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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. ! _' _! R C2 F+ H3 A1 a
1 J" M3 y8 L3 f" N0 d
+ r+ H; a# t0 _" V; D; p+ KTech Sheet( a& t4 D0 A. m2 U$ Y+ X% g( k1 w' S0 G
‘Frequently Asked’) }% N8 u; m' c. v( v, x
‘Turbo Questions’(In no particular order)
8 P! h* J4 o% t' K/ \! gYour turbocharger is engineered to match the specific requirements of the engine it is5 G& I* b5 E; ^ B& F5 K2 @1 r2 p; q6 s
fitted to. Each is dependent on the other to maintain optimum performance. Don't
D4 Y/ u! X+ y' cthink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The# f) G8 i- C% h3 h- p: i; ~
turbo's requirements are similar to the engine’s. It is, therefore, essential that
+ x- W6 [' @0 y7 dscheduled servicing, using good quality oils and parts, is central to caring for your N6 T6 G& p4 h- T8 \: N5 k
turbo.
5 a2 t5 E7 r+ [2 l$ h/ f8 {In many instances Berrima Diesel receive turbochargers which have been9 I. ~4 [. ^4 M& M
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.5 M) F0 ^0 q! a! @
Incorrect fault finding is often caused by a lack of product knowledge. Many
3 }1 n" K3 ~ M; M7 Ucontributory items around the engine bay can trick the unsuspecting into believing the
7 F4 v, J3 u3 W" P: k! Eturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
" }. K) m6 X: c9 _' X! w' ?diagnosed before a replacement turbocharger is fitted, the problem still exists!
: `- S |# k e- H. yWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A) J7 Q% Y+ u6 x* o" V' |5 u$ ~
turbo can be killed in many ways.
; d- d1 R3 [4 T# zForeign object damage results in either the air intake "compressor wheel" or exhaust& r8 v0 |( H. |4 Y9 O+ c: y6 {. k
"turbine" wheel being damaged. The former is often caused by someone accidentally
2 l4 r1 P. c1 e6 E% ?leaving a nut or other foreign body in the air induction hoses. Please be extremely7 T+ W5 v8 K8 `0 u4 R+ c3 Q8 S
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
% b* N2 \) l' H8 o% Qthis may be caused by part of an engine component, such as a piece of valve, exiting, L/ m$ C! u4 m" D8 B* c9 ^! c: ]
the engine in rather a hurry! In both cases it results in severe turbocharger damage: {" g$ N; V. a3 ?
instantly.8 k! Y. P i2 B) [
Turbochargers are simple in operation, but manufactured to precise tolerances as fine( G3 L) D' }5 N8 `
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
1 T0 @; U+ X( ]. Gturbocharger many times, including final assembly. The balancing methods and# c1 Q% f' {5 @8 F1 j: E; S! X
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
! D) {4 e! Y! l ]tolerances required for today’s high speed turbos. It is now common for- j; h6 c' D4 ~5 B' f
turbochargers to spin up to 150,000 rpm +.
+ p9 Q( A' |, X! o3 J f9 YThat’s approximately 35 times faster than most diesel engines rev at the red line!
1 N4 r Y; ]8 XSophisticated machinery and highly trained factory staff ensure that the highest
O( `* @. D! d5 B1 sstandards are always maintained.
0 g9 Q' K3 z0 n! R) u/ D/ y$ H& P: j/ eUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are y& J" u: ^# l& R- [$ c" V
to always allow the engine to warm-up fully, until the water temperature gauge C/ l% j X. [4 t7 [1 [0 `
reaches normal, before full throttle is used. Try to plan the end of your journey8 k# p/ ~$ D8 ?- W$ y, d
sympathetically. Don’t use full throttle or allow the engine to labour during the last
& u2 y' R" U/ L% L% k$ dfew miles. This will prevent excessive heat build-up within the turbo when the engine# D2 y5 H3 b T1 v. Z; N9 u3 B
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
# S# w6 G0 b2 C: i- G4 ifew extra seconds to allow the heat to decrease. No need for a timer though, just undo X& f' n8 T# ^3 z
your seat belt first and then turn off the engine. Never rev the engine just as the0 f% B7 [0 E' ~) _4 S# E# N$ W
ignition is turned off. Remember the turbo spins at a far greater speed then the4 E( M& H3 ~' u8 w! K
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
- F# [4 k& X0 k. |* V8 U2 T Qwithin a few seconds. In reality, none of the above traits will cause a turbocharger to3 y. Q: i8 P5 P% w' r
fail immediately, but repeatedly over a long period, they could reduce the life of your. P2 E! M% a% ^ {
turbocharger.1 m( q& Y2 n6 R5 F
If it becomes necessary to seek advice about a turbocharger or a turbo related
/ ]7 {9 F% d/ k' \; D+ eproblem, always rely on a professional. Berrima Diesel, together with DTS0 ]% p% c; o+ d" ]
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
7 ], {( R* }) I( tof the most experienced turbo installation companies in the world. We can advise
5 k# i9 X* Q/ Ccustomers with turbocharged 4WD’s on a wide variety of questions and issues
4 Q9 R5 L- _% }* }: ^relating to owning and running a turbo car.4 {/ w1 G/ h5 `5 |; n
It cannot be stressed too much how important it is, when purchasing turbocharger+ ~+ @. m. X' w4 W- G
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
+ H8 C' ]- n% `8 @0 wso many things in life, quality costs, and there are sometimes cheaper turbos for sale.2 V/ H! z+ P% q, w% Q/ H2 n
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
$ q4 b9 I! n# ^2 ~1 d0 ^7 Jthat your short-term saving may turn out to be a long-term nightmare.
# Q% C" g+ {4 x. M5 JWhat is 'Boost'?# C# h* |9 G# ^
Boost is a term used to describe the increase in pressure, provided by the
& d# c2 ^( ^$ Zturbocharger, to the volume of air, entering the engine. This pressure is expressed in
1 r- y! }- R) H. o pa number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
8 K! r, j J/ R( P3 m, ]% i9 nthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa" x' P! S, [' c9 P3 o+ ?
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power. T+ o! x Z" X( A. k2 C. i
output is increased. This pressure increase is called 'boost'.
: ~1 U' `9 r) w- ]/ A% wHow does fitting a Dynamic Turbosystem effect the power of my
' @5 d; |4 m9 Z! u( l4 cvehicle?, r4 B, G2 Y3 v
Modern 4WD diesel engines, typically produce peak torque (pulling power), at" g( C4 h1 b2 t8 W. @$ |/ a
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.* K' q& A) i/ P( y
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its3 h2 E+ E+ ]% g/ n9 Y3 w/ x
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this' k! _% [% y9 D# `5 U, }; x# h
point, the percentage torque increase of a correctly tuned installation is approx. 40%, u1 l. l0 c+ v# S, R9 M
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At* {3 T- V5 s, b; r. }3 r' {( }
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
& ?9 i8 _# S( {9 L0 h: M; T2 [than the standard vehicle at the same R.P.M.
: Y9 J$ b( V2 W- F3 C2 s8 @4 zCan I fit a Dynamic Turbosystem myself and, if not, how long and
& O$ v9 Q0 W) m7 ~1 Z Lwhat is the cost of having it fitted for me ?) G) `: `, y' G2 ]. Z6 J, w
While most competent mechanics could probably fit a Dynamic Turbosystem,! q& J- Q: @ s) J! F" a( B
tuning requires specialised knowledge. The lack of this knowledge could have
2 u$ P6 {3 X8 Z' n+ |" ^+ H# k1 {serious consequences. In addition, warranty can only be provided on Dynamic0 r9 ?; g2 Z- s* j+ r3 t
Turbosystems which are installed by authorised facilities.5 B3 V( Y5 b' @5 e* w
The cost of having the installation performed by Andrew at Berrima Diesel is& ~! t4 Q+ W4 k0 M' i" c/ ]: x1 d
only about 10% of the total purchase price. This provides a warranted, correctly
' |4 x6 f2 {) c. gtuned, "no hassle" installation for the customer. All diesel vehicle installation can be$ t3 h$ j; w0 Z+ g" {; U: c" |! {' W
performed in one day.+ H. p3 p2 l6 @( k$ h. n: {
What creates the most heat? Fuel or turbo boost?
5 z4 J$ a$ U7 R7 ~Diesels do not need an air control (eg. manifold butterfly valve. The only ones: ~" M( ~# v& x% S. s& E* M
requiring a butterfly are vacuum operated governor pumps) to operate. The more air* x" _. p! ?* p6 X9 A3 r1 S
the better. Add too much fuel to the equation and the exhaust gas temperature
6 a- I; J- H- a1 }9 Rrises rapidly.
- C- ?& b% c! L3 ZWhat type of oil and how often should it be changed ?2 p3 c$ D% K" C5 V* H
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic6 h8 K$ F) G5 W; o0 H. G2 t" ~" ]
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra ./ Q, m! e7 @/ L" c. Y
Change oil at intervals recommended by the vehicle manufacturer.1 `0 Z1 e5 P0 x, z# v# U
How long does a turbo last ?
/ \5 I' a* Q( Q% }4 D2 `On average, as long as the engine or longer with regular engine servicing and good
7 ] T3 d# ]- q$ Gquality engine oil.
4 I# L! I; a" m/ k) y4 vWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
$ x! h# k c5 b2 X) K K2 K2 RA valve which relieves boost-pressure between the compressor outlet and engine as. y7 _( y/ P: Y5 C
the throttle is closed (Only required on throttle valve controlled diesels which are4 ?4 y; F" p# I2 D
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
0 d4 `' k+ i1 k: `! m! P* }sounds good changing gears among other reasons!" V" \! ?: N h
Can I fit a turbo from another 4WD ?
/ J0 S+ H8 n) ^& }" E- eNo, virtually all turbocharger are different inside, even if they appear similar on the
- g0 _# z( U- A: C5 ~: z* Goutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the( j6 E$ r5 h- j$ K2 z
specification.
# L4 }% Q) Y: RShould I leave my engine ‘ticking over’ before it is turned off ?% | v8 W# \6 T: b2 I
Not for normal every day driving, but still worthwhile if the engine has been under' H, L! g0 m0 Y7 `1 |
load or raced before being turned off. e.g. Towing a caravan or after climbing a long) M9 r* o. U; n; z/ {0 H9 \
incline.
% i% c% H8 m5 l2 UWhy is it important to balance a turbocharger ?
7 p: M# I' s% k. b* m! `, XWithout highly accurate balancing, vibration will create a whining noise, reduce
% X6 @; U8 ]9 w+ [: Q! Sturbo bearing life and reduce turbo efficiency.
: g4 J' k1 h! i& r! zHow much boost does my turbo produce?2 E0 Z% ]+ e' D! j& z% z. [) O4 P
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with% {; i V$ Z, t1 L3 D
Intercooler turbocharged engines running upwards of 13PSI.
: C4 N+ g$ ?+ x" o; HHow many psi in one bar ?9 ~3 o, a0 U9 h2 G; }
14.7 psi = 1 bar.
* c5 c5 {( K: o% S% z- [; e. o1 sAre all actuators the same ?' d2 T7 f8 Q% M2 @* i4 T
No, each has a different opening pressure and rate.
( G. | b) w7 F; c$ u6 n' IOil in the turbo inlet pipe - Should I be concerned ?! q7 y9 B& D1 f, F& y4 k
A small amount of oil usually exists, drawn in from the engine's crankcase breather
) W; z2 Z/ R8 \1 wsystem. High engine wear will increase the amount of oil found, and will require
" V, @' G( r, c! _further engine tests (not turbo).
% N" i3 R1 \" {: `9 I; g. a" MShould a turbo be serviced ?, r/ J* a; C9 |* z8 M# z0 {7 a
No specific turbo servicing is required, but regular quality engine servicing is needed
' b5 N+ b u+ z. Wto reduce the chance of turbocharger problems.
/ P& R; D0 h+ n* FWhat is a water-cooled turbo ?
! {7 J l$ b8 j+ x; W8 h! n/ }7 F8 YThe central part of the turbo, housing the bearings, is surrounded by a water jacket; E8 H) F% V% l& x/ h4 g+ P
through which the engine's water coolant is passed. This water continues to circulate2 t1 d' u. {, K/ k8 r
after the engine is turned off, cooling the turbo, and preventing heat soak.
1 Q1 b1 M) ?0 h2 M r6 E$ tDo I need to up grade my exhaust ?" V) H. u* r1 k4 g* G+ x
Generally not. Our systems are designed to run utilising as much genuine component# r6 a7 ?& g# s: K6 \6 Y
as possible. Some systems on the market promote exhaust change as it is required by
8 `) l! {$ G/ b$ Kthat particular turbo. Doing so usually picks up more noise than performance.8 F/ u( [! J% y
How noisy should a turbo be ?1 m* I5 t J3 Y/ |
Only an unbalanced, worn out or damaged turbo will produce any significant turbo# _& y/ k% m o( ]$ F
noise.
+ G( X! X$ M7 ?1 L. d+ C( y3 M, |What is an intercooler ?
8 t) Q }( @! j2 FA special type of radiator which cools air before it enters the engine. As a turbo" d' \: k' X# f$ W% X( C: v" h9 F; b
compresses air, the air heats up. Power can be increased if the air entering the engine5 Q7 I# s& ~" u7 n
is cooler. The cooler air is more dense meaning that more fuel can be injected for" f7 D1 ]6 u6 M# v: I. n- B* u# k; ]
more power.
+ _% k; x( f/ s7 u- VWill my vehicle run ‘cooler’ with an intercooler ?) s0 r% G( }. u3 g6 Y/ _7 X6 ~
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles
% {8 x) `9 H, @running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
6 ? z8 k2 b5 N$ P( Jair passes out of the Intercooler over the air conditioning condenser and finally the% g8 s$ x6 R6 K8 _+ P
radiator. The poor old radiator is left with scraps of extremely hot air and then is" P$ T" [2 u( r9 D- ]* L$ A# j
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
0 n1 @+ v$ ] j; i! `can often be the catalyst for engine heat problems." ?; i; d. e3 o" I1 T3 C. \& I" q
What will happen to my fuel consumption?( n) x% i8 q; T6 Q% [+ H
More power generally means more fuel. With a diesel turbo system, fuel consumption, U6 a, Q; l1 y! r! x! O+ ]
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
