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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. % q. i: {& R+ L0 R5 m* j
! L- t! {& f F3 D9 t5 c) c% [
4 {& r& n1 W. O3 A3 ]$ \% ?
Tech Sheet1 L$ E5 I4 V) |8 r) m4 P" |
‘Frequently Asked’8 O1 W. U( r) a
‘Turbo Questions’(In no particular order)
$ B/ f/ s+ W) i2 `& N5 C$ k. zYour turbocharger is engineered to match the specific requirements of the engine it is- l# v L' B. f( A
fitted to. Each is dependent on the other to maintain optimum performance. Don't
8 G# I$ A, l! _8 {! vthink of the turbo as a bolt-on accessory, rather as an integral part of the engine. The
2 s0 @3 G0 h. ?1 [turbo's requirements are similar to the engine’s. It is, therefore, essential that( h+ F- U% @ v$ c4 k6 L5 c1 v
scheduled servicing, using good quality oils and parts, is central to caring for your* [& t, l$ l' ^) w E
turbo.
6 {- }% i" P8 e2 Z- L4 f/ jIn many instances Berrima Diesel receive turbochargers which have been
7 _% i0 }; |8 a" {4 a* p2 jmisdiagnosed as having a turbo problem, when actually the turbo is not at fault.
9 l2 F3 L2 w. iIncorrect fault finding is often caused by a lack of product knowledge. Many
9 K) h% T5 u* r, {/ y+ ]contributory items around the engine bay can trick the unsuspecting into believing the6 M9 f. H/ e/ ?- |: B ?9 q
turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
& q1 }, ?0 q1 N: q; U2 A9 R6 pdiagnosed before a replacement turbocharger is fitted, the problem still exists!
/ `5 x4 ?( ~& g: p. U YWe have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A1 h& G, @! d& P% x4 x5 q! D
turbo can be killed in many ways.
8 Q l" A; a' DForeign object damage results in either the air intake "compressor wheel" or exhaust! ?9 g, ?0 u p( D8 B$ d) D/ Y1 V
"turbine" wheel being damaged. The former is often caused by someone accidentally; v$ q v9 ?! s+ ]/ r& o3 B
leaving a nut or other foreign body in the air induction hoses. Please be extremely6 U1 z2 n: G2 j [$ B' `5 S
careful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,( T0 b- P0 @' I. H3 j
this may be caused by part of an engine component, such as a piece of valve, exiting
. v( `2 V$ z1 t/ Q6 O: `the engine in rather a hurry! In both cases it results in severe turbocharger damage
( S5 F, b, l' D9 Minstantly.
: ]$ f5 A! v, [/ T2 [4 ]6 @Turbochargers are simple in operation, but manufactured to precise tolerances as fine4 ~* |9 L/ O2 y
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
. f) m% P. Q' y; Oturbocharger many times, including final assembly. The balancing methods and
& L# a; I7 n: H8 A, v4 \- _procedures are unique. Without them, no turbocharger can be balanced to the ultrafine2 J3 |6 X3 K+ E
tolerances required for today’s high speed turbos. It is now common for/ [. q4 T" W$ R
turbochargers to spin up to 150,000 rpm +.
! |" ], e3 \* {; K: E8 O: }5 A5 eThat’s approximately 35 times faster than most diesel engines rev at the red line!
d$ q) X$ Z# p6 BSophisticated machinery and highly trained factory staff ensure that the highest( P8 A' X2 _6 t. F
standards are always maintained.0 g: K+ h$ e" I
Useful tips when driving any turbocharged engine, whether it be petrol or diesel, are" c# A! v; M( M6 A' w( Z1 r
to always allow the engine to warm-up fully, until the water temperature gauge1 z8 l# l/ I* Z, L2 c
reaches normal, before full throttle is used. Try to plan the end of your journey1 z" n' \, C' z9 ^% T' f& e- ?
sympathetically. Don’t use full throttle or allow the engine to labour during the last
) T# ~3 W! n- bfew miles. This will prevent excessive heat build-up within the turbo when the engine
, ^/ P* ~* [+ v* ?2 ~is turned off. Also, when coming to a standstill, try to leave the engine idling for a. U; A* K. E' L0 O, v
few extra seconds to allow the heat to decrease. No need for a timer though, just undo# j: q' U, H9 W$ B& l
your seat belt first and then turn off the engine. Never rev the engine just as the
, u3 {! H& \/ j" O. Fignition is turned off. Remember the turbo spins at a far greater speed then the, r, o7 ]: s; r5 z* l
engine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
2 k6 _4 |, @/ Uwithin a few seconds. In reality, none of the above traits will cause a turbocharger to
' m% A; ]& {" @# @5 d' }fail immediately, but repeatedly over a long period, they could reduce the life of your6 }2 L; R4 _; j! M3 Y& m
turbocharger.& [" |* U" V) p* y
If it becomes necessary to seek advice about a turbocharger or a turbo related- v- _7 h$ S, V1 K4 b
problem, always rely on a professional. Berrima Diesel, together with DTS
) y+ t4 S m/ {: Tturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one
& h6 d* _# c; Q/ K4 V, E. Z: G' bof the most experienced turbo installation companies in the world. We can advise
* x, v4 P3 W3 G5 Zcustomers with turbocharged 4WD’s on a wide variety of questions and issues
1 U8 \8 Y8 B$ Hrelating to owning and running a turbo car.: ^# ~7 z* G2 F/ ?5 ]
It cannot be stressed too much how important it is, when purchasing turbocharger# [6 }5 F# [7 U0 M, X' g6 I/ ^3 \
system, always to choose the top brand name -Berrima Diesel. Consider this. As with
- N* e& T7 j( oso many things in life, quality costs, and there are sometimes cheaper turbos for sale.
3 `2 x+ P: Q/ \: m* GWithout the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
$ j! o) Y) v. [0 wthat your short-term saving may turn out to be a long-term nightmare.; H$ l* H3 c' S% ?, ]% Y
What is 'Boost'?
0 v3 N- C6 {/ m9 y% hBoost is a term used to describe the increase in pressure, provided by the
4 n7 U" z2 W5 U. Kturbocharger, to the volume of air, entering the engine. This pressure is expressed in2 v, X) T1 ?5 E R, l' S9 {* y( k4 G
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same5 {' c* Z5 \/ q$ D" x
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa
( E2 t$ O/ x2 E8 x1 U14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power6 }( w: p. l- P2 u- W
output is increased. This pressure increase is called 'boost'.
: _# `7 c: c% Z: o" `0 g. UHow does fitting a Dynamic Turbosystem effect the power of my
9 _% U9 [! V9 cvehicle?( u4 x) g( Q! N- l2 ~7 b, d
Modern 4WD diesel engines, typically produce peak torque (pulling power), at% q$ M1 N% U/ }/ ?& ]; `* _
around 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.
) W3 S) U1 v' o& ATurbo boost starts at approximately 750 R.P.M. and rises progressively to its1 d/ P0 R% U- T+ v* v
maximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this
- |: T0 @9 ^! Wpoint, the percentage torque increase of a correctly tuned installation is approx. 40%,
8 D" t3 a# B; N5 g; Wat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At3 q" s3 x4 \' D$ S
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater# d1 t* p) Z9 @
than the standard vehicle at the same R.P.M.! f, U' x( L4 U K8 @1 o2 \
Can I fit a Dynamic Turbosystem myself and, if not, how long and
& E1 e2 ^. l! |( Z: ?- k. [& Mwhat is the cost of having it fitted for me ?
' @6 n# a4 M) r: Q: R# dWhile most competent mechanics could probably fit a Dynamic Turbosystem,) A; }4 c) l& j \! n
tuning requires specialised knowledge. The lack of this knowledge could have( P( `/ S8 B; h) m" S% K8 h
serious consequences. In addition, warranty can only be provided on Dynamic i% J( r4 @4 O# K1 r) K7 H
Turbosystems which are installed by authorised facilities.
2 _, L% N+ P. l3 @! X' h5 m# s: R9 LThe cost of having the installation performed by Andrew at Berrima Diesel is# U- ?7 E7 Y) d! }$ z6 A
only about 10% of the total purchase price. This provides a warranted, correctly. T' t! U! x; u# c6 ?: W
tuned, "no hassle" installation for the customer. All diesel vehicle installation can be
; ^: x6 w9 f* ?* w' n0 `9 P4 f# @; K% Rperformed in one day.( M: q* ~( P! G$ H, I
What creates the most heat? Fuel or turbo boost?
$ F' U# J: i* vDiesels do not need an air control (eg. manifold butterfly valve. The only ones, t1 ~* o! z0 a" S
requiring a butterfly are vacuum operated governor pumps) to operate. The more air
+ _1 `/ R& j, T4 e+ R/ dthe better. Add too much fuel to the equation and the exhaust gas temperature" V" c% ]+ b3 F. G; L
rises rapidly.
( U4 b; @; v# OWhat type of oil and how often should it be changed ?
{7 t! [% M: R& [7 \- U, STurbos must have good quality oil. Use either a mineral, semi or fully-synthetic' ^' W1 r" X& s8 V) ~7 N. d: Q
engine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .
' \$ d! b5 ~5 V6 x9 J# QChange oil at intervals recommended by the vehicle manufacturer." g* Z3 g- K. d0 B! c+ Z1 G( S
How long does a turbo last ?3 s! S/ y Q* M6 Y
On average, as long as the engine or longer with regular engine servicing and good
6 c6 N) s5 ^! s8 y4 qquality engine oil.
v& M5 X7 `" t; c+ u+ ]# rWhat is a ‘dump’ valve or ‘blow-off‘ valve ?" ~, \ d! l: O$ h* u' z
A valve which relieves boost-pressure between the compressor outlet and engine as H' S7 i. I. x( j; Q! I3 D9 z. X
the throttle is closed (Only required on throttle valve controlled diesels which are
9 ?; u% n4 N; e6 w+ d* F! F2 yrarely seen these days). These are commonly fitted to hotted up petrol cars so it
4 N% D$ \, B$ Esounds good changing gears among other reasons!
9 j7 w; S: L0 i. y1 G! ?Can I fit a turbo from another 4WD ?- W* A; e# t7 c; a& k
No, virtually all turbocharger are different inside, even if they appear similar on the% U8 O" A* S2 O) h J6 ?
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
9 ^6 |+ F, y0 r: kspecification.3 f, Y3 r$ A" |4 S
Should I leave my engine ‘ticking over’ before it is turned off ?$ g1 ?' v& ]7 _$ A+ {7 f) e
Not for normal every day driving, but still worthwhile if the engine has been under
7 u- m x p4 Z6 N) B; fload or raced before being turned off. e.g. Towing a caravan or after climbing a long8 z" c% m" }$ ~* n) M( m
incline. T5 j- D" Q! C
Why is it important to balance a turbocharger ?$ j* q5 C! w) h; C# ^
Without highly accurate balancing, vibration will create a whining noise, reduce4 C( z1 Y; e+ P$ E+ U
turbo bearing life and reduce turbo efficiency.
5 ?# E9 x- V8 PHow much boost does my turbo produce?$ w$ t! Z7 S* E: }+ q
Correctly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with% O% C5 {: y/ j) _3 Q! f# ]6 s
Intercooler turbocharged engines running upwards of 13PSI.
$ ]* h) z! [2 T1 Z/ DHow many psi in one bar ?
! `* D$ o' s& t. a/ c7 L6 p14.7 psi = 1 bar.
8 a; K( T7 i/ l$ p2 ]Are all actuators the same ?7 U$ H7 ~. a4 ~, S N1 \2 ?7 X
No, each has a different opening pressure and rate.) Y( H# g1 @8 j& _2 x J
Oil in the turbo inlet pipe - Should I be concerned ?4 X3 ~: {8 P8 l7 N1 s
A small amount of oil usually exists, drawn in from the engine's crankcase breather
* M+ g# c: m- usystem. High engine wear will increase the amount of oil found, and will require; F4 a- ^: _' v% F- `0 d: z
further engine tests (not turbo).
, p! U1 p. ^( ]& p. c/ ]: z; mShould a turbo be serviced ?/ ]4 H$ X& b J- X7 j
No specific turbo servicing is required, but regular quality engine servicing is needed
+ P. D3 `& k8 a# a% Gto reduce the chance of turbocharger problems.$ }! A; C ^# Y
What is a water-cooled turbo ?- m, ?7 d' @9 X+ L" Z1 p
The central part of the turbo, housing the bearings, is surrounded by a water jacket
# b! j5 ?/ X& X& u. x) ^+ C1 Mthrough which the engine's water coolant is passed. This water continues to circulate, G2 p4 L% Q4 R' ]1 W" L6 N+ R6 b
after the engine is turned off, cooling the turbo, and preventing heat soak.' W, S. v5 @" @1 t. U
Do I need to up grade my exhaust ?/ K2 i! M2 B2 M, c4 C6 V' F
Generally not. Our systems are designed to run utilising as much genuine component
' i( Q9 d3 j: r5 {$ Tas possible. Some systems on the market promote exhaust change as it is required by' y9 z9 J- x6 t
that particular turbo. Doing so usually picks up more noise than performance.
$ s/ E* o7 |6 `How noisy should a turbo be ?
! c3 b. S" A1 m* T. @; K* a. {Only an unbalanced, worn out or damaged turbo will produce any significant turbo; T5 p; m1 C7 h) q( Z6 p2 V3 h
noise.& ?# p0 {' T7 d6 h8 [
What is an intercooler ?
, D2 i, ?% A) D% N- n) l0 @- u: OA special type of radiator which cools air before it enters the engine. As a turbo
% [. ~3 Y! P2 [& l$ X7 Kcompresses air, the air heats up. Power can be increased if the air entering the engine
0 q* L0 \9 }6 t$ C- N1 dis cooler. The cooler air is more dense meaning that more fuel can be injected for
% `$ R1 e; W! `: Dmore power.- ]3 N( I1 }- m% B h: H# ~* m6 Z
Will my vehicle run ‘cooler’ with an intercooler ?2 G" v; w/ x( q2 M8 @' g4 S
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles. k# D: X. Z+ o! R7 Q2 x# G9 ~; Y; c
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot
0 N1 n) O/ A# _0 G" l. D2 Cair passes out of the Intercooler over the air conditioning condenser and finally the
6 T: T1 c1 N+ M0 h0 Lradiator. The poor old radiator is left with scraps of extremely hot air and then is
0 \. U6 W1 R3 ^4 L% Fexpected to cool the engine. We don’t advise fitting them as hot Australian conditions
/ |6 i2 f; v, jcan often be the catalyst for engine heat problems.
" J4 x/ {- t F; y. Q2 P! _; xWhat will happen to my fuel consumption?
. w& x4 { Q% m6 E! ZMore power generally means more fuel. With a diesel turbo system, fuel consumption, A& M2 l( T( g) Q 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
