer though, just undo2 k; M! F4 c- J. [
your seat belt first and then turn off the engine. Never rev the engine just as the+ ?6 h& V1 @$ Y' y9 F$ D* V
ignition is turned off. Remember the turbo spins at a far greater speed then the5 R" Q/ t) x |! h% u; b: S+ W
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases: B" e: V& c; @0 G8 ^( U
within a few seconds. In reality, none of the above traits will cause a turbocharger to
+ C1 F+ N. x. I: O* ^% Jfail immediately, but repeatedly over a long period, they could reduce the life of your5 z/ g ]/ S: t% M6 q A' D
turbocharger.; H' x, W& P3 g
If it becomes necessary to seek advice about a turbocharger or a turbo related
4 t" J$ r/ t1 M( A! N% ]1 ~* Lproblem, always rely on a professional. Berrima Diesel, together with DTS# v/ g7 ?$ [& C8 X2 J: E- p
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one) P) W8 c1 y4 E" ]
of the most experienced turbo installation companies in the world. We can advise
5 @$ b% u' s0 Z @3 ~1 o; _customers with turbocharged 4WD’s on a wide variety of questions and issues& \* l' u5 W/ H1 p3 Y8 ?- p: C
relating to owning and running a turbo car.! I2 T9 _0 [% g0 S
It cannot be stressed too much how important it is, when purchasing turbocharger; l5 }1 [) q9 d) ?
system, always to choose the top brand name -Berrima Diesel. Consider this. As with. o) r6 n$ [5 i5 B) d" i6 ]
so many things in life, quality costs, and there are sometimes cheaper turbos for sale. }/ p4 b% G# D$ K
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk3 O% Z* M: ]+ |3 O6 @0 M! m2 F
that your short-term saving may turn out to be a long-term nightmare.
. g% v0 t% W3 u I& x. R9 cWhat is 'Boost'?! ^2 E# i* m3 K
Boost is a term used to describe the increase in pressure, provided by the# d0 C2 B8 S/ Q$ e7 W; o
turbocharger, to the volume of air, entering the engine. This pressure is expressed in, D8 Q* I8 @3 C {& P6 R7 k
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same' |7 J/ g8 b- O1 D
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
4 \3 Z" T8 T) v- Z& u; j) F# c, }* Z14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power* g5 ]5 D6 m1 w( S
output is increased. This pressure increase is called 'boost'.
$ q8 ?" C- d2 O' r- j' s+ N e5 x' fHow does fitting a Dynamic Turbosystem effect the power of my
7 V. J$ _9 e4 F% r3 }vehicle?. b2 ^* m* e2 _! |: D% D
Modern 4WD diesel engines, typically produce peak torque (pulling power), at: h+ b/ J" d" g, W' u
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
- }7 ~/ L; Z0 Y/ kTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
/ h9 o6 m; }" e9 ~! omaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this5 g8 Q. D& }; p1 e: u+ [% v3 c, w
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
( k' S' o% t" n7 X8 A- iat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
, {* g3 S/ o1 P4 X s1 eno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
* v" ~. s7 @ p2 T5 O) bthan the standard vehicle at the same R.P.M.4 g. ]" v6 O, p1 J- `
Can I fit a Dynamic Turbosystem myself and, if not, how long and3 {# j; u" [* {
what is the cost of having it fitted for me ?
8 E$ ^, Z4 m% L# HWhile most competent mechanics could probably fit a Dynamic Turbosystem,
% {* W( X- }; [6 v& j0 k9 Ctuning requires specialised knowledge. The lack of this knowledge could have& B& V! E- l9 T4 v- d) `5 a' Q' I
serious consequences. In addition, warranty can only be provided on Dynamic
" U7 n @, Q9 `7 PTurbosystems which are installed by authorised facilities.
- H. X9 L% p" P$ O0 _The cost of having the installation performed by Andrew at Berrima Diesel is
5 O' Q! Z! h0 i F8 u+ O( ?only about 10% of the total purchase price. This provides a warranted, correctly' O3 \1 a1 R) }1 D
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be( ~+ v0 W4 L) D9 v1 Z
performed in one day.
2 J7 r0 @3 i4 h* w* z9 `What creates the most heat? Fuel or turbo boost?6 _ x' w$ m7 x# W0 e
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
: F4 M0 P3 T+ d/ L# U: g! xrequiring a butterfly are vacuum operated governor pumps) to operate. The more air% C: f$ W' H4 R u
the better. Add too much fuel to the equation and the exhaust gas temperature9 {# l1 [$ {( t$ o4 Y" F9 s1 f( i
rises rapidly.5 U+ F7 M) k! g
What type of oil and how often should it be changed ?' c' t) V3 w5 w
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
8 p& ^" h6 t6 _: e, ^: c% V" _$ Fengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .3 s2 k) c- R/ n% l( I4 d1 V
Change oil at intervals recommended by the vehicle manufacturer.6 h1 a$ Y9 w7 Y( ^- o
How long does a turbo last ?
2 \% z z% V' f6 v0 q7 V* z EOn average, as long as the engine or longer with regular engine servicing and good
) H0 y* k5 o6 ^2 Y6 qquality engine oil.$ v# q6 v( s$ F" s- B! N
What is a ‘dump’ valve or ‘blow-off‘ valve ?( g/ E- o% D5 [ k( y" T; ]
A valve which relieves boost-pressure between the compressor outlet and engine as8 ^, Y; _& x' {1 |, A: G2 p* h
the throttle is closed (Only required on throttle valve controlled diesels which are; R5 S/ m2 K6 \# N
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
2 ^+ F' H( m& Asounds good changing gears among other reasons!4 D4 ^# m; S2 V
Can I fit a turbo from another 4WD ?
2 \. |; q5 B& Q! I* MNo, virtually all turbocharger are different inside, even if they appear similar on the
" N3 Q* y& u( F0 ~outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
, K9 u/ Q, P7 P+ E. Yspecification., ? Y0 C# [- J+ L: h9 d
Should I leave my engine ‘ticking over’ before it is turned off ?; D) K7 U) K) q' |* n1 w1 x1 u( O
Not for normal every day driving, but still worthwhile if the engine has been under
6 B; Z( z( ?8 Gload or raced before being turned off. e.g. Towing a caravan or after climbing a long
- z9 l7 D0 J/ T( ]incline.
, Q j1 D' s! P NWhy is it important to balance a turbocharger ?
! u/ y0 X5 X$ q0 C6 o7 m, fWithout highly accurate balancing, vibration will create a whining noise, reduce
# | A6 O) v- Uturbo bearing life and reduce turbo efficiency.0 x' y( F6 x# v* k+ h
How much boost does my turbo produce?/ \1 b1 h- t7 C; T( n
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with4 s0 E: `8 W( `. \* S# p1 L
Intercooler turbocharged engines running upwards of 13PSI.
4 k+ j2 x( `1 T2 t" MHow many psi in one bar ?
9 {, x$ [" \% u& d: _5 k- r' C: Q14.7 psi = 1 bar.' b' m$ q1 [9 p/ N1 E
Are all actuators the same ?
# V. m. c' V/ u5 lNo, each has a different opening pressure and rate.
t8 I' M( V" W3 mOil in the turbo inlet pipe - Should I be concerned ?5 n6 m7 W. F6 z: `" ?; |1 W8 G
A small amount of oil usually exists, drawn in from the engine's crankcase breather
; w1 X/ H( X* A. M5 C xsystem. High engine wear will increase the amount of oil found, and will require3 T2 k7 L8 i8 z& M0 y
further engine tests (not turbo).
7 L$ B9 }9 l$ ~Should a turbo be serviced ?2 I$ h8 r' Z+ m# Y0 P
No specific turbo servicing is required, but regular quality engine servicing is needed
3 Z O- a0 B& _4 [6 Q4 |to reduce the chance of turbocharger problems.
! ]4 Q: n9 b o0 ^3 N K9 AWhat is a water-cooled turbo ?
7 U) I' N H# q% S2 mThe central part of the turbo, housing the bearings, is surrounded by a water jacket
3 y7 S" ~9 x$ {. ~through which the engine's water coolant is passed. This water continues to circulate
1 n' H; Z+ g/ h) M) jafter the engine is turned off, cooling the turbo, and preventing heat soak.5 l- C. ?0 ^- T
Do I need to up grade my exhaust ?
5 B: ]( d" U( hGenerally not. Our systems are designed to run utilising as much genuine component+ ?& E% a7 j' q
as possible. Some systems on the market promote exhaust change as it is required by! Y5 H% v* w" o; T/ c
that particular turbo. Doing so usually picks up more noise than performance.
' x/ {6 D4 A' WHow noisy should a turbo be ?# ^- s$ A) P) l: H x. `4 n
Only an unbalanced, worn out or damaged turbo will produce any significant turbo
5 o1 i8 u0 N/ a! ynoise.
! o( q! l; B( o/ c( @3 S. g( U BWhat is an intercooler ?5 T5 @4 |& y$ b
A special type of radiator which cools air before it enters the engine. As a turbo
$ H5 g! y, S$ ?/ q: e c( dcompresses air, the air heats up. Power can be increased if the air entering the engine& V& A( ~. S$ n# b
is cooler. The cooler air is more dense meaning that more fuel can be injected for5 C+ z# r& H5 `* G; h# z2 e" y
more power.3 u3 ~! Q' b: T) C
Will my vehicle run ‘cooler’ with an intercooler ?- a5 y: Z. V: i- v0 d
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
. I! t B9 z: L- Xrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot
K! I Q q4 t+ @9 }0 I, Qair passes out of the Intercooler over the air conditioning condenser and finally the
2 ]! Z% Z* H4 o$ ]4 M8 mradiator. The poor old radiator is left with scraps of extremely hot air and then is
! R1 C# _9 d; c- g) ?0 O5 n8 W6 n! `expected to cool the engine. We don’t advise fitting them as hot Australian conditions
" F9 @8 g& O9 @7 k; S% H. r+ ncan often be the catalyst for engine heat problems.
4 d) J, e4 t' JWhat will happen to my fuel consumption?0 d2 i* Z- r E/ e
More power generally means more fuel. With a diesel turbo system, fuel consumption' }0 K1 e. }" W V! G! ?
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
