 鲜花( 0)  鸡蛋( 0)
|
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. 6 q# x. s X2 n) h- Q" E
- n& i* P+ o, P6 R2 y
5 U/ x. ~* n6 {8 N9 [
Tech Sheet; c6 `4 O. o% W+ O! o6 Z; ?3 J
‘Frequently Asked’+ M# |& H v( K1 K% s' w2 `- X) }
‘Turbo Questions’(In no particular order)
. C! G @! z1 H. H' fYour turbocharger is engineered to match the specific requirements of the engine it is
# h7 K$ Q4 U) T# W9 {; b2 r5 Ffitted to. Each is dependent on the other to maintain optimum performance. Don't
. d0 w/ J& [2 g: b/ A. w4 Athink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The3 k2 a" _9 ^, z* |+ ]0 w" ~6 o1 B
turbo's requirements are similar to the engine’s. It is, therefore, essential that2 Z5 A9 w( S* h c: y# v5 X
scheduled servicing, using good quality oils and parts, is central to caring for your
$ C8 j# v) K; s6 d1 ?7 i" xturbo.
. T. r1 H0 J- N( I; t/ @In many instances Berrima Diesel receive turbochargers which have been
: I& n8 L$ T4 C( F4 J$ Fmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
8 j/ W- j+ }1 w7 TIncorrect fault finding is often caused by a lack of product knowledge. Many
9 }' c4 v; L3 K% e8 Y; R! Xcontributory items around the engine bay can trick the unsuspecting into believing the4 o6 z! i. p+ H9 L) O; T7 S0 r
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not7 D4 }2 r( a' F* B
diagnosed before a replacement turbocharger is fitted, the problem still exists!" v3 e8 S% Q' d+ s6 U9 v
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A {; F4 A0 _" p8 c% d
turbo can be killed in many ways.' }8 a5 } j$ L' L9 U
Foreign object damage results in either the air intake "compressor wheel" or exhaust/ z& J' r: d" R; T
"turbine" wheel being damaged. The former is often caused by someone accidentally
1 A K6 f6 G) f8 b. Jleaving a nut or other foreign body in the air induction hoses. Please be extremely
8 H- J9 W1 G" Q4 _careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,% T5 U, K! U: X7 m
this may be caused by part of an engine component, such as a piece of valve, exiting" k+ ^: n0 u# W& ]& |+ R+ l2 |2 h
the engine in rather a hurry! In both cases it results in severe turbocharger damage
( H0 t+ T- Q, k qinstantly.* T) S. j9 q% S. l) T
Turbochargers are simple in operation, but manufactured to precise tolerances as fine
- t0 \" W- v: Yas 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
7 e+ V4 c1 o+ e4 v, z$ c, ]turbocharger many times, including final assembly. The balancing methods and7 i, W+ N1 h4 C, ^) r
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
! I7 S6 A7 Y( ^* U+ f+ Ytolerances required for today’s high speed turbos. It is now common for; U6 K. ?# c: h" c9 S2 p7 d6 H$ P
turbochargers to spin up to 150,000 rpm +.
0 |& P5 u7 M. F* [5 Z) z' QThat’s approximately 35 times faster than most diesel engines rev at the red line!( X" ]+ O1 h% u5 c( Z2 J6 [5 U
Sophisticated machinery and highly trained factory staff ensure that the highest9 s) k1 e8 p5 [3 a! g6 t# O( c
standards are always maintained.5 ^# L3 H1 Y! Z+ p0 S
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
. t7 q% w5 Y( Y& Zto always allow the engine to warm-up fully, until the water temperature gauge
2 k8 x4 L* @) Freaches normal, before full throttle is used. Try to plan the end of your journey# w0 c9 ]4 ~+ S* k4 {' i
sympathetically. Don’t use full throttle or allow the engine to labour during the last9 ^" J( L- ?9 ]# Q
few miles. This will prevent excessive heat build-up within the turbo when the engine8 C( E |9 t. Z
is turned off. Also, when coming to a standstill, try to leave the engine idling for a* m2 u8 j# C9 |+ d9 P' {1 x$ N
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
T7 S" w1 n Y+ \8 g% yyour seat belt first and then turn off the engine. Never rev the engine just as the% C6 ?1 c% g) j4 ^+ F: D# R3 z
ignition is turned off. Remember the turbo spins at a far greater speed then the
) f7 x- \7 X0 ?' p7 y- {8 y7 Fengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
- _7 J. l- N; C9 nwithin a few seconds. In reality, none of the above traits will cause a turbocharger to
+ {* F t" }! Ffail immediately, but repeatedly over a long period, they could reduce the life of your
/ K: G; n( J: {( _3 e6 eturbocharger.
1 r0 C# e" c- f# ]3 U3 kIf it becomes necessary to seek advice about a turbocharger or a turbo related% [5 k6 L- M. L- v: N
problem, always rely on a professional. Berrima Diesel, together with DTS! T6 b i! Y+ o9 F: K
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
5 M+ z' n W0 q" g, p) v7 c1 B" eof the most experienced turbo installation companies in the world. We can advise
K$ v! M$ s% @5 l# s# j6 \8 Ycustomers with turbocharged 4WD’s on a wide variety of questions and issues2 q$ z3 n% s* W. d* ~; d
relating to owning and running a turbo car.0 _ a- S$ S/ f f9 U' G# N8 X; j0 D
It cannot be stressed too much how important it is, when purchasing turbocharger
* a% B+ S$ n2 ^" F4 _system, always to choose the top brand name -Berrima Diesel. Consider this. As with, b" C" q8 c- G5 J; ?. f( z6 A, o6 y
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
* c3 N- f9 C' [* w' GWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
9 q3 ]$ `! G& V" s" ^- pthat your short-term saving may turn out to be a long-term nightmare.
4 v) G* i2 _( H; T% [What is 'Boost'?. X( Q) e. B' ^: k
Boost is a term used to describe the increase in pressure, provided by the# f* A# V# b9 W% o" u# `2 A- q
turbocharger, to the volume of air, entering the engine. This pressure is expressed in
( b. \% O \ O8 L" U7 p3 d8 ma number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
* F; q( T: l) t7 k0 athing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa- q0 s3 L3 Y7 l N. }% G7 x# H/ v
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
& a' a/ X" S, i- v7 n4 f0 V1 Woutput is increased. This pressure increase is called 'boost'.
7 D% t& B J2 r# HHow does fitting a Dynamic Turbosystem effect the power of my, j# X, ?% C# z$ q3 Q
vehicle? o5 f, `9 a% [) M9 Z
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
- P; f6 p" ?, D' Iaround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
! j( x1 B6 Z! t9 YTurbo boost starts at approximately 750 R.P.M. and rises progressively to its
: {0 a: m) w$ a }7 ~+ Smaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this% z" a; e" `4 I% G
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
( U. I# i! e" {+ Z2 L! Uat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
, J$ F8 L6 {* d2 B7 Yno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
5 ^) p, K, t$ d/ r |! _; Xthan the standard vehicle at the same R.P.M.4 d3 p2 w7 w6 A9 M6 u
Can I fit a Dynamic Turbosystem myself and, if not, how long and
* F# D1 w1 A% nwhat is the cost of having it fitted for me ?
; Y! E4 W# f3 p9 KWhile most competent mechanics could probably fit a Dynamic Turbosystem,
: J7 z& S. r. H3 b a+ E: ytuning requires specialised knowledge. The lack of this knowledge could have4 K' [2 B& c: ~3 ^7 j7 t! M
serious consequences. In addition, warranty can only be provided on Dynamic& X0 z D, t6 f1 U& h2 B
Turbosystems which are installed by authorised facilities.
) f5 F4 M5 P( e, G+ dThe cost of having the installation performed by Andrew at Berrima Diesel is
# m& y- P* R4 S/ O4 D+ [9 ronly about 10% of the total purchase price. This provides a warranted, correctly7 X9 b# n$ V7 W3 x
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
: F u0 B) Z, Wperformed in one day.
% h/ i9 @) L( T4 H" R! G% C, RWhat creates the most heat? Fuel or turbo boost?9 j9 N( P" M. D' x
Diesels do not need an air control (eg. manifold butterfly valve. The only ones3 Q8 _+ }+ F p& Z9 f2 o: F+ Q7 C
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
: |8 @/ I$ ]0 h, L/ }: othe better. Add too much fuel to the equation and the exhaust gas temperature
o( u3 I# s- J1 Srises rapidly.
' }5 ^; W* {- n% p }What type of oil and how often should it be changed ?4 `% a3 V" o6 n
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic2 d N: z. t: t* Z4 Y$ q7 Q
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .; u. b+ j! D O9 `$ q8 l. W
Change oil at intervals recommended by the vehicle manufacturer.% |: X* h$ N' S) W
How long does a turbo last ?' i: [- C7 y7 n, L7 ?
On average, as long as the engine or longer with regular engine servicing and good
) D b" W/ R5 i) {quality engine oil.
0 P, C5 j( s5 kWhat is a ‘dump’ valve or ‘blow-off‘ valve ?; C, c! Z5 ~0 G0 Z+ b. t+ B
A valve which relieves boost-pressure between the compressor outlet and engine as3 v) O6 ~- x0 z0 A9 p3 z
the throttle is closed (Only required on throttle valve controlled diesels which are) k4 T1 T- _ v7 ~2 u
rarely seen these days). These are commonly fitted to hotted up petrol cars so it. {4 \( ]% a8 t3 Z% N1 F- o, D
sounds good changing gears among other reasons!
1 u, H' p9 A5 s/ v t/ O& g/ kCan I fit a turbo from another 4WD ?& {) F. @1 y" }" ~. R$ j" W$ x
No, virtually all turbocharger are different inside, even if they appear similar on the
3 i, A' t+ w# Z' Y9 n8 E; ?8 coutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
, T3 [) ]! i0 P" ^3 ]specification.6 ^; k( V: c# o" D) l6 r% e! d
Should I leave my engine ‘ticking over’ before it is turned off ?" w3 r$ k5 B% e6 j% H9 ^- @4 `) b
Not for normal every day driving, but still worthwhile if the engine has been under: `2 y) M6 f9 l4 O9 I1 |7 `
load or raced before being turned off. e.g. Towing a caravan or after climbing a long
# o3 j- S0 x X) N7 ]incline.
& i: p# X- T" k+ D2 |# f' fWhy is it important to balance a turbocharger ?; o1 h8 E( G. j; j- g
Without highly accurate balancing, vibration will create a whining noise, reduce
{& U/ j9 d6 e) r, I1 Dturbo bearing life and reduce turbo efficiency.
! Y4 B' V( k7 @3 W6 u" iHow much boost does my turbo produce?
: V2 ?6 x* R5 e& y6 wCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
/ z/ ~1 [6 _8 }8 k, k, f/ ^Intercooler turbocharged engines running upwards of 13PSI.. O& e% T( d5 i' ~6 N! @! ~
How many psi in one bar ?
3 Y7 d5 C4 ^7 S7 Y/ |- K! U" `14.7 psi = 1 bar." `: U O0 G& x }
Are all actuators the same ?
- m: N+ R) {, \' r7 {1 X+ BNo, each has a different opening pressure and rate.
/ w9 S0 u5 Y5 F1 i$ k- ?& eOil in the turbo inlet pipe - Should I be concerned ?
1 \3 h; b+ G5 M: \0 qA small amount of oil usually exists, drawn in from the engine's crankcase breather
8 t0 S* t1 D0 Csystem. High engine wear will increase the amount of oil found, and will require
7 T6 p8 P5 e, y6 @, f! N0 xfurther engine tests (not turbo).
6 G" `0 @" P8 ?; ~' R, t% eShould a turbo be serviced ?
' G" d2 V3 ?: u/ M7 T( {7 sNo specific turbo servicing is required, but regular quality engine servicing is needed
9 S+ `; S# @3 h$ `& a. ~' k; D; E8 rto reduce the chance of turbocharger problems.4 B! y& @3 F! `0 i9 U+ F4 k; P
What is a water-cooled turbo ?
C m# m/ u: A: {) J6 _5 y: VThe central part of the turbo, housing the bearings, is surrounded by a water jacket
3 ~+ [1 u u6 y4 f4 y) u8 c _through which the engine's water coolant is passed. This water continues to circulate
: E, J3 F0 j! ~6 M+ A, j* ^after the engine is turned off, cooling the turbo, and preventing heat soak. J ]5 H1 M- g
Do I need to up grade my exhaust ?4 \$ |1 z3 Y3 [$ `: y1 h8 j
Generally not. Our systems are designed to run utilising as much genuine component
8 Q0 y) q& k6 |. B; T& b% v" r: fas possible. Some systems on the market promote exhaust change as it is required by% |- p9 l# k3 \
that particular turbo. Doing so usually picks up more noise than performance.
5 X, c9 M2 V7 x6 d( H0 p/ hHow noisy should a turbo be ?% j+ g: w' v ~$ F8 p7 @5 P
Only an unbalanced, worn out or damaged turbo will produce any significant turbo" B1 b, v" n9 V' _
noise.( ?/ g4 b1 z) A1 b, B
What is an intercooler ?
6 N: A* H4 n* A, ]% v9 E& Z+ K0 VA special type of radiator which cools air before it enters the engine. As a turbo
. ]& `- j3 O% _compresses air, the air heats up. Power can be increased if the air entering the engine' s I* v) w# D' A. H
is cooler. The cooler air is more dense meaning that more fuel can be injected for, t7 M& A& \+ [: E
more power.
0 P: i* W9 g* ]( L4 G4 L# r8 @Will my vehicle run ‘cooler’ with an intercooler ?
7 v7 m6 \5 s$ n1 v! @9 \: xTheoretically, but not always the case! We commonly find Intercooled 4WD vehicles" p& P& f o0 ]+ B$ ?7 ~
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot0 [1 k1 O- f( M9 O0 a" i; ^
air passes out of the Intercooler over the air conditioning condenser and finally the
# ]( R) f0 S- o! M2 Vradiator. The poor old radiator is left with scraps of extremely hot air and then is
! b- @) T, N& l. ?expected to cool the engine. We don’t advise fitting them as hot Australian conditions6 B; b! z$ r' S+ B5 Q1 E9 v7 M
can often be the catalyst for engine heat problems.
$ i7 e( [" |# ?8 I3 _1 J5 sWhat will happen to my fuel consumption?* p4 t8 G( J: f& B$ z1 X( W
More power generally means more fuel. With a diesel turbo system, fuel consumption
8 T( _- G# g/ M0 Z( N$ L: Dstays generally the same and can become better under towing conditions |
|
楼主: 晓风残月
狗仔卡
发表于 2008-7-10 11:10
显身卡
... 
发表于 2008-7-11 09:19
