is all 1.3 engine has the same fuel consumption regardless of the brand of the car

[georgeousairess]

pareho lng ba ang fuel consumption ng 1.3 engine cars(sedan) regardless ng brands nila?????

if the cars gets older mas malakas ba un fuel consumption nia???

[jjmd3_787]

definitely NOT . . .

depende yan sa tranny, electronic control system, at weight ng car (considering you're driving each 1.3 brand in a same way).

definitely YES . . .

as a car grows older, nagiging less fuel efficient na ito. Gaya rin ng mga home appliances, tumatakaw ang konsumo ng kuryente as time goes by. You have got to be a maintenance freak para ma-maintain ang original fuel efficiency ng tsikot mo.

[vernieg]

Overall car weight is also another factor that will significantly affect fuel consumption.

The way you deliver the fuel (fuel-air mixture) can also make a huge difference.

[ghosthunter]

pareho lng ba ang fuel consumption ng 1.3 engine cars(sedan) regardless ng brands nila?????

Nope. Different engines have different performance and fuel consumption figures.

if the cars gets older mas malakas ba un fuel consumption nia???

no. just maintain it well, the fuel consumption should be the same, old or new.

[istan]

To answer ur question in the other forum.
More torque at lower RPM = mas mabilis umakyat sa slopes. (Jeepneys)
More torque at higher RPM = mas matulin sa highway (SiR)

[ehnriko]

If your 1.3 Li. engine has EFI (Electronic Fuel Injection) - it follows that it is burning lesser fuel than it's Carburated counterpart.

Metered ang fuel feed ng EFI therefore - sukat lahat ng ibinibigay ng computer (in pulse form to the injectors) sa makina sa bawat putok ng piston sa cylinders.

Meron ding effect kung 16 valve, 12 valve or 2 valves per cylinder ito... The size of the valves greatly affects fuel consumption. The analogy would be - valves are like doors... Make the doors biggers - bigger volume of gas can pass through it. Make it smaller - mas maliit din ang volume ng gas na papasok at lalabas. ANother analogy is... engines are like pumps... The bigger the intake and output ports... the bigger the capacity to pump volumes of gas... reduce this, then you reduce everything - including power. But of course, you need to balance it in order to maintain what your vehicle really needs. Di mo naman pwedeng sakalin ng husto at the expense of underpowering it... if you do, the reverse effect would happen, mas lalakas ito sa fuel, bacause it will take your vehicle longer and put more effort in moving a particular load it's carrying.

Since you are asking about fuel economy or consumption, then you might not be concerned much about speed or acceleration. Therefore, stick with engines that are EFI with smaller or lesser valves.

By the way, one hint of a fuel miser car... smaller diameter of tail pipes... but of course, presuming there are no leaks in the intake and exhaust systems - then this should be able to help.

The presumption of course is - all about stock engines without modifications yet.

Another way to find out... if the engine configuration is more square. Ask or check out the bore and stroke specs.

In my limited understanding, the bore should match the stroke.. this is measured in millimeters.

If you have the figures... please post them here so we can further expand our thoughts on this.

Types of car brands with engines having square bore and stroke configs are VW's and Hondas.

[basti08]

Sentra GX 1.3 vs Vios 1.3J?

definitely not consuming same amount of fuel...

[emms1121]

pareho lng ba ang fuel consumption ng 1.3 engine cars(sedan) regardless ng brands nila????? Parepareho lang fuel consumption pag hindi umaandar makina. Pag umandar, syempre iba-iba na because of the reasons cited above

if the cars gets older mas malakas ba un fuel consumption nia??? depende sa maintenance mo ng sasakyan..

Minsan nga mas matakaw pa 1.3 dahil sa bigat ng body.. dapat match ang power to weight ratio..

[basti08]

kahit pareho ang power to weight, factors still needed to be considered eh yung gearing, aero coefficient, kung naka-electric power steering etc.

[ehnriko]

kahit pareho ang power to weight, factors still needed to be considered eh yung gearing, aero coefficient, kung naka-electric power steering etc.

Yes you are right..

There are just too much variables to consider... for example, whats your driving style... your lifestyle... your route and your driving schedules. Traffic condition, etc.

If you normally drive in traffic and carrying more than 600kg. of weight aside from your car, then you might need a low speed tranny to be fuel efficient... since low speed tranny's can move cargo easier than it's high speed counterpart. If you live in Olongapo and need to travel 150km daily... a High speed tranny will really make a difference.

Between a Sentra and a Vios, for Manila, The Vios has lighter body compared to the Sentra. with regards to power to weight efficiency, the Vios would be a better investment.

[niky]

The number of valves doesn't really matter nowadays... most economy cars have at least three-valve or four-valve per cylinder heads... and the valves are sized to maximize flow capacity. You never want less flow capacity, as this makes the car inefficient and makes it difficult for the makers to meet emissions requirements... as it hinders the mixing of air and fuel in the cylinder.

But basically, correct... more air... more fuel... What really matters in the valvetrain is the camshaft, as this determines valve lift. A mild camshaft gives great economy at the expense of power. A high-lift camshaft opens the door wider for more air and more power. This is why Honda and Toyota use variable lift cams... it allows them to use small valve openings at low rpms for more economy, and big openings at high rpms, for more power.

Honda gearing is very short in the low gears, for good performance in the city, and tall in the high gears, for good economy. Toyota uses evenly spaced gears, but their economy is still good (bit better than Honda on some models... the same on others) because their engines have better low-end response.

A square engine gives the most linear response, but most automotive engines are undersquare... with more stroke than bore... which gives better low-end power, which makes for better fuel efficiency in traffic, as you don't need to rev hard to get going.

[georgeousairess]

thank u for ur reply