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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.
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+ O" n0 S$ @& L4 Y' Q3 W# O; @( l y- C, i" O3 `, T
Tech Sheet" ]' F0 ?& P5 `% a- l3 z8 d' m* l
‘Frequently Asked’$ q$ |7 o1 _3 C/ {; |
‘Turbo Questions’(In no particular order)! i8 F6 }# w, v6 w* E
Your turbocharger is engineered to match the specific requirements of the engine it is, M5 C: K( a+ m- f
fitted to. Each is dependent on the other to maintain optimum performance. Don't! C9 a* P/ f. ^7 c9 L9 F% a
think of the turbo as a bolt-on accessory, rather as an integral part of the engine. The: E3 Q$ M: I- e- d/ {
turbo's requirements are similar to the engine’s. It is, therefore, essential that
- {( B, c" b" s4 Wscheduled servicing, using good quality oils and parts, is central to caring for your; x1 Q# C/ M2 z! _2 ?% A5 @8 s; P
turbo.% ~* ~% [ }0 h. ~7 Z! p9 Q
In many instances Berrima Diesel receive turbochargers which have been! k! v5 m5 A2 L: w2 t" [- m6 q
misdiagnosed as having a turbo problem, when actually the turbo is not at fault.
# [9 \ A$ p4 g- E) i& F" X" [Incorrect fault finding is often caused by a lack of product knowledge. Many
$ H6 Y7 U$ s7 ?/ c) ~( zcontributory items around the engine bay can trick the unsuspecting into believing the
/ [6 j$ _: F; D- N, ~: |turbo is the culprit, when in fact it is not. Unfortunately, if the real problem is not
Z S5 y% ~# @7 X: w I3 ?diagnosed before a replacement turbocharger is fitted, the problem still exists!7 t9 c6 U# o7 [, O0 S% y2 \8 Q3 @
We have a saying at Berrima Diesel which goes, "Turbos don't die. They’re killed". A' l1 ], A- n( @, }! }
turbo can be killed in many ways.
* s' O7 j# I- t6 a1 M5 i9 uForeign object damage results in either the air intake "compressor wheel" or exhaust- H" \. |1 M# }0 g# d
"turbine" wheel being damaged. The former is often caused by someone accidentally
' x1 I$ f: x& x2 w4 ?' @; n3 E1 R Rleaving a nut or other foreign body in the air induction hoses. Please be extremely
2 j) i' @& f: X* ^9 Tcareful if going to an aftermarket air-filter. Genuine is bests there! In the latter case,6 \; ~4 E! B9 [7 @/ F
this may be caused by part of an engine component, such as a piece of valve, exiting
+ ]# X$ g C1 k2 H T# ^the engine in rather a hurry! In both cases it results in severe turbocharger damage5 s. w1 {2 W* V8 u; u4 N4 f* T
instantly.( G7 ]; a) {2 }. n: y& _
Turbochargers are simple in operation, but manufactured to precise tolerances as fine1 E- N& ^5 S# V: C/ i
as 1/ 1,000,000 of an inch. The turbo unit manufacturers balance and test every single
2 q" u1 d3 _2 g$ z6 `! e5 Vturbocharger many times, including final assembly. The balancing methods and
a; M$ a/ m8 r* i) aprocedures are unique. Without them, no turbocharger can be balanced to the ultrafine
/ K$ D, r" f6 Q% vtolerances required for today’s high speed turbos. It is now common for' R0 \ ]' U6 l6 @6 N# G8 w; r* E. A
turbochargers to spin up to 150,000 rpm +.
# f9 H/ p2 h- t+ ^! r9 m; cThat’s approximately 35 times faster than most diesel engines rev at the red line!
1 `/ O4 R& I7 N5 b- ?! H9 [, J0 mSophisticated machinery and highly trained factory staff ensure that the highest
6 c7 }! x( F2 p2 ~standards are always maintained.
, e$ ~9 t6 X& eUseful tips when driving any turbocharged engine, whether it be petrol or diesel, are- U2 o3 g v$ N3 {# O* \
to always allow the engine to warm-up fully, until the water temperature gauge2 j! p4 a/ ^% E6 w. G5 e
reaches normal, before full throttle is used. Try to plan the end of your journey
: i4 N) ~# k' Q( Psympathetically. Don’t use full throttle or allow the engine to labour during the last
- b% h( z ]4 q, `few miles. This will prevent excessive heat build-up within the turbo when the engine7 @7 Q7 m- c ?
is turned off. Also, when coming to a standstill, try to leave the engine idling for a
8 b, Y% _ m4 ~few extra seconds to allow the heat to decrease. No need for a timer though, just undo
$ `2 U" O: q4 W3 a' Byour seat belt first and then turn off the engine. Never rev the engine just as the3 A! Y j4 H0 b2 _1 Z2 h
ignition is turned off. Remember the turbo spins at a far greater speed then the
3 l- ^$ [1 F$ S; H& _$ f2 v, Oengine, but is lubricated with engine oil. Once the engine stops the oil supply ceases
0 N0 |6 {$ ]6 D% f [5 i) twithin a few seconds. In reality, none of the above traits will cause a turbocharger to) T4 s4 r4 ~: ?5 H. r$ C, V* u
fail immediately, but repeatedly over a long period, they could reduce the life of your
- x/ y, |, R5 K% i) C* |$ Hturbocharger.
4 I4 t+ o3 ]: R. }: m4 w. ]If it becomes necessary to seek advice about a turbocharger or a turbo related
# {7 Q7 Q: B8 \; Cproblem, always rely on a professional. Berrima Diesel, together with DTS
% f6 y1 v9 |. ~; L% Hturbochargers, are Australia’s leading turbo specialist, and are acknowledged as one9 R# M C0 D' q7 f3 d; l; y4 n3 U
of the most experienced turbo installation companies in the world. We can advise; J( j$ e. |9 A, a8 D3 k( G
customers with turbocharged 4WD’s on a wide variety of questions and issues+ t$ t* J% K% ^( |" i% r. Q, f
relating to owning and running a turbo car.
& \' D6 x, P8 _, J/ mIt cannot be stressed too much how important it is, when purchasing turbocharger
5 M" n2 A2 a4 {5 @7 Y- Zsystem, always to choose the top brand name -Berrima Diesel. Consider this. As with
7 b+ g# T9 P0 v' k5 m! C+ c* Vso many things in life, quality costs, and there are sometimes cheaper turbos for sale.2 }9 z+ P" K2 z: ?1 d/ U
Without the safeguard of using a Berrima Diesel turbocharger, you run a serious risk
8 _% f+ T/ X, q) a5 o1 @; ]! dthat your short-term saving may turn out to be a long-term nightmare.
& F6 {: G$ j: z! j: CWhat is 'Boost'?( Z- o0 e6 ?& Z
Boost is a term used to describe the increase in pressure, provided by the4 j- i; ~" j) r* v
turbocharger, to the volume of air, entering the engine. This pressure is expressed in8 T- U6 B, i2 Z$ E/ n& i
a number of different units, (BAR, ATM, Kpa, P.S.I.), but they all mean the same+ ]% x2 B) q+ E, L
thing. For purposes of approximate comparison; 1 BAR = 1 ATM = 100 Kpa* x% e& Y; j/ `. j& G0 Q, [
14.7P.S.1. When the pressure of the engine's inlet air is increased, the engine's power/ q8 {, M7 t! W/ s
output is increased. This pressure increase is called 'boost'.9 l1 R' B( N7 r C2 h
How does fitting a Dynamic Turbosystem effect the power of my
) i( T7 D$ M' r& Vvehicle?: ]* C$ Y. n2 ^" l* ~; ?
Modern 4WD diesel engines, typically produce peak torque (pulling power), at
# q; G# h) G+ C2 J0 F. i! Saround 2,000-2,500 R.P.M. and peak horsepower at around 3,500-4,000 R.P.M.2 y3 f4 \4 O* y; m. V5 F0 H
Turbo boost starts at approximately 750 R.P.M. and rises progressively to its
' X3 f" w3 `9 C/ L( v1 Y+ c0 smaximum pressure of approx. 70 Kpa (10 P.S.I.) by approx. 2,000 R.P.M. At this) \3 |! L) K3 D+ V8 d2 U
point, the percentage torque increase of a correctly tuned installation is approx. 40%,
. L& A2 ~8 T# q/ O" _0 lat the wheels. This continues to the peak horsepower point of 3,500-4,000 R.P.M. At, N' l S# e( ~) Z5 T# ?3 z; N
no point is it ever any less than standard. e.g. at 1500 R.P.M. it is at least 25% greater% H h$ l' }- T) X, ]- H
than the standard vehicle at the same R.P.M.4 o/ J3 _, t; [' T7 U* ~/ e
Can I fit a Dynamic Turbosystem myself and, if not, how long and
" {+ [( Z6 t' pwhat is the cost of having it fitted for me ?/ E6 d E- g R" ~3 V# H/ T0 q
While most competent mechanics could probably fit a Dynamic Turbosystem,
0 F: A4 p, s6 p! ttuning requires specialised knowledge. The lack of this knowledge could have
7 R% O- Q, `8 O: t$ [& f. I, Nserious consequences. In addition, warranty can only be provided on Dynamic
* X% ?. t4 B9 o" p8 q5 z. KTurbosystems which are installed by authorised facilities.* p" u' `4 o8 U5 W* X; q
The cost of having the installation performed by Andrew at Berrima Diesel is3 Q( L2 } D+ M# W
only about 10% of the total purchase price. This provides a warranted, correctly
) b6 `# ^. s9 H0 ftuned, "no hassle" installation for the customer. All diesel vehicle installation can be
. l O/ m2 e4 x5 K8 d/ P! q- wperformed in one day.
- U8 s. E1 B$ S) w; iWhat creates the most heat? Fuel or turbo boost?6 @1 ~, D7 k( A B) d
Diesels do not need an air control (eg. manifold butterfly valve. The only ones
. a e$ e8 R; R6 K$ _: {requiring a butterfly are vacuum operated governor pumps) to operate. The more air
: |& S2 @$ F' m' _/ w/ |3 J" D, sthe better. Add too much fuel to the equation and the exhaust gas temperature) s m0 y& F) c% C* B8 n
rises rapidly.
4 ]/ U7 Y& f6 |6 i" ~2 ~; ?What type of oil and how often should it be changed ?
+ {0 w' v7 c/ h% ?Turbos must have good quality oil. Use either a mineral, semi or fully-synthetic
' q4 |- P# O+ l# U) K" r7 t Lengine oil. Berrima Diesel recommends Shell Rimula range or Shell Helix Ultra .' W1 Q* ? }9 }( @: F* x7 X( T5 A
Change oil at intervals recommended by the vehicle manufacturer.6 i% O/ Q$ N1 ]: _5 `* h7 o, k
How long does a turbo last ?
* S) u/ T( k: QOn average, as long as the engine or longer with regular engine servicing and good
; q1 j+ K8 I6 |7 \! M- Yquality engine oil.
' ]5 a) Z/ w: o5 Z3 uWhat is a ‘dump’ valve or ‘blow-off‘ valve ?
- ~1 Z" m. X8 S' i% R5 [A valve which relieves boost-pressure between the compressor outlet and engine as
, T/ s# C! m8 m0 [the throttle is closed (Only required on throttle valve controlled diesels which are
^! c9 I, C3 Q. o+ V) {- W8 Urarely seen these days). These are commonly fitted to hotted up petrol cars so it
D! u6 Q4 a$ Z) p! C" V1 }, {sounds good changing gears among other reasons!
( _& Y7 E/ x. J2 I2 B2 \7 g/ K1 nCan I fit a turbo from another 4WD ?' _& _+ ?# z5 ] ~' J
No, virtually all turbocharger are different inside, even if they appear similar on the6 T3 a! T/ o8 T& [ L1 Q" b t2 D0 P' c
outside. The turbo model e.g. Mitsubishi TD04, is only the model, not the
3 N% m8 s+ }$ u; L4 qspecification.
" ?% x5 Z* i- n; f% C. n- iShould I leave my engine ‘ticking over’ before it is turned off ?& T* L0 d3 k' s3 M
Not for normal every day driving, but still worthwhile if the engine has been under
! g2 h' q4 S" |load or raced before being turned off. e.g. Towing a caravan or after climbing a long
5 A/ [+ e! v6 [/ J3 pincline.
" ]. G$ N1 c! S2 h% ~. s" UWhy is it important to balance a turbocharger ?9 D; E' M3 s2 u3 _$ K4 L' U
Without highly accurate balancing, vibration will create a whining noise, reduce
& ]0 P) e T+ L+ L( xturbo bearing life and reduce turbo efficiency.
) N; V1 s) r+ p" ]# U4 p# q6 `* VHow much boost does my turbo produce?
. d% W6 d" L/ wCorrectly set up diesel 4WD turbochargers run up to between 10 PSI to12 PSI with
4 K$ K* E4 ~) h8 kIntercooler turbocharged engines running upwards of 13PSI.* s& Y, Q; V0 J# s: Q+ k
How many psi in one bar ?
N/ J4 _0 E2 W1 [0 I: Y2 |3 Z7 Z14.7 psi = 1 bar.
5 t. K* Z$ i* A9 kAre all actuators the same ?, a7 M r, l7 k; ]5 g9 P f2 o. D
No, each has a different opening pressure and rate.
: e/ H6 y# g$ E3 JOil in the turbo inlet pipe - Should I be concerned ?
) ]& u' z$ C* Q3 L5 ^1 l, H2 fA small amount of oil usually exists, drawn in from the engine's crankcase breather
3 d1 g% i3 U; bsystem. High engine wear will increase the amount of oil found, and will require: o$ T. u9 ~5 A. J, S9 I( P' [4 N7 w! R
further engine tests (not turbo).- m/ P5 Z) ~- A
Should a turbo be serviced ?4 c" B9 W! q" z
No specific turbo servicing is required, but regular quality engine servicing is needed% i* P. o9 F9 P' X& ?
to reduce the chance of turbocharger problems.$ G5 A1 B$ v" Z) N) p5 Z
What is a water-cooled turbo ?
2 T. A+ z' u8 A7 L3 P/ \The central part of the turbo, housing the bearings, is surrounded by a water jacket
& s3 W1 T6 l0 W1 g3 ethrough which the engine's water coolant is passed. This water continues to circulate+ S" |; e# ?. ]' v1 G; ~) Q
after the engine is turned off, cooling the turbo, and preventing heat soak., B# z0 `7 V" U1 k% J [+ b
Do I need to up grade my exhaust ?* e4 q3 w3 G0 b; K1 p
Generally not. Our systems are designed to run utilising as much genuine component" j: M) l2 r/ x
as possible. Some systems on the market promote exhaust change as it is required by% \/ E( N- H; }! i! y: y: @0 O
that particular turbo. Doing so usually picks up more noise than performance.
2 ~' r% E+ M2 p" LHow noisy should a turbo be ?) A3 S) M% q: y: Y
Only an unbalanced, worn out or damaged turbo will produce any significant turbo/ O" G3 A9 g9 c# {
noise.
; q& Q! h( E7 Z4 z) g2 vWhat is an intercooler ?& B% l( u" P9 T9 Q6 D
A special type of radiator which cools air before it enters the engine. As a turbo
5 g5 A5 v( J/ w/ N$ r4 o% @ Pcompresses air, the air heats up. Power can be increased if the air entering the engine
( t# U z% @ I( ^; X' mis cooler. The cooler air is more dense meaning that more fuel can be injected for
! f' x/ j4 t' m' `/ Ymore power.
1 P. I, |6 e& U% lWill my vehicle run ‘cooler’ with an intercooler ? }& t8 E1 e) O* f& C! @
Theoretically, but not always the case! We commonly find Intercooled 4WD vehicles8 B8 ^2 a% I3 u$ a' S5 k5 m- L
running hot due to over-fuelling and radiator restriction. Restriction meaning that hot. i. g6 w) Q& g. D/ R& l
air passes out of the Intercooler over the air conditioning condenser and finally the: e3 A0 y+ ~) @' z6 v7 E& b
radiator. The poor old radiator is left with scraps of extremely hot air and then is J0 E; Z7 Z& E1 W3 N
expected to cool the engine. We don’t advise fitting them as hot Australian conditions
/ u ^: W5 C" _/ Lcan often be the catalyst for engine heat problems." p; F+ b7 J( b' ~& ^
What will happen to my fuel consumption?
. F. b8 b' Z0 b! nMore power generally means more fuel. With a diesel turbo system, fuel consumption
& d$ J* g( V/ x$ V6 _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
