Pasal Kete lg.....[Transmission / Gear Box]

Ok...lame nye xupdate blog ni...xpela..xde org nk bace pon...untuk mmuaskan nafsu diri je...hehe...

haa...hari ni cite pasal transmission for car...or kalo dlm bahase bengkel org slalu panggil gear box. Orait...kalo cite pasal gear box ni mst ade 2 type of gear yg slalu korg dgr kan...1st Manual Transmission...2nd Conventional Automatic Transmission. Sbnrnye ade lg 1 transmission system technology dlm dunia ni tp jarang2 la org pkai...sbb mahal kot technology dia 2.tp dia lg bagus dr 2 system ni. name system 2 ade Continous Variable Transmission (CVT)..
Orait before masuk deep utk each type of transmission...kite kene la tau ape sbnrnye function transmission ni. The thing is engine can rotate at very limited speed tau iaitu speed yg ade kt rpm kite 2 jela...each engine ni only can produce maximum torque n horsepower at 1 point of rpm. So...gune transmission ni adalah utk menyelaraskan speed rotation of engine with the desired speed of the tyre base on the point that produce maximum torque. Gitu la secara kasarnye...

Ok...kali ni nk cite pasal Manual Transmission dulu.len2 kali cite pasal auto punye plak k. bile kite ckp gear manual...so mstla ade clutch kan. Ok gune clutch ni adalah utk connecting or disconnecting between crank shaft (shaft dr enjin) with transmission shaft. Bygkan..bile stat enjin je...crack shaft akn xbrenti2 pusing...camne kite nk connect it with transmission ni yg static tnpa brntikan crack shaft 2. so...sini la function clutch. in easy word clutch is actually allows us to smoothly engage a spinning engine (crank shaft) to a non-spinning transmission by controlling the slippage between them.

Gear	Ratio	RPM at Transmission Output Shaft with Engine at 3,000 rpm
1st	2.315:1	1,295
2nd	1.568:1	1,913
3rd	1.195:1	2,510
4th	1.000:1	3,000
5th	0.915:1	3,278

Orait...ni la basic view yg ade dlm manual gear. Kite ade 6 gear smua termasuk reverse kan. Kalo korg tgk ade 6 gear wrna biru. yg pling besau 2 gear 1...mkin kecik makin bertambah la gear dia. Yg biru hujung skali 2 gear reverse. Kalo korg tgk dia ade idler gear yg attach ke layshaft 2. Gune dia utk tuka direction of rotation. Ok green shaft lak dtg dr clutch td.kalo clutch da smbungkan crank shaft with green shaft ni then pusing la smua gear...green gear, red gear n blue gear). Tp take note k...shaft kuning (yg label to differential) ni xrotate pon kalo blue gear rotate k. It only will rotate kalo purple gear rotate. So utk rotatekn shaft ni..kene la smbung purple gear with blue gear 1st. ada pahamm~~

Ok...nmpk x tombol gear 2..haaa...sbnrnye kt tombol 2 ade 3 shaft utk selection gear propose. gear 1 n 2 pkai satu shaft n connected to first purple gear. gear 2 n 3 pkai 1 shaft n connected to 2nd purple gear. n gear 5 and reverse pkai 1 shaft n connected to 3rd purple gear. So cth nye...kalo kite nk masuk gear satu...H bar 2 kite ke kiri dulu kan...so masuk la shaft yg 1st...bile kite tolak ke atas maka 1st purple gear 2 akn atach la ke blue gear yg besau skali 2. so masuk la gear 1. cam 2 gk la utk gear 2 yg len...ni overview jela...nk cite detail lg g bengkel bukak sndri la gear box...huhu...

Ok...kalo korg tgk gear ratio lak kan.gear 1 smpai 4 biase nye reduction. makneny it reduce speed of tyre from the speed of engine. Smpai kt gear 5 da len da...sbb dia da increment ratio. Gear 5 ni kkdg org pggil dia overdrive gear. sbb bende ni la...haaa...

Orait...rasenye ckup da pnerangan aku ni utk memahamkan basic manual transmission ni...next time tulis pasal gear auto plak. Auto gear ni mmg care dia function mmg totally different concept dgn gear mnual ni. Sgt unik...bijak sungguh org yg cipta dia....huuuu....chalo~~

Brrroommm.....

Nk cite pasal Engine Kete lak ttbe...zasss~

Almost smua kete skrg ni gune 4 stoke engine. Cume ade la certain2 kete yg gune engine len cam diesel (biase kete 4wd) n rotaty engine (aku tau RX-8 je yg pkai engine ni..huhu) Ni kalo budak meche bace xtau fakta ni mmg buang negara la...lol

Ok...mmndangkn byk kete pasal 4 stoke..kite cite 4 stoke la k. korg mst pnh dgr term2 cam V6, double over head cam, 3.0 liter...haaa...smua ni adelah spec enjin 2 la. Engine consist of 2 main part; engine block and head. Engine block la kat mane piston, fly wheel, connecting rod, crank shaft and sump located. Head plak letaknye intake valve, exhaust valve, cam shaft and spark plug. haaa..budak meche bace pning...jap aku cari gmbar jap....

Haaa...gmbar ni ssuai..siap lebel da. Tgk ar yg bhgn atas 2 la Head engine. Bhgn bwh lak Engine block. Tp gmbar ni xde sump...sump 2 adelah takungan minyak hitam kt bwh engine block. Minyak hitam gune dia sbgai pelincir la spye lebeh efficient dan enjin pon tahan lame. Minyak hitam ni akn di pam oleh oil pump n with high pressure dia akn distribute ke slruh bhgn enjin (yg bawah piston je k..sbb atas piston 2 da kire combustion area da...xleh campur ngn minyak hitam)

Ok..td ade ckp pasal V6 kan...ha...sbnrny V susunan piston2 iaitu dlm V shape. 6 plak maksudny ade 6 piston utk engine 2. Orait..standard engine ade 4 6 or 12 piston la. Aku pnh tgk kene jaguar 12 piston...mmg gile beb~~ (kancil aku je 3 piston...pelik2)... orait... standard orientation lak biasenye ade in-line, V or flat shape. yg ni aku xphm sgt lak ape effect dia kat efficiency...nnt aku tnye mmber aku...

Orait..cite 4 stroke kan..ni stroke2 n condition engine pd stroke 2:
1) Intake stroke : Intake valve open, exhaust valve close, Piston moving downward
2) Compression stroke: Both valve close, Piston moving upward (compress)
3) Combustion stroke: Both valve close, spark plug ignite just a moment b4 piston reach top dead end, Piston moving downward
4) Exhaust stroke: Exhaust valve open, piston moving upward

Haishh...budak meche xtau ni mmg wajib kene rejam smpai ****.

Orait..ape yg mngawal valve2 ni dr open n close ikut stroke n ape lak yg kawal spark plug spaye dia ignite on da rite time. Ape yg kawal spark plug timing is distributor...and yg kawal valve plak kite pggil dia camshaft. budak meche xpnh dgr cam mmg trok...xskolah punye org.haha..jgn mara...ko try ar search tenet sndri tgk camne camshaft 2 look like k. Camshaft ni driven by crankshaft yg ade kt bwh engine 2 (tgk gmbar blik) dan both shaft ni digabungkan oleh timing belt. Orait...biasenye camshaft ni akn di adjust pusing one-half dr crankshaft. So gear camshaft punye gear mst kecik skit la kan...Hurm...kt sini la dtg nye term2 pelik cam double over head cam. maksudnye...camshaft 2 letak nye dekat atas head. double plak maksudnye ade 2 camshaft yg mane utk setiap cylinder ade 2 intake valve and 2 exhaust valve. so masing2 camshaft akan control 1 intake valve and 1 exhaust valve. Xslh aku kete lame2 dia xpkai overhead cam. cam shaft dia letak kt bwh n dia xpkai timing belt pn. Xpnh tgk mende ni...kalo nk tau try la cari sndri...

K...mls da nk tulis...nnt smbung part len2 plak dlm kete...ni basic je...at least kalo korg ade kete bace n pahamkn la...:)

chalosss~~