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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.
9 t& S* s7 @% O" }$ y" N7 g3 w9 M4 _2 v# O3 z
, h n$ V. i/ BTech Sheet
% l5 f; U2 E5 u: r8 w" |‘Frequently Asked’
$ z& R: ?/ }8 M* W‘Turbo Questions’(In no particular order)
% E! z/ I9 P E5 e E0 \8 @Your turbocharger is engineered to match the specific requirements of the engine it is! ?- g3 Q0 E: p0 R( Z
fitted to. Each is dependent on the other to maintain optimum performance. Don't; p/ t; S# M- _1 k+ v% Y
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The3 \; g9 s. [0 r. [& C
turbo's requirements are similar to the engine’s. It is, therefore, essential that3 [9 O5 ~) h, s" e3 w, B0 I1 T
scheduled servicing, using good quality oils and parts, is central to caring for your6 y3 B* y; j1 v* {
turbo.( B) k! J* \2 m. r. C5 l
In many instances Berrima Diesel receive turbochargers which have been `& L: ~4 G U/ [8 S8 j
misdiagnosed as having a turbo problem, when actually the turbo is not at fault., M9 X# q+ B' Z2 P! d
Incorrect fault finding is often caused by a lack of product knowledge. Many
1 D i8 |" S; E+ v; Icontributory items around the engine bay can trick the unsuspecting into believing the
* F Y$ u1 _: Z: v# Eturbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
8 A9 V. P0 B" n0 y7 [- idiagnosed before a replacement turbocharger is fitted, the problem still exists!
/ U8 e2 o ^1 Q, d9 T# n+ W* {We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A6 H0 |3 v+ f' `" ?7 R
turbo can be killed in many ways.
, B& U. k- b8 i7 l& Y ZForeign object damage results in either the air intake "compressor wheel" or exhaust
0 m2 A" \ O2 |1 `( b' N0 q"turbine" wheel being damaged. The former is often caused by someone accidentally" @7 T7 i$ g4 e9 Z: k
leaving a nut or other foreign body in the air induction hoses. Please be extremely
+ t6 U* a. l G3 r5 a Acareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,
, V, e' Z. G3 b u9 Y! k. |this may be caused by part of an engine component, such as a piece of valve, exiting C' n* q/ j" ~0 ?- u" L4 ?3 {
the engine in rather a hurry! In both cases it results in severe turbocharger damage. X; ~2 p" Z+ \% h
instantly.3 D' B; P6 |# {$ I! |4 ?
Turbochargers are simple in operation, but manufactured to precise tolerances as fine) R/ I6 g* x9 s( M4 l- g
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
( v6 I1 I3 e, @# m, u8 X( [turbocharger many times, including final assembly. The balancing methods and& E6 \8 {! `- b; m7 d; Y
procedures are unique. Without them, no turbocharger can be balanced to the ultrafine
( g. ^% N) @& }2 i& ftolerances required for today’s high speed turbos. It is now common for# S- k5 i( k1 a( Z7 [
turbochargers to spin up to 150,000 rpm +.
7 k) Y- J& z0 k' g/ Q% MThat’s approximately 35 times faster than most diesel engines rev at the red line!
9 \3 M0 T6 n DSophisticated machinery and highly trained factory staff ensure that the highest
. V4 g B# o' |standards are always maintained.8 ~3 Q$ ^# }/ \/ [/ g) A( q+ t
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are( x { e# _4 ~% ^$ Z+ l8 Q/ t
to always allow the engine to warm-up fully, until the water temperature gauge# E0 }2 C$ K( x. U& H
reaches normal, before full throttle is used. Try to plan the end of your journey r6 D5 j1 k# `7 G% v2 P
sympathetically. Don’t use full throttle or allow the engine to labour during the last+ j7 d+ W5 \/ o+ m7 [( x5 ]+ n3 P, B/ O
few miles. This will prevent excessive heat build-up within the turbo when the engine" P# } x# K* G7 S# `, [$ r
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
' v1 g- v3 _% X; U0 ?$ V" @few extra seconds to allow the heat to decrease. No need for a timer though, just undo3 R+ T' H% v* E, A" n
your seat belt first and then turn off the engine. Never rev the engine just as the; f* T& u7 e5 b
ignition is turned off. Remember the turbo spins at a far greater speed then the+ _9 F, S( _7 l( H3 z
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases/ z7 O( R& j, Y0 X; B6 D8 A
within a few seconds. In reality, none of the above traits will cause a turbocharger to) `2 x, Z: o4 h! X& P3 E5 A! j
fail immediately, but repeatedly over a long period, they could reduce the life of your
3 V7 \. \5 _1 X1 w- b% Tturbocharger.
. A% _' i1 G+ B9 xIf it becomes necessary to seek advice about a turbocharger or a turbo related% u! P, R1 v" z' z% o
problem, always rely on a professional. Berrima Diesel, together with DTS) p. n1 q1 }1 K+ h7 x
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one0 K* C$ R9 l! p
of the most experienced turbo installation companies in the world. We can advise
4 o h7 f" X' h, [3 hcustomers with turbocharged 4WD’s on a wide variety of questions and issues) |- W% n$ m5 q" \
relating to owning and running a turbo car.. N7 ]3 h$ Q; R4 j) e p& }
It cannot be stressed too much how important it is, when purchasing turbocharger9 f7 x. A+ ~' j" b
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
) f$ z' g# h9 K1 x8 Qso many things in life, quality costs, and there are sometimes cheaper turbos for sale.+ l9 E6 _* `6 ~, {
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
9 V4 `0 q2 O, ethat your short-term saving may turn out to be a long-term nightmare.2 S4 ^9 ~) F/ S) K. X* g j
What is 'Boost'?9 n! v J+ K0 x/ g( q" U% E/ }
Boost is a term used to describe the increase in pressure, provided by the
% M( S Y7 N* P* g* `" g D; S; vturbocharger, to the volume of air, entering the engine. This pressure is expressed in" R, w3 s2 K2 ~0 m, x8 t; K7 @2 A
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same: d1 d% t! b; s; G
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa3 ~/ y( S$ d# ^0 _; _
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power
0 M- q9 e5 [/ n) b, g3 `output is increased. This pressure increase is called 'boost'.$ C+ p' _% V0 `
How does fitting a Dynamic Turbosystem effect the power of my; c" Z& m9 `$ c t/ k9 w# B
vehicle?1 W; v3 P( `* |: m d
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
5 y0 U/ y) N7 U( uaround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
9 _' _$ c3 q% S+ J3 bTurbo boost starts at approximately 750 R.P.M. and rises progressively to its5 Z3 u0 J$ H* G% R9 ~+ L9 Q
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
; u: d( o/ y) P7 ~0 Z/ {2 f/ tpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,2 ]1 n; q" ^) J6 L& L
at the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
1 j+ j- i0 C C( Qno point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater/ j0 n+ {4 T5 S$ }
than the standard vehicle at the same R.P.M.
- g" w. D+ }) f! E6 qCan I fit a Dynamic Turbosystem myself and, if not, how long and+ H9 ^# _( | Z$ g
what is the cost of having it fitted for me ?
) a; h. K7 b; {While most competent mechanics could probably fit a Dynamic Turbosystem,' y6 j7 B; R$ D: ?3 K0 L
tuning requires specialised knowledge. The lack of this knowledge could have
6 Z J. b7 g r$ n: x# S( \serious consequences. In addition, warranty can only be provided on Dynamic
2 O# @0 B5 z6 r0 p+ a# u3 \$ xTurbosystems which are installed by authorised facilities.
8 I3 b% f" d2 N' A2 M$ b3 WThe cost of having the installation performed by Andrew at Berrima Diesel is( Q9 G( ~8 r" |' e
only about 10% of the total purchase price. This provides a warranted, correctly
" [3 \% U' u' _tuned, "no hassle" installation for the customer. All diesel vehicle installation can be5 F0 |1 e: y6 Q6 h, N" d- w5 f0 \% |
performed in one day.: Q7 g: X* R2 ?! w$ L; k
What creates the most heat? Fuel or turbo boost?$ L* l' D, b) q) n9 @
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
6 ]4 y2 \. U R$ \requiring a butterfly are vacuum operated governor pumps) to operate. The more air" d& N. S7 o7 O; G
the better. Add too much fuel to the equation and the exhaust gas temperature
+ |8 b0 t) m3 D `8 ^* drises rapidly.# s9 O5 {% I0 _6 c, |
What type of oil and how often should it be changed ?
$ `8 x8 f" \% W! yTurbos must have good quality oil. Use either a mineral, semi or fully-synthetic
1 x9 `; } x8 O ]: hengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .- f. s I. O8 u
Change oil at intervals recommended by the vehicle manufacturer.& `. D2 ?( F7 p, E0 I. a8 r
How long does a turbo last ?
- N3 n s5 K: D# }- I- pOn average, as long as the engine or longer with regular engine servicing and good
4 u7 Q" ^0 [* G- D* Y3 nquality engine oil.
2 b' X& Z3 A# @What is a ‘dump’ valve or ‘blow-off‘ valve ?
) Z3 ]/ {9 t: i2 J3 q, fA valve which relieves boost-pressure between the compressor outlet and engine as
& H) s2 I0 D4 l& Zthe throttle is closed (Only required on throttle valve controlled diesels which are+ e/ Y8 y- P9 b4 V1 R( I3 ]
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
+ a. m q7 D; e0 ~2 Lsounds good changing gears among other reasons!
& ^) G& s' @0 ?Can I fit a turbo from another 4WD ?
2 ^# P' u, Z2 z& VNo, virtually all turbocharger are different inside, even if they appear similar on the
+ z( u+ _. S$ _7 `# d7 a2 Qoutside. The turbo model e.g. Mitsubishi TD04, is only the model, not the/ o8 Y1 b% @: y' |( A3 ^, O$ H
specification.% E; x- G: W! q$ k) A) o6 T
Should I leave my engine ‘ticking over’ before it is turned off ?7 |! G3 b' j, {3 U( D9 e9 ~
Not for normal every day driving, but still worthwhile if the engine has been under
/ k' a8 a8 q) ~; @% J+ Aload or raced before being turned off. e.g. Towing a caravan or after climbing a long
4 G3 P6 X& r. g% i+ i7 Iincline.+ I \8 c5 Q( o% P6 E) S
Why is it important to balance a turbocharger ? U1 Z7 F7 W* K7 I5 D* I
Without highly accurate balancing, vibration will create a whining noise, reduce
2 A0 Y( l0 `4 k, o" J0 H1 Nturbo bearing life and reduce turbo efficiency.
, u1 ^ G5 `2 O4 P+ K! ]4 w' aHow much boost does my turbo produce?" p6 Y6 q5 N9 [$ n
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with# Q$ {3 P. N; ]6 r
Intercooler turbocharged engines running upwards of 13PSI.9 ^. p8 g8 j6 ]8 t" N9 l+ f1 L
How many psi in one bar ?
, o9 C- M$ E: U: q14.7 psi = 1 bar.+ W7 [, B4 p% F" ^% B: H
Are all actuators the same ?
4 t1 y7 L7 }8 \3 LNo, each has a different opening pressure and rate.* y( W) o' g" {, e
Oil in the turbo inlet pipe - Should I be concerned ?
* r1 l v$ c- s4 `) ?A small amount of oil usually exists, drawn in from the engine's crankcase breather
; P1 h6 e2 k5 o2 Jsystem. High engine wear will increase the amount of oil found, and will require
1 E0 `$ F+ e8 Q" l# Ufurther engine tests (not turbo).
6 g7 k8 X5 x0 nShould a turbo be serviced ?& }0 X% N# v: f1 n& }' r
No specific turbo servicing is required, but regular quality engine servicing is needed: B9 o1 C( A% {+ z) O
to reduce the chance of turbocharger problems.9 w' e# X" l9 h: Y5 w9 z: L! s, J
What is a water-cooled turbo ?
8 D" V \6 x# o4 L# T7 M! cThe central part of the turbo, housing the bearings, is surrounded by a water jacket
+ o4 o/ s3 r) b( l e9 j) `through which the engine's water coolant is passed. This water continues to circulate
" l. X6 _0 w4 r' }8 Zafter the engine is turned off, cooling the turbo, and preventing heat soak.1 p5 j( t& g, Y6 d: H/ `; Z" k; T
Do I need to up grade my exhaust ?
( M) A, R8 I/ IGenerally not. Our systems are designed to run utilising as much genuine component
. m+ U# ?! v/ K4 d5 }as possible. Some systems on the market promote exhaust change as it is required by
: G* D* w0 Y* a: H# Z+ Q' nthat particular turbo. Doing so usually picks up more noise than performance.* J$ C* s8 \7 s- _ U4 {
How noisy should a turbo be ?
; A5 b7 @, v) {& EOnly an unbalanced, worn out or damaged turbo will produce any significant turbo4 i$ {% k; w0 g1 ~& a8 _
noise.
* X: n7 Z( G0 k# |5 d' \What is an intercooler ?
* ?; Y. `6 T" tA special type of radiator which cools air before it enters the engine. As a turbo
' z5 l; ^+ D+ {7 Ecompresses air, the air heats up. Power can be increased if the air entering the engine+ Q- G6 f0 \2 P, J1 v; U
is cooler. The cooler air is more dense meaning that more fuel can be injected for+ t. R7 t* U9 `$ e6 E) R- u* V
more power.
9 j: D% s, v" q( D4 I% e HWill my vehicle run ‘cooler’ with an intercooler ?
( k5 D$ o% S5 W$ M$ i# ITheoretically, but not always the case! We commonly find Intercooled 4WD vehicles& \! _0 l3 L. k
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
" S* H5 N+ c# i1 Hair passes out of the Intercooler over the air conditioning condenser and finally the
5 X+ n) X L: Y; r i5 t% ]radiator. The poor old radiator is left with scraps of extremely hot air and then is
5 v& E; h* C6 i+ _expected to cool the engine. We don’t advise fitting them as hot Australian conditions
! [( [) Y2 B* w5 B, O6 Rcan often be the catalyst for engine heat problems.
) s: D, H/ } d/ YWhat will happen to my fuel consumption?" }1 h! b8 W' p$ G
More power generally means more fuel. With a diesel turbo system, fuel consumption' V2 M. N8 l j1 y8 M
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
