Q: bakit ito Di may glow plug? (4jb1)

**fierari** · October 2nd, 2003 01:07 PM

http://www.isuzuengines.com/JB_4jb1-pu.htm

di ba walang glow plug direct injection? :confused:

SPECIAL FEATURES: * Direct Injection
* Glow Plug Starting Assist
* Replaceable Cromard Dry Liners

**yebo** · October 2nd, 2003 10:31 PM

para sa cold climate siguro sir. hula ko lang ha.

**Bubbles** · October 2nd, 2003 11:17 PM

May glow plug lahat ng diesel engine.

**sir_jeep** · October 3rd, 2003 09:59 AM

Originally posted by Bubbles
May glow plug lahat ng diesel engine.

kooooorrrrrrreeeeek!!!!

**fierari** · October 3rd, 2003 10:16 AM

ive read here before na wala daw? naguguluhan na ko heheh

**Skywalker** · October 3rd, 2003 07:04 PM

Originally posted by Bubbles
May glow plug lahat ng diesel engine.

Wala namang glow plug ang crosswind ah..

Ang pagkakaalam ko rin wala ito sa mga direct injection.

Baka ka para sa cold climates ang GP.

**rsnald** · October 3rd, 2003 07:23 PM

Originally posted by Skywalker
Wala namang glow plug ang crosswind ah..

Ang pagkakaalam ko rin wala ito sa mga direct injection.

Baka ka para sa cold climates ang GP.

I second da moshon your honor!! :D

wala ngang glow plug ang crosswind and it's siblings or big brothers (fuego, trooper, NKR, elf trucks)

malamang nga sa cold climate lang. para i-improve yung flow ng fuel pag malamig at i-preheat na rin yung fuel bago pumasok sa pre-combustion chamber ng makina.

**Ungas** · October 3rd, 2003 07:38 PM

Sa pagkakaalam ko rin may glow plugs ang diesel engines. Kailangan ito lalo na pag papaandarin ang makina sa umaga.

**Bubbles** · October 4th, 2003 12:34 AM

RSNALD, paki explain naman.
paano magiignite ang diesel na walang pre-heater? mas mataas ba ang compression ng Di kaya isang compress lang ng piston mataas na ang air temp?

possible magstart ang diesel na walang GP pero matagal na pihitan ito ng starter. And like my engine na 24 volt, sobra lakas ng starter, bilis pihit makina, start maski walang pre heat pero kung 12 volts lang, di naman ganun kalakas starter..???

**Yoda** · October 4th, 2003 04:32 PM

Diesel engines don't burn fuel by ignition (ie. spark plug). On the intake stroke, the piston moves down and draws air only. When the piston moves up, it compresses the air, thereby raising its temperature. Then fuel is injected and consequently burned by the hot air, producing power.

Kapag malamig, malamig din ang cylinder. So this has the effect of reducing the temperature of the compressed air, which might result in hard starts. Thus, heater plugs are used to compensate.

Hope this helps!

**Ungas** · October 4th, 2003 09:53 PM

Originally posted by Yoda
...Kapag malamig, malamig din ang cylinder. So this has the effect of reducing the temperature of the compressed air, which might result in hard starts. Thus, heater plugs are used to compensate...

That's what I was pertaining to. I guess some people are much greater in explaining more than I do. :D

**yebo** · October 4th, 2003 11:17 PM

ehem, maka-sabat lang po konti.

di po lahat ng diesels may heater/glow plug. yan po kasi mga engines ng cars nyo, remember designed yan ng japan for cold climates. pang-japan, US or europe na market. malamig po sa kanila kaya may glow plugs yan. now since mga diesel cars sa pinas ay cbu ang engine galing japan, di na pagaksayahan ng hapon na baguhin pa ang design ng engine nila para lang maging cute ang dating sa mga pinoy. napakaliit ng market dyan para gawin nila yun. saka malamig na din naman bandang ilocos at mountain province.

pag ang diesel engine po ay designed for tropical climates, walang glow plugs yan. yung mga nasa malaysia, indonesia, thailand kung saan gawa sa kanila yung mga engines nila, walang glow plugs yan.

saka depende din yan sa compression ratio. kung mataas ang ratio like 20+:1 kahit walang glow plug yan aandar yan. kahit malamig.

yun nga lang ang diesel ay nagiging parang gulaman pag winter kaya ang diesel trucks sa temperate climates may fuel heater.

**Bubbles** · October 6th, 2003 12:41 AM

Yebo, kahit mainit panahon hirap start diesel kapag completely cooled down ang engine. MB100's for example. try removing the relay for the heater. ayaw talaga mag start ang punieta

**belcher** · October 6th, 2003 09:49 AM

My ride is using a 4jb1 surplus engine, with glow plug. Pero di ko kinabit ang wiring ng glow plug/heater. Andar siya agad anytime kahit sa umaga.

**Skywalker** · October 6th, 2003 11:21 AM

Originally posted by Bubbles
Yebo, kahit mainit panahon hirap start diesel kapag completely cooled down ang engine. MB100's for example. try removing the relay for the heater. ayaw talaga mag start ang punieta

Ano ba ang compression ratio ng MB100?

May naalala akong owner ng bagong Revo diesel, akala nya direct injection ang makina nya kaya pihit kaagad ang starter nya. Nagi-start naman dahil siguro bago pa at mataas pa ang compression, pero I advised him to let the glow plug do its work. Tinuro ko yung indicator sa dash para malaman nya na maiinit na at pwede na i-start.

**fierari** · October 6th, 2003 11:22 AM

Originally posted by rsnald
I second da moshon your honor!! :D

wala ngang glow plug ang crosswind and it's siblings or big brothers (fuego, trooper, NKR, elf trucks)

malamang nga sa cold climate lang. para i-improve yung flow ng fuel pag malamig at i-preheat na rin yung fuel bago pumasok sa pre-combustion chamber ng makina.

4jb1 is fuegos 2.8 engine.

**Skywalker** · October 6th, 2003 11:25 AM

Originally posted by belcher
My ride is using a 4jb1 surplus engine, with glow plug. Pero di ko kinabit ang wiring ng glow plug/heater. Andar siya agad anytime kahit sa umaga.

Exactly as what yebo has pointed out :D

**sir_jeep** · October 6th, 2003 01:01 PM

All functions in a modern diesel engine are controlled by the ECM communicating with an elaborate set of sensors measuring everything from R.P.M. to engine coolant and oil temperatures and even engine position (i.e. T.D.C.). Glow plugs are rarely used today on larger engines. The ECM senses ambient air temperature and retards the timing of the engine in cold weather so the injector sprays the fuel at a later time. The air in the cylinder is compressed more, creating more heat, which aids in starting.
Smaller engines and engines that do not have such advanced computer control use glow plugs to solve the cold-starting problem.

Hope this helps.................... saka po pala lahat ng diesel engines DI........:-)

**HBOY** · October 6th, 2003 04:35 PM

baket yung MB wagon ko 21:1 ang ratio.. hirap pa rin mapaandar ng walang glowplug....??

**rsnald** · October 6th, 2003 06:49 PM

I wish Doc Diesel were around to back me up... di ko to specialty to

anyways, to answer some of the questions f Mr. Bubbles and the others.. at magkaron ng konting kalinawan, please read the following links.

http://www.me.iastate.edu/biodiesel/Pages/bio14.html
http://www.isuzu.co.jp/world/technol...cleaner01.html

simply put, a direct inject engine doesn't need glow plugs because fuel is directly injected into the cylinder. it relies solely on the compressed hot air to ignite.

yun lang muna at di ko expertise to. let's wait for engine experts to give their answers.
basta, I can say with absolute certainty, alang glow plugs ang crosswind. :D
tanungin nyo si Pres Bulldog kung meron yung Fuego nya, 4JB1 makina non, saka yung kay Secreatry tebs, his Isuzu MU. 4JB1 din ata makina nun.

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Q: bakit ito Di may glow plug? (4jb1)

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