Fahamu kuhusu matumizi ya OverDrive (OD) kwenye gari automatic

Huu ni uzi wa tatu nausoma humu kuhusu hiyo OD lakini sipati kitu maana naona nachanganywa tu
 
From RAV4 operation Manual (b)Using engine braking To use engine braking, you can downshift the transmission as follows: Turn off the overdrive switch. The “O/D OFFº indicator light will come on and the transmission will downshift to the third gear. Shift into the “2º position. The transmission will downshift to the second gear when the vehicle speed drops down to or lower than the following speed, and more powerful engine braking will be obtained. Two-wheel drive models 89 km/h (55 mph) Four-wheel drive models 82 km/h (51 mph) Shift into the “Lº position. The transmission will downshift to the first gear when the vehicle speed drops down to or lower than the following speed, and maximum engine braking will be applied. Two-wheel drive models 41 km/h (25 mph) Four-wheel drive models 44 km/h (27 mph
Good driving practice If the transmission is repeatedly upshifted and downshifted between third gear and overdrive when climbing a gentle slope, the overdrive switch should be turned off. Be sure to turn the switch on immediately afterward. When towing a trailer, in order to maintain engine braking efficiency, do not use overdrive.
a)Normal driving 1.Start the engine as instructed in “How to start the engineº in Part 3. The transmission must be in “Pº or “Nº. 2.With your foot holding down the brake pedal, shift the selector lever to “Dº. In “Dº position, the automatic transmission system will select the most suitable gear for running conditions such as normal cruising, hill climbing, hard towing, etc. Always turn the overdrive switch on for better fuel economy and quieter driving. If the engine coolant temperature is low, the transmission will not shift into the overdrive gear even with the overdrive switch is on.
 
Hii ni mara ya tano nasoma kuhusu hii OD na bado hata sijaelewa, naona kuchanganyikiwa tu. Kama kiswahili sijaelewa kingereza itakuaje sasa?
 
Nafikiri hii ni mara ya kumi tunatoa hili some!
Hilo somo liendelee tu mkuu maana pamoja na kwamba gari la automatic ni rahisi kuendesha kuna mambo kama hiyo O/D wengi hawaielewi na mbaya zaidi hata mafundi wetu pia kwenye hizi garage zetu kutokana na miaka yote kuwa exposed na gari manual
 
Hii ni mara ya tano nasoma kuhusu hii OD na bado hata sijaelewa, naona kuchanganyikiwa tu. Kama kiswahili sijaelewa kingereza itakuaje sasa?
Mzee tafuta mkalimani. Kulalamika kwamba huelewi hata ufafanuzi wa kitaalam unapotolewa na bado unalalama inaonyesha una elimu ya kiwango cha juu katika Nyanja ya malalamiko. Kama mtu kwenye njaa Amepewa maji, hakutosheka, kapewa chai hakutosheka, kapewa uji bado, kapewa chakula anadai kanywa chai Mara tano hakushiba, je akila nyama na ugali ndio atashiba?
 
Magari mengi taa ya OD inapaswa kuwaka Kama Ikimaanisha Over drive iko Off
Na iwe Imezima ikamaanisha OverDrive iko On.

Sasa nimegundua wengi wakiona taa inawaka huminya Button ili izime Kumbe ndio wameweka kwnye OD.

Kwa tafsiri rahisi ni kwamba OD ikiwa off gari litakuwa kwny low gear ambayo ni kama 1,2,3 ambayo sio nzuri kama unaendesha zaidi ya 30ml/hr.
OD ikiwa on gari linakuwa na gear zote i.e 1-5 au 1-6 kutegemea muundo, hapo unaweza kwenda speed yyte unayotaka bila hofu ya engine kutumia mafuta mengi.
Taa kuwa on/off inategemea na muundo wa gari na sio gari zote zinafanana.
Ni OD kuwa on mara zote unapoendesha ili hata ukiwa mwendo wa kasi usipate usumbufu wa kubadili kila saa.
Hayo ni maoni yangu
 
Masaiboi umeelewa, ikiwa gali ina zaidi ya mwendo kasi wa 120km kwa Saa, ukitoa overdrive Yaani Ikiwekwa off ingini inalazimishwa kurudi gia ya nyuma yake yaani, lower gears, mfano toka nne itarudi tatu, kwa four speed.
 
ngoja nicheki mzee ...

Hebu tulia na usome kwa makini.

Katika hali ya kawaida OD IS ON na gari inatakiwa iendeshwe hivyo(isipokuwa kwenye situation fulani)ndio maana hakuna warning light.

OD ni nini? OD inasaidia gearbox Ku over ride engine maana yake ni kuwa gari Ina engage next gear bila rpm kufika maximum na hii inasaidia kuokoa mafuta. Mfano unaweza kuendesha gari 50kph na ikafika hadi gear namba tano.

Ukizima OD yaani OD OFF umeondoa uuwezo wa gearbox Ku over ride engine kwahio gear haita engage next one mpaka maximum rpm na hoi inakupa more power hence consume more fuel. Ukiweka OD OFF unaweza kupush gear namba mbili tu hadi 60kph wakati OD ON gari st 60kph inakuwa gear namba tano na rpm Kama 1500 hivi.

Kifupi unatakiwa uendeshe gari ikiwa OD ON tu na endesha gari OD OFF kwa waksati maalum mfano Ku overtake au kupanda mlima mkali au drag race.
 
Exactly
 

"One should refer to the car's owner's manual for the proper speed to run at overdrive."SOURCE:WIKIPEDIA...Sasa naona Kama mkuu unanilisha matango pori kwa sababu jamaa kwenye vyanzo tofauti wanasema OD inapaswa kuwa operational ktk kiwango maalum cha speed,sasa ukiniambia OD inatakiwa kuwa on at all time napata ugumu kukuelewa nishawishi kwa hoja mkuu,tuondoane ujinga magari wameyajenga weupe huko ng'ambo Sie ni kuendesha tu.
 
Jamani anayejua na mwenye maelezo yakueleweka aweke basi, mimi huwa nabonyeza nisiione tu keenye dashbodi coz naona kama ikiwaka nimekosea.

Please naomba maelezo ya kueleweka
 

Huu ndio usahihi !
Principle ni kuhakikisha hakuna taa inawaka kw dashboard
 

Asante mkuu, naomba kukuamini
 

Mkuu vipi kwenye swala la wese
 

Asante kaka
 
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