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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. 5 N1 v5 q0 A' a8 d, C8 ?
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Tech Sheet
" \! Y g. G* k: }‘Frequently Asked’
- u0 Y$ m2 c6 ]: o$ W( d) ~2 f9 \‘Turbo Questions’(In no particular order)6 |/ M4 [* x7 e" q+ R* X8 v+ p
Your turbocharger is engineered to match the specific requirements of the engine it is
9 T* T: T% w) r5 H/ |* jfitted to. Each is dependent on the other to maintain optimum performance. Don't
- q; W! y$ d) M5 h3 |+ e1 L& Pthink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The7 d) v" P. |" _2 ~
turbo's requirements are similar to the engine’s. It is, therefore, essential that
3 b @' u/ C8 B& tscheduled servicing, using good quality oils and parts, is central to caring for your
/ H/ d5 d- ^$ x4 g. f4 tturbo.
) @) `5 g7 y5 P) M {# h% u/ R9 zIn many instances Berrima Diesel receive turbochargers which have been( K# m: l9 x/ h+ z$ w. |
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.. d& O W2 O9 |
Incorrect fault finding is often caused by a lack of product knowledge. Many; ?' h o$ q* V$ H2 [0 _3 \- ?6 ?7 h
contributory items around the engine bay can trick the unsuspecting into believing the
! v4 l x4 w, x$ _; @turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not( Q# L% U/ I D6 O7 M
diagnosed before a replacement turbocharger is fitted, the problem still exists!* B, L/ r6 I" N( |/ N
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A4 R9 k8 @, U2 i# M
turbo can be killed in many ways.
6 j8 m! Y/ A4 F1 i/ k" g# `Foreign object damage results in either the air intake "compressor wheel" or exhaust/ {$ m( O9 Y! R% Z6 ]5 v6 [
"turbine" wheel being damaged. The former is often caused by someone accidentally
: r, @: T7 ^3 Q3 Wleaving a nut or other foreign body in the air induction hoses. Please be extremely
8 C p. f! U1 J2 L4 X% Acareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,: n) w* p: s2 o2 q6 B+ j5 J9 @
this may be caused by part of an engine component, such as a piece of valve, exiting
! [+ B2 ]" p3 v4 lthe engine in rather a hurry! In both cases it results in severe turbocharger damage
, I8 b7 n! Z& h, c- R' a# q6 Linstantly.4 l0 H9 {. V+ v2 E+ N, f
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
8 {+ l$ C; c( G4 yas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single6 }( ~4 u: E2 M: J2 V
turbocharger many times, including final assembly. The balancing methods and6 d+ Q, M9 [( e% {& v: D
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
, A- o- R0 Z" c& W$ M4 m( Utolerances required for today’s high speed turbos. It is now common for* E5 ]! a9 @1 ?0 O( @0 o
turbochargers to spin up to 150,000 rpm +.' {, r' A* I. t1 m3 H Z
That’s approximately 35 times faster than most diesel engines rev at the red line!9 I4 J+ |! M- x0 K' P! P4 n
Sophisticated machinery and highly trained factory staff ensure that the highest
3 `! O9 k3 G3 R$ o/ b2 H. H& tstandards are always maintained.6 b8 l. G! N) X" P$ H* O! [
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are: S c2 Z B) C v
to always allow the engine to warm-up fully, until the water temperature gauge
8 a; i6 L4 W# D! M5 ]$ ureaches normal, before full throttle is used. Try to plan the end of your journey
% H) I3 N5 V wsympathetically. Don’t use full throttle or allow the engine to labour during the last; Z, I# l) \ t+ R7 c( j; B/ h
few miles. This will prevent excessive heat build-up within the turbo when the engine
% |$ a. P7 h. G6 W! a* z+ A) kis turned off. Also, when coming to a standstill, try to leave the engine idling for a
1 L- I; w# l: i/ K6 w. t3 xfew extra seconds to allow the heat to decrease. No need for a timer though, just undo
, s- ~# P" y- Q7 \5 z$ ?your seat belt first and then turn off the engine. Never rev the engine just as the
) d4 `4 J. o' }- N( U! P" Mignition is turned off. Remember the turbo spins at a far greater speed then the
- ?; o: F4 c0 n' @engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases" `) C+ p2 W- _' E7 d7 b \
within a few seconds. In reality, none of the above traits will cause a turbocharger to
3 _; p) o& {5 q5 b9 Dfail immediately, but repeatedly over a long period, they could reduce the life of your
3 N `% o% H% a. l" N" Zturbocharger.
v/ f2 D! u3 y& c( }If it becomes necessary to seek advice about a turbocharger or a turbo related1 k) q; x) d! U2 E/ @% o7 B
problem, always rely on a professional. Berrima Diesel, together with DTS9 o& I" ?* }, Z; a: n; b
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
/ Y: D! E, ~9 S& Q' uof the most experienced turbo installation companies in the world. We can advise' H% ?& S8 Q3 w4 Y' z& n/ `$ V9 Y
customers with turbocharged 4WD’s on a wide variety of questions and issues
/ H* B9 @3 f0 o& R: ]relating to owning and running a turbo car.
2 w" C* o7 J% T: w" a2 M% QIt cannot be stressed too much how important it is, when purchasing turbocharger1 y) c8 L0 u3 v! O# u- R5 n
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
! Z2 i" k- u+ g. R7 c4 lso many things in life, quality costs, and there are sometimes cheaper turbos for sale.- l4 ?/ B4 a! j5 V/ C. A
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk% }; F% R) ^- `- w( K
that your short-term saving may turn out to be a long-term nightmare.
% I& J3 ]$ x! E6 j3 J; C, s+ |What is 'Boost'?
6 a0 t6 D- V$ ^; Y; u* j; i6 e7 [" JBoost is a term used to describe the increase in pressure, provided by the6 ~* l' @' ~# X; D" x
turbocharger, to the volume of air, entering the engine. This pressure is expressed in, Z; s' \' o) x
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same `2 M7 X W* P8 ]% J- M
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
* ^' A6 x, J2 o: k14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power8 m% _- q) T2 e; V* U6 n) o' U
output is increased. This pressure increase is called 'boost'.% G8 J% h6 r2 n1 |3 h3 h
How does fitting a Dynamic Turbosystem effect the power of my& g$ m: m& T" u# ]# A' Y; d
vehicle?
% g6 r, [# U/ IModern 4WD diesel engines, typically produce peak torque (pulling power), at; Q8 A7 m8 M% b& u( h6 J& D7 h
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
8 E% E/ H7 s( |+ T' V( m; G, P# lTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
' V2 H7 \$ T7 f$ l1 vmaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
1 b% t7 ? ?/ _0 mpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,* _4 W" W/ G+ K, E0 q7 N0 G1 G5 K( [
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
* ]; ?0 u8 Y3 N! i: W9 Mno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
- N1 I a; v+ I3 H6 @/ i4 uthan the standard vehicle at the same R.P.M.
" g4 f' m# D5 u% m, K! ~Can I fit a Dynamic Turbosystem myself and, if not, how long and; d4 [. g& j3 p, N1 C# p$ c
what is the cost of having it fitted for me ?0 J8 ~& o$ E7 K( @0 Y8 J, |
While most competent mechanics could probably fit a Dynamic Turbosystem,
' D7 N1 T) W# C0 p/ btuning requires specialised knowledge. The lack of this knowledge could have# r3 w& l8 }; b P$ L+ u
serious consequences. In addition, warranty can only be provided on Dynamic
1 n; Y7 t/ [' q! eTurbosystems which are installed by authorised facilities.2 Q. s: m. g0 H9 v
The cost of having the installation performed by Andrew at Berrima Diesel is
5 {( V* L/ o N6 t; Sonly about 10% of the total purchase price. This provides a warranted, correctly. K7 g. P0 n7 V; O0 C
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be7 N7 I7 V( M! R3 r1 z4 {
performed in one day.
7 A L# e3 M: ~- A/ d2 }What creates the most heat? Fuel or turbo boost?- [ E- b. \6 A* ^5 d5 R
Diesels do not need an air control (eg. manifold butterfly valve. The only ones+ X8 l) b3 ?6 @
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
5 X; X2 ^9 X+ U0 r$ x: Sthe better. Add too much fuel to the equation and the exhaust gas temperature
9 z+ N. M8 D Q& P# Xrises rapidly.
, [* h S! q1 m$ C2 FWhat type of oil and how often should it be changed ?
; P7 N5 `8 V& P7 D0 B( jTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
( ]+ ~9 y. V1 T+ m3 sengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .: N, C9 K& b5 W% w; ~1 X
Change oil at intervals recommended by the vehicle manufacturer.7 V* D; d# \ l3 s1 A; v
How long does a turbo last ?
2 b. c; G; b) o% t% E" {On average, as long as the engine or longer with regular engine servicing and good/ l' n+ {2 U, g5 ]3 b/ ^: I: E
quality engine oil.& q/ ]* O/ w# r0 Y
What is a ‘dump’ valve or ‘blow-off‘ valve ?
' S, _* c. u9 q h: r: T2 ^A valve which relieves boost-pressure between the compressor outlet and engine as+ {/ o0 n" v" p6 W
the throttle is closed (Only required on throttle valve controlled diesels which are( W0 ^6 I' {- B: T9 y2 U) i
rarely seen these days). These are commonly fitted to hotted up petrol cars so it) Q7 p2 N5 ?7 I% l% h
sounds good changing gears among other reasons!
- w+ P6 C; J. O3 ]8 G' A1 B) jCan I fit a turbo from another 4WD ?/ Y- x3 x7 f a# y
No, virtually all turbocharger are different inside, even if they appear similar on the4 S% e2 T6 A0 V/ ~. k
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
: a3 J2 t, _4 [; r0 \( Rspecification.+ Y* [( Y$ T# h- C9 o6 A
Should I leave my engine ‘ticking over’ before it is turned off ?
5 y( J/ |8 h" I4 F+ pNot for normal every day driving, but still worthwhile if the engine has been under
0 v7 O6 F" o; R" {7 fload or raced before being turned off. e.g. Towing a caravan or after climbing a long
1 C3 u* m0 n5 \2 ~9 c) cincline.$ s, B( i, R+ `1 E4 y
Why is it important to balance a turbocharger ?
6 L4 V! a. ~8 m/ [Without highly accurate balancing, vibration will create a whining noise, reduce% _( w+ e" D& `, M3 ~* B
turbo bearing life and reduce turbo efficiency.
9 \4 f1 f) D( ^* wHow much boost does my turbo produce?6 c4 N7 B- _( ~
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with( u6 }5 M3 j$ q2 d8 b9 j
Intercooler turbocharged engines running upwards of 13PSI.
8 k9 n# \0 ? E; L0 q4 ZHow many psi in one bar ?
3 G" }; E7 j( d1 Y14.7 psi = 1 bar. G( y: F+ ]; \: B
Are all actuators the same ?9 q1 R1 \1 n# h0 Y( `1 g: |
No, each has a different opening pressure and rate.
$ ~+ i. @; [' P! N: \Oil in the turbo inlet pipe - Should I be concerned ?( ?; x& C6 t$ y- M: f3 K
A small amount of oil usually exists, drawn in from the engine's crankcase breather! m9 _ l1 U) ?3 s u4 x
system. High engine wear will increase the amount of oil found, and will require4 I' @/ |7 T j2 m4 R! B; O, ?
further engine tests (not turbo).* \% D1 t- q, R; e* o2 F
Should a turbo be serviced ?
- W' Z' h: T3 V7 L- D7 v1 S: jNo specific turbo servicing is required, but regular quality engine servicing is needed
+ q: j4 M- L0 h# Sto reduce the chance of turbocharger problems.
* D9 @" ?4 j( r5 |What is a water-cooled turbo ?
! ?9 Y" c% n T& K4 a/ OThe central part of the turbo, housing the bearings, is surrounded by a water jacket
; w2 M+ h) b- [, h; ?4 \1 a' Xthrough which the engine's water coolant is passed. This water continues to circulate$ }7 P* `: @) E; u$ m9 R! Q
after the engine is turned off, cooling the turbo, and preventing heat soak.
, H4 `, j7 `5 g$ Q" uDo I need to up grade my exhaust ?
9 M% g; L# O* D" U1 v# V# t+ { Q& ?Generally not. Our systems are designed to run utilising as much genuine component2 `8 y* }: g: o9 \6 @4 y
as possible. Some systems on the market promote exhaust change as it is required by/ |# e' c* _0 X) x, d! L
that particular turbo. Doing so usually picks up more noise than performance.$ d; G9 T* C+ x4 a$ X0 c
How noisy should a turbo be ?
4 G! [; u* R7 i D$ \! k6 D$ BOnly an unbalanced, worn out or damaged turbo will produce any significant turbo
- P' [* ^; n, s1 F$ znoise.2 W! o: f% E/ c! P: k K( w" t- k- \
What is an intercooler ?
6 u" _ } _: D* G/ V% C; MA special type of radiator which cools air before it enters the engine. As a turbo
$ }5 x4 K" v* F& I. s* |+ kcompresses air, the air heats up. Power can be increased if the air entering the engine# d0 e7 f3 c* G* `7 L6 ^/ y
is cooler. The cooler air is more dense meaning that more fuel can be injected for0 H* C# N, S1 M, x. Z9 l$ r
more power.+ t5 y, _7 I! g; N7 [: S6 e: f
Will my vehicle run ‘cooler’ with an intercooler ?
: d, b3 U% O8 s8 H7 T( S; b A: lTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles
- i! U+ W" ~. v& wrunning hot due to over-fuelling and radiator restriction. Restriction meaning that hot" U9 T9 z. L& z& N# j
air passes out of the Intercooler over the air conditioning condenser and finally the. _7 r7 C1 j3 ~
radiator. The poor old radiator is left with scraps of extremely hot air and then is" K7 l. ^4 t* G1 D" j% y
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
) g; ~8 t# n7 V) h) Fcan often be the catalyst for engine heat problems.7 Z$ Z @6 @. ]( r; I0 ~' @
What will happen to my fuel consumption?
7 ~7 [% g$ f" o: l1 v/ b a: y, lMore power generally means more fuel. With a diesel turbo system, fuel consumption
" O0 r% l' d8 Y( z% k8 i2 Y, m- rstays 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
