Nissan Car Lounge - Almera, Juke, Latio, Qashqai, Sylphy, Teana Owners > Latio
My FC Getting Better With Low RPM
limck007:
--- Quote from: SoL on December 17, 2008, 11:44:14 AM ---Yes, idling is discouraged because idling occurs when you stop, which means engine rpm is not enough to keep engine running without using fuel.
At high speeds like 45 and above(for me), when u lift your leg off accelerator, fuel injection stop, thus engine braking. If you don't believe, try this:
1.Get your speed up to 70-80km/h.
2.Release accelerator. Your car speed should slow down very fast. This is engine braking, and no fuel is being consumed at this point.
3.At around 45km/h, you should feel a jerk as fuel injection resumes and your car is free wheeling(less engine braking).
This is tried and tested on 4AT. For CVT, your mileage may vary.
--- End quote ---
i do get the engine braking feel when i life off the acceleratior after i hit 80 or 90km/h. when it fall till 60km/h, i step again to pick up to 80/90 loh.
but 2 questions here>>
1)when i approaching traffic light, is it better for me to swtich to N then slowly break & rest at N
or
i brake slowly to a stop (in D mode) then switch to N to wait for traffic light to turn green?
which is better >??
2)Since idling is discouraged, if i am stopping at traffic light, do i switch to N or P or leave it at D??
liewks:
The Versa Service manual states (CVT):
--- Quote ---Lock-up clutch is engaged when vehicle speed is approximately 18 km/h (11 MPH) to 90 km/h (56 MPH).
--- End quote ---
It is likely that DFCO is maintained at least until lock-up is disengaged. Lifting the foot off the accelerator pedal quickly tends to nudge the ECU into DFCO. A quick gentle tap helps to cancel DFCO. Watch the tach + speedometer and you can guess what the ECU/TCM are up to.
For CVT's, the highest gear ratio gets you 10km/h for every 200rpm. So 80km/h happens at 1600rpm. Accelerating in an overly enthusiastic manner will guarantee that the TCM (transmission control module) never allows this gear ratio until you brake/shift into N/etc... and re-accelerate at a more moderate pace.
While the HR15DE generates maximum torque at ~4400rpm, it does not mean that the engine is actually generating peak torque at 4400rpm under all conditions. It really depends on the engine load. Idling the engine at 4400rpm is not going to give you 140Nm of torque. There is an interplay between throttle, RPM and transmission loading.
SoL:
--- Quote from: detach8 on December 18, 2008, 12:30:53 AM ---u shouldn't cruse in N. it damages your gearbox.
--- End quote ---
Is there any proof of this? Because some cars do, some cars don't.
Specifically, latio repair manual?
fri13th:
--- Quote from: liewks on December 18, 2008, 02:33:21 AM ---The Versa Service manual states (CVT):
It is likely that DFCO is maintained at least until lock-up is disengaged. Lifting the foot off the accelerator pedal quickly tends to nudge the ECU into DFCO. A quick gentle tap helps to cancel DFCO. Watch the tach + speedometer and you can guess what the ECU/TCM are up to.
For CVT's, the highest gear ratio gets you 10km/h for every 200rpm. So 80km/h happens at 1600rpm. Accelerating in an overly enthusiastic manner will guarantee that the TCM (transmission control module) never allows this gear ratio until you brake/shift into N/etc... and re-accelerate at a more moderate pace.
While the HR15DE generates maximum torque at ~4400rpm, it does not mean that the engine is actually generating peak torque at 4400rpm under all conditions. It really depends on the engine load. Idling the engine at 4400rpm is not going to give you 140Nm of torque. There is an interplay between throttle, RPM and transmission loading.
--- End quote ---
Bro u sibei technical in ur post :thumbsup: but hor too chim i see liao :blink: just wondering are u a engineer?
LatioR:
--- Quote from: fri13th on December 18, 2008, 12:08:19 AM ---
--- Quote from: LatioR on December 14, 2008, 01:36:47 AM ---hi bro, u should minus 2~3 l to calculate the correct FC mah..rite? :devil2:
[/quote
U will jealous or not :devil2:
--- End quote ---
hi bro, not jealous lah, envy more likely :bleh:..my last FC only at 12.5km/l bcos of total jammed hr @90mins (both in and out from Sg)
--- End quote ---
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