Om... O/D (over drive dipakai kalau mau ngejar setiran aja... kalau ga sedang buru-buru ga usah dipakai om... boros bensinnya... sayang juga mesinnya digeber-geber... yang aku alami di baleno 2002 matic.. dibawah 60 km... O/D kayanya ga berfungsi deh... tapi kalau sih om mau coba... do it deh... begitu spido meternya 60 km... pencet deh tuh O/D nya (posisi over drive on - lampu indikator nyala) sambil gas ditekan lebih dalam... ketika rpm sudah naik di atas 3000... om pencet lagi O/D (posisi over drive off - lampu indikator mati).. secara otomatic gigi akan berpindah ke tingkat yang lebih tinggi... sampai disini.. filing om mesti main... kapan mau on off O/D nya... selamat menikmati tarikan matic om.... tapi saya saranin jangan dipakai O/D nya kalau ga perlu-perlu banget... sekedar informasi... untuk mobil2 sekarang kayanya tombol O/D ga ada deh... terutama di SX 4... mungkin ada temen2 yang bisa jelasin ya.. untuk bisa kebut-kebutan tanpa O/D bagaimana ya caranya...
On Thu, Jan 8, 2009 at 4:30 PM, Brave2000_AU <[email protected]> wrote: > O/D itu = Over Drive > > Ini saya quote dari Om Wiki: > > Overdrive can refer to two different things. An overdrive is a device which > was commonly used in automobiles <http://en.wikipedia.org/wiki/Automobiles > > > to allow the choice of an extra-high overall gear ratio > <http://en.wikipedia.org/wiki/Gear_ratio> for high speed cruising, thus > saving <http://en.wikipedia.org/wiki/Fuel_efficiency> fuel, at the cost of > less torque <http://en.wikipedia.org/wiki/Torque> . Usually the final or > 'top' gear is called overdrive. Non direct drive gears increase torque > multiplication at the expense of higher engine rpm and thus, decreased fuel > economy. > > It also refers to a combination of gearing inside a transmission > <http://en.wikipedia.org/wiki/Transmission_%28mechanics%29> or transaxle > <http://en.wikipedia.org/wiki/Transaxle> which results in the output speed > being greater than the input speed. In the latter case, "overdrive" does > not > refer to a physically separate identifiable part/assembly. > > History > > Early manual automotive transmissions > <http://en.wikipedia.org/wiki/Transmission_%28mechanics%29> were limited > to > three or sometimes four speeds, with only the most sophisticated being five > speeds. This left an unfulfilled need for a higher gear ratio for highway > cruising, which was filled by the addition of separate overdrive units. > However, automotive manual transmissions manufactured since the 1980s tend > to include a larger selection of gear ratios > <http://en.wikipedia.org/wiki/Gear_ratio> than before, the highest of > which > is usually greater than 1:1. This trend has rendered the overdrive a > complex > and obsolete solution to economy gearing in automobiles, and very few cars > are fitted with them today, although they still appear on large trucks, > where more gear ratios are always in demand. > > Usage > > Generally speaking, overdrive (OD) is the highest gear in the transmission. > Most automatic transmissions > <http://en.wikipedia.org/wiki/Automatic_transmission> have three speeds > and > overdrive (fourth speed). Overdrive allows the engine to operate at a lower > rpm for a given road speed. This allows the vehicle to achieve better fuel > efficiency, and often quieter operation on the highway. When it is switched > on, the transmission can shift into overdrive mode after a certain speed is > reached (usually 70+ km/h [43+ mph > <http://en.wikipedia.org/wiki/Miles_per_hour> ] depending on the load). > When > it is off, the transmission shifting is limited to the lower gears. For > normal driving conditions, operation of the overdrive should be enabled > only > if the average speed is above 70 km/h (approx. 43 MPH). > > It may be necessary to switch it off if the vehicle is being operated in a > mountainous area. > > The automatic transmission automatically shifts from OD to third gear when > more load is present. When less load is present, it shifts back to OD. > Under > certain conditions, for example driving uphill, or towing a trailer, the > transmission may "hunt" between OD and the third gear, shifting back and > forth. In this case, switching it off can help the transmission to > 'decide'. > It may also be advantageous to switch it off if engine > <http://en.wikipedia.org/wiki/Engine_braking> braking is desired, for > example when driving downhill. The vehicle's owner's manual will often > contain information and suitable procedures regarding such situations, for > each given vehicle. > > Overdrive was widely used in automobiles with manual transmission > particularly in Europe (see below) and was commonly available on either top > gear alone, or on top gear and the gear immediately below (eg third gear > and > fourth gear. In this case gear changing is still possible in all gears, > even > with overdrive disconnected. Overdrive simply adds effective ranges to the > gears, thus overdrive third and fourth become in effect "third-and-a-half" > and a fifth gear. In practice this can lead to an overlap of gears in the > third/fourth and overdrive-third/overdrive-fourth ranges, providing greater > flexibility particularly in performance cars. > > How an overdrive unit works > > The overdrive consists of an electrically or hydraulically operated > epicyclic <http://en.wikipedia.org/wiki/Epicyclic_gearing> gear train > bolted behind the transmission > <http://en.wikipedia.org/wiki/Transmission_%28mechanics%29> unit. It can > either couple the input driveshaft < > http://en.wikipedia.org/wiki/Driveshaft> > directly to the output shaft (or propeller > <http://en.wikipedia.org/wiki/Propeller_shaft> shaft) (1:1), or increase > the output speed so that it turns faster than the input shaft (1:1 + n). > Thus the output shaft may be "overdriven" relative to the input shaft. In > newer transmissions, the overdrive speed(s) are typically as a result of > combinations of planetary/epicyclic gearsets which are integrated in the > transmission. In these cases, there is no separately identifiable > "overdrive" unit. A number of such transmissions and transaxles are > manufactured by Aisin <http://en.wikipedia.org/wiki/Aisin_Seiki_Co.> , for > use in vehicles produced by many different manufacturers. In older > vehicles, > it is sometimes actuated by a knob or button, often incorporated into the > gearshift knob, and does not require operation of the clutch > <http://en.wikipedia.org/wiki/Clutch> . Newer vehicles have electronic > overdrive in which the computer automatically adjusts to the conditions of > power need and load. > > Semoga membantu ya om. J > > BRgds, > > Brave2000_AU > > ^-^ BH 1718 AK - Bandung ^-^ > > From: [email protected] <baleno%40yahoogroups.com> [mailto: > [email protected] <baleno%40yahoogroups.com>] On Behalf Of > Deni Lukmanul Hakim > Sent: Thursday, January 08, 2009 3:56 PM > To: [email protected] <baleno%40yahoogroups.com> > Subject: Re: [baleno] Baleno Next G Auto 2003 > > Mau back to the topic lagi ah :) > > Saya juga punya baleno matic 2002, tapi masih gak ngerti sebenernya > fungsinya O/D itu apa ya? > Apakah kalau di gigi rendah O/D-nya dimatikan saja, dan baru dinyalakan di > gigi tinggi? > > Sudah googling tapi gak ketemu2.. > Bahkan singkatan O/D saja tidak tahu :( > > Makasih yang udah mau bantu jawab.. > > [Non-text portions of this message have been removed] > > > -- Rico BCI.349 [Non-text portions of this message have been removed]
