1. Turbine housings:
Below is a small chart translating the turbocharger information into more common A/R ratios that we are all used to seeing
these days as used with Garrett turbochargers.
6 cm2 = 0.41 A/R
7 cm2 = 0.49 A/R
8 cm2 = 0.57 A/R
9 cm2 = 0.65 A/R
10 cm2 = 0.73 A/R
11 cm2 = 0.81 A/R
12 cm2 = 0.89 A/R
All TD04 based turbochargers use from 5 to 7cm turbine housings (to my knowledge) and TD05 series turbochargers generally use anywhere from 6 to 10cm housings.
2. Compressor wheels:
Kinugawa compressor wheels are usually a number joined with a letter. The number is a specific wheel and the letter is the shape or blade arangement (trim). There are G,T,GK,TK,KX series wheels. "G" series compressor wheels are usually alternating blade heights and curvature of the fins, where as "KX" series wheels are all lateset designed with 3rd-order surface point milling.
- 3D Design and Three-dimensional Flow Analysis.
- The new type of wheel can reduce the impact loss and eddy loss of airflow. Higher compressure ratio and broader flow range available.
- The highest efficiency of Compressor can reach 81.8%
|Free Surface||Ruled Surface|
|Process||Point Milling||Flank Milling|
|Machining Time||Slow 120 mins.each||Quick 15 mins.each|
1. Free Surface can be only produced by Point Milling
|1. Ruled Surface can be produced by Flank Milling
2. Low efficiency
3. Only suitable to the very easy design of compressor wheel
4. Mainly for fundamental mechanical engineering such as Centrifugal compressor
3. Turbine wheels:
Any TD04 series compressor wheel will fit on any TD04 series shaft weather its TD04H or TD04HL or even TE04H.
TD04 and TD05 series compressor wheels are not interchangeable because of the size of the hole in the compressor wheel.
You CAN sleeve a TD05 wheel to fit a TD04 shaft but this requires precise balancing and if the compressor wheel is too big.
It MAY cause the shaft to snap a high speeds or wear on bearings un-evenly and cause a failure.
|Turbocharger||T = Exhaust Gas Turbocharger
D = Turbo design series (not alphabetical)
04 = Turbine wheel frame size
H = Optional suffix for enlarged diameter:
|Compressor||08 = Compressor size:
At the highest efficiency on the compression line ratio
π = 2, the air flow is 0.08 m3/sec.
T = Compressor Wheel design type (not alphabetical)
|Turbine||H = Optional suffix for wheel width:
S = small
M = medium
L = large
R = Optional suffix for reverse rotation direction
6.5 = Turbine Housing throat area = 6.5 cm2
(this is the dimension A in A/R) or VG for Variable Geometry
or total area plus suffix T/S for Twin Scroll housing
|Hybrid Turbocharger||When using a Compressor wheel from another Turbine series, it is called a hybrid Turbocharger, for example :
In this example a 13T compressorfrom the TD04H series is combined with a TD04 series turbine.