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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. ' @- o1 Z5 \6 `8 t3 y& W
, H) @5 a( C* q
) e- R2 x# t+ j# }- _- E! h' L0 Y4 L fTech Sheet4 h, k7 Z: s/ D5 p( @, ?
‘Frequently Asked’
: p! K2 e: G# ~; c3 j‘Turbo Questions’(In no particular order)& ^$ l) w( z9 T6 T, Z! o
Your turbocharger is engineered to match the specific requirements of the engine it is
+ {3 F! L) s! l" q* sfitted to. Each is dependent on the other to maintain optimum performance. Don't* {) z4 d2 ?7 w- p4 Q" ]4 D; I
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
& X0 g6 W+ e- l) N# p% I- lturbo's requirements are similar to the engine’s. It is, therefore, essential that
8 k7 w) E% ?/ o* |scheduled servicing, using good quality oils and parts, is central to caring for your
7 f4 R' q1 k' }6 Yturbo.3 f" {6 O* I) ?; N# G% S
In many instances Berrima Diesel receive turbochargers which have been, ~. ?' b% Z6 Q0 F5 j
misdiagnosed as having a turbo problem, when actually the turbo is not at fault./ M7 O4 ]8 Z: e7 R# c
Incorrect fault finding is often caused by a lack of product knowledge. Many
2 Y) k7 T' \ g" vcontributory items around the engine bay can trick the unsuspecting into believing the
( o: S& t; b' D& ^" ?turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
6 V+ j) o8 c, B0 P- Udiagnosed before a replacement turbocharger is fitted, the problem still exists!
! C/ C( ]: w. K/ tWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A( e1 w- J' _3 `. ?. j, y
turbo can be killed in many ways.
' h5 y, v5 K& j" a4 s/ w7 rForeign object damage results in either the air intake "compressor wheel" or exhaust
% d9 o4 I4 q2 D0 L9 L"turbine" wheel being damaged. The former is often caused by someone accidentally
; [3 a% j4 L4 T& b, w$ Rleaving a nut or other foreign body in the air induction hoses. Please be extremely0 u( h5 _- h* B6 R
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,7 o; y( k9 k6 p5 l
this may be caused by part of an engine component, such as a piece of valve, exiting' `1 k+ T* M) k: t9 _
the engine in rather a hurry! In both cases it results in severe turbocharger damage
8 f+ f% F5 c% i0 U# ?( v4 P* ninstantly.- ]2 z, B: l: D+ V
Turbochargers are simple in operation, but manufactured to precise tolerances as fine! ]' }- f- b9 x
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
* |: i7 t7 e. m8 aturbocharger many times, including final assembly. The balancing methods and
. z0 ~/ P f8 k5 e. |1 v6 Kprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine$ s' N8 Q' \6 o& C. h# k, L+ }8 Z2 r
tolerances required for today’s high speed turbos. It is now common for
$ [. D% Y0 a5 a, w& t7 ?turbochargers to spin up to 150,000 rpm +.
' N; g s! X& ^7 V2 {& p, hThat’s approximately 35 times faster than most diesel engines rev at the red line!8 W2 g* N" S0 s- H5 p2 c; p7 N
Sophisticated machinery and highly trained factory staff ensure that the highest
; M' R% O5 ?! b9 z: N0 estandards are always maintained.( w& x9 f8 k; K. @6 y
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are
- w7 N5 i( Z, A6 h% q7 I+ Wto always allow the engine to warm-up fully, until the water temperature gauge
% o" u2 ^2 M" S `1 q3 S7 m. B' Hreaches normal, before full throttle is used. Try to plan the end of your journey* Y# c, o& D) _3 A( E( {% `
sympathetically. Don’t use full throttle or allow the engine to labour during the last2 q4 e# t$ I7 W2 W! w
few miles. This will prevent excessive heat build-up within the turbo when the engine
+ e" Q D; M3 o v0 L, i3 xis turned off. Also, when coming to a standstill, try to leave the engine idling for a! i7 P' e9 V3 R$ D' a+ n. A* \
few extra seconds to allow the heat to decrease. No need for a timer though, just undo
' q/ O' n% `) z0 u v& e! Q. ?- Fyour seat belt first and then turn off the engine. Never rev the engine just as the
; V; r; {: ~, y, \' z- S6 Pignition is turned off. Remember the turbo spins at a far greater speed then the2 z6 o" b. g r
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
5 n- S3 { h% h2 J% X3 }! gwithin a few seconds. In reality, none of the above traits will cause a turbocharger to5 j9 ]1 q; R8 e- ~
fail immediately, but repeatedly over a long period, they could reduce the life of your
4 L+ S3 m! L j( g; y7 Xturbocharger.8 O" u) Z, C8 @: m) K1 V! p* H, [
If it becomes necessary to seek advice about a turbocharger or a turbo related
' r5 I6 ?- ?1 wproblem, always rely on a professional. Berrima Diesel, together with DTS2 q% p/ B* M. d$ O5 z7 ?: H# f5 ~
turbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
& I+ _8 q6 b0 ]- J- t, Jof the most experienced turbo installation companies in the world. We can advise; {. A. P3 s& e
customers with turbocharged 4WD’s on a wide variety of questions and issues, `& j [' o3 ~! ~8 r& r
relating to owning and running a turbo car.' D' p# {7 r5 X: b4 \0 T6 S; f
It cannot be stressed too much how important it is, when purchasing turbocharger; w. R1 w, M( s7 g9 \% k3 l
system, always to choose the top brand name -Berrima Diesel. Consider this. As with. h, D0 Q, N4 _9 C2 N: D0 F
so many things in life, quality costs, and there are sometimes cheaper turbos for sale.
0 Z/ j; P& j7 ?, [+ |- @Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk4 o1 O8 r' H/ l2 F8 i4 P
that your short-term saving may turn out to be a long-term nightmare.* h1 S% Q. X Y, x z2 l
What is 'Boost'?
* u% O9 y7 r+ j3 D* s+ {* bBoost is a term used to describe the increase in pressure, provided by the
5 R# @ |6 X6 Uturbocharger, to the volume of air, entering the engine. This pressure is expressed in
; l/ F5 w: O$ M; H/ n0 @% Ca number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same
! w* }7 }$ {% P, L$ d. Gthing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa" j% O, Q$ A' j w. n; I' z
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power* j* ^: n1 H0 [4 e7 C
output is increased. This pressure increase is called 'boost'.5 o+ A9 ~, ~1 n5 b6 {
How does fitting a Dynamic Turbosystem effect the power of my) l x w/ c! P
vehicle?, D% S* P( B. X
Modern 4WD diesel engines, typically produce peak torque (pulling power), at( r: b- M! d3 V: o$ @# g1 v+ @$ K
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.5 x) w) [( I( c
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its' X# }" R0 {+ A" O7 T' Q4 {
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this! `4 J8 Q5 r3 p: `' S% Q! g
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
! c; M9 F5 E6 iat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At
; s% X" s4 S1 _no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater
1 Z* h5 c0 e5 P Jthan the standard vehicle at the same R.P.M." i* }8 j$ Z/ X9 T3 }
Can I fit a Dynamic Turbosystem myself and, if not, how long and
& X b0 y! u# D0 f5 @# b3 [what is the cost of having it fitted for me ?; c5 L* T5 Q; J4 u/ ^. [
While most competent mechanics could probably fit a Dynamic Turbosystem,
9 e/ ?. O! Z4 L/ D. |3 vtuning requires specialised knowledge. The lack of this knowledge could have
' ]8 g! w4 d- m, m$ \7 U" h6 @serious consequences. In addition, warranty can only be provided on Dynamic$ K1 X% I6 R! B( v& L% h- }
Turbosystems which are installed by authorised facilities." ^0 S: G- X) R+ [( a0 U; g9 A$ p! I
The cost of having the installation performed by Andrew at Berrima Diesel is1 e6 Q7 x. o* S% [
only about 10% of the total purchase price. This provides a warranted, correctly' a) i* ]$ _: ^$ j v8 v
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
$ x6 h+ L* t9 Qperformed in one day.
: s$ {/ p, l: Q8 Y8 y. n0 y: PWhat creates the most heat? Fuel or turbo boost?" q& E2 i6 ~: U
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
3 R( \0 H( o) J n* \requiring a butterfly are vacuum operated governor pumps) to operate. The more air
0 I7 w0 i; ?& v/ Othe better. Add too much fuel to the equation and the exhaust gas temperature: Y- m6 |4 o% s# x. A) v
rises rapidly.
# p }# Z7 w$ O! l, `! I2 VWhat type of oil and how often should it be changed ?; \6 `, h/ {1 w( w7 g
Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
4 F: c# D, R% x, zengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .$ P& q: I- l/ ^; X# \% M
Change oil at intervals recommended by the vehicle manufacturer.. U# Y5 E, S. H0 v- [
How long does a turbo last ?
% O( W" Y) a! w; C2 NOn average, as long as the engine or longer with regular engine servicing and good" y7 r: p, {+ x* B; \; \+ H5 t0 m
quality engine oil.% P3 F7 s, ?, \9 P2 l( T' g8 v
What is a ‘dump’ valve or ‘blow-off‘ valve ?8 v! {1 ^- H: Z
A valve which relieves boost-pressure between the compressor outlet and engine as( [5 ?4 s! }; F6 V, f( ^4 O$ J
the throttle is closed (Only required on throttle valve controlled diesels which are: v; r b2 u/ R9 _
rarely seen these days). These are commonly fitted to hotted up petrol cars so it
8 D- X6 w1 b# Q) e& ~ lsounds good changing gears among other reasons!5 k, p* l9 ?6 T H$ l4 o6 H
Can I fit a turbo from another 4WD ?; J# a6 E0 Y& C3 N/ \" \; G
No, virtually all turbocharger are different inside, even if they appear similar on the! g( [% c; @0 O0 U' P/ N
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the9 H1 k& d5 }: R* r
specification.8 m }' j: a7 ~- z5 n; o8 e
Should I leave my engine ‘ticking over’ before it is turned off ?2 Q8 Y& }$ k, G/ |
Not for normal every day driving, but still worthwhile if the engine has been under
' ?# O# ~5 v( qload or raced before being turned off. e.g. Towing a caravan or after climbing a long* M1 x+ G* p3 j
incline.
+ i; w1 D2 C" q6 \ S! YWhy is it important to balance a turbocharger ?
% K1 I/ W7 @- nWithout highly accurate balancing, vibration will create a whining noise, reduce+ w0 s: b! b) M$ h, x6 o; j
turbo bearing life and reduce turbo efficiency.4 H8 v! i3 V) V9 k7 D
How much boost does my turbo produce?
8 T+ Y& X5 W" n2 Y. n G% WCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with* G4 L# N2 u7 n5 `4 U
Intercooler turbocharged engines running upwards of 13PSI." w- {. R- j: i9 T/ ]
How many psi in one bar ?
" \2 y6 k/ _5 ]0 O0 p s4 m4 }$ R14.7 psi = 1 bar.
% |: H) i- h7 G0 ?4 Y* LAre all actuators the same ?
' A' @: L" _/ a+ BNo, each has a different opening pressure and rate.+ z: }9 J3 Q) H* p0 H, k. {
Oil in the turbo inlet pipe - Should I be concerned ?
- b, \/ Q& p% V0 {2 L& {0 sA small amount of oil usually exists, drawn in from the engine's crankcase breather: Q( a: B, s7 K5 E- g
system. High engine wear will increase the amount of oil found, and will require
0 G1 ~4 T4 w$ o# a8 F3 V( _further engine tests (not turbo).' S) N' n; ?: Y1 F" u8 I4 k
Should a turbo be serviced ?- C/ q8 y( g3 s- ?! d5 {3 R
No specific turbo servicing is required, but regular quality engine servicing is needed! S; _5 w" V) v5 |+ O C8 m
to reduce the chance of turbocharger problems.
) O1 m$ }' s, C% CWhat is a water-cooled turbo ?3 G9 Z6 d# l+ u
The central part of the turbo, housing the bearings, is surrounded by a water jacket) p! z# E8 W" k' C
through which the engine's water coolant is passed. This water continues to circulate2 A h( W* X( _+ V
after the engine is turned off, cooling the turbo, and preventing heat soak.
- \. ~# b& Y- c9 |$ I B3 d8 TDo I need to up grade my exhaust ?2 \) B7 K) @- E$ Z, o& v3 {
Generally not. Our systems are designed to run utilising as much genuine component* T; F4 r8 w# m1 X3 v& \) M
as possible. Some systems on the market promote exhaust change as it is required by# c* Q" [ k& X
that particular turbo. Doing so usually picks up more noise than performance.
7 z8 P" ]& L( L8 MHow noisy should a turbo be ?
. R8 }% `2 G& H9 g0 \4 X" l' GOnly an unbalanced, worn out or damaged turbo will produce any significant turbo
. U( E _; q$ s* u9 {noise.
* I3 d" ~, z8 g3 J4 Q6 jWhat is an intercooler ?
' V' k* l/ }" A6 o8 h( q) HA special type of radiator which cools air before it enters the engine. As a turbo
& m% z- }; u) s% [9 ncompresses air, the air heats up. Power can be increased if the air entering the engine
; g0 t* s4 u- U/ ]# Y6 sis cooler. The cooler air is more dense meaning that more fuel can be injected for
; H) g- r* h4 X+ B. |more power.
# K2 Y5 {1 U! i) Y" SWill my vehicle run ‘cooler’ with an intercooler ?
. r7 I! ?" s/ B" C5 P* J* ^4 ?Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles" R8 @% {% a7 F* ]' \- c! T+ _
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot( q R7 ~; J% X6 ?6 q5 Y n
air passes out of the Intercooler over the air conditioning condenser and finally the- X7 G9 s4 T9 D s0 M6 F& O
radiator. The poor old radiator is left with scraps of extremely hot air and then is( m6 @1 b* P" |; P
expected to cool the engine. We don’t advise fitting them as hot Australian conditions" V) N8 z4 g: o4 Q
can often be the catalyst for engine heat problems. a) H7 J% Q& [6 l+ ?+ \7 V* s; d
What will happen to my fuel consumption?
& M: h0 @* m2 ?7 |0 JMore power generally means more fuel. With a diesel turbo system, fuel consumption2 D# f6 `: W0 E* w- c- ?
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
