Reason I asked such a question is that we have a Swift diesel and Chevrolet Beat .Chevrolet Beat is more comfortable to drive and if you are a sedate driver,you need not downshift that frequent,you can up shift early and cars simply rolls at 30km/h in fifth gear.But you have to downshift quit frequent to make overtaking maneuvers though.Our Swift has turbo lag.So if you are driving at 3 gear at 40 km'h ,you have to down shift to tackle the turbo lag to overtake.
Guide: How To Drive and Maintain a Diesel Car?
- Thread Starter raj_5004
- Start date
That's exactly what I mentioned. In the situation that you have mentioned, it all depends on the state of tune of the engine and the selection of gear ratios. The Renault 1.5 DCi and the Ford 1.4 TDCi have virtually zero turbo lag and gobs of torque down the rpm range.
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Thread Starter
#64
The suspension maybe the same, but diesels have a stiffer setup in front because of the additional load.
My question: will diesel engines be affected if they are not driven much (low kms) ?
If they are not turned on for a long time ?
Our alto had done 20K Kms in 6 years. But still on my brother's insistence, we bought a verna CRDI.
i am afraid that the engine may get affected if the car is not driven regularly![[confused]](https://www.theautomotiveindia.com/forums/images/smilies/Confused.gif "Confused [confused]")
If they are not turned on for a long time ?
Our alto had done 20K Kms in 6 years. But still on my brother's insistence, we bought a verna CRDI.
i am afraid that the engine may get affected if the car is not driven regularly
My question: will diesel engines be affected if they are not driven much (low kms) ?
If they are not turned on for a long time ?
Our alto had done 20K Kms in 6 years. But still on my brother's insistence, we bought a verna CRDI.
i am afraid that the engine may get affected if the car is not driven regularly
If they are not turned on for a long time ?
Our alto had done 20K Kms in 6 years. But still on my brother's insistence, we bought a verna CRDI.
i am afraid that the engine may get affected if the car is not driven regularly
Modern CRDI engines does not have any issues like the older ones like:-
You must drive them daily.
Never let them parked for some weeks etc etc.
When my Corolla was bought my father just got it home and kept it parked because I was to be the first person to drive it and then the Corolla after being parked for about a fortnight suddenly went for a 700 kms long trip in hills,highways and all....but no issues at all.
Now one more question:-
TURBOCHARHED CARS(ESPECIALLY DIESELS) ARE SAID TO HAVE SOME THING CALLED 'TORQUE STEER'.WHAT IS THIS TORQUE STEER?
My guess:While going uphills etc when we are turning suddenly if the turbo comes to life(we cross 2000 mark while taking turn),then tyres tries to either loose grip or turn the car slightly more than we want.Is this the torque steer?
You must drive them daily.
Never let them parked for some weeks etc etc.
When my Corolla was bought my father just got it home and kept it parked because I was to be the first person to drive it and then the Corolla after being parked for about a fortnight suddenly went for a 700 kms long trip in hills,highways and all....but no issues at all.
Now one more question:-
TURBOCHARHED CARS(ESPECIALLY DIESELS) ARE SAID TO HAVE SOME THING CALLED 'TORQUE STEER'.WHAT IS THIS TORQUE STEER?
My guess:While going uphills etc when we are turning suddenly if the turbo comes to life(we cross 2000 mark while taking turn),then tyres tries to either loose grip or turn the car slightly more than we want.Is this the torque steer?
I did not find with the old (Indica / Indigo) diesel's either.
Under sudden acceleration the power gets to one (Right) wheel quicker than the other, so car tends to pull to the right (lasts for less than 10 seconds). More common on FWD.
It's caused due to unequal length of drive axles.
Under sudden acceleration the power gets to one (Right) wheel quicker than the other, so car tends to pull to the right (lasts for less than 10 seconds). More common on FWD.
It's caused due to unequal length of drive axles.
Once again, nice question Vipul. I will try to tell you what I know.
Your guess is right. When there is a sudden burst of power transmitted to the wheel, they tend to loose traction. This is torque steer in simple terms. Also, note that this phenomenon is limited to FWD vehicles only.
Earlier when the transmission box was not at the centre of the car, one of the shafts (from gear box to front wheels) was longer than other. So in case of acceleration, the longer axle will tend to twist more than the shorter one. So, this will cause the shorter one to accelerate more. So auto engineers came up with a solution. They made the longer axles's dia larger than the shorter one. This caused the larger one to twist less (we have read this in our engineering classes). It was done in such a way that the resultant twist of both axles became equal. This held true upto a limit. Beyond that limit of acceleration, torque steer again came into action. So, torque steer was not eradicated completely...
Auto engineers then came with advanced design in which both the axles are of equal length. So, above mentioned reason is eradicated now. But still torque steer can be experienced on a FWD vehicle. When the engine is torque rich (diesel cars) and accelerator pedal is pressed hard (both petrol and diesel cars), high torque is developed. At this instant, the weight of the car starts transferring to the rear set of wheels. This causes the front wheels to loose traction and spin. The situation is aggravated in case of loose traction( I have experienced this while climbing up a road made of loose pebbles at Coorg). This thing is also called Torque steer.
Just now I recall that I have seen 4WD vehicles (almost all of them) in which, the transmission box for front wheels is offset from centre. So IMO, these vehicles might experience torque steer in true sense.![[thumbsup]](https://www.theautomotiveindia.com/forums/images/smilies/Thumbs%20Up.png "Thumbs Up [thumbsup]")
Your guess is right. When there is a sudden burst of power transmitted to the wheel, they tend to loose traction. This is torque steer in simple terms. Also, note that this phenomenon is limited to FWD vehicles only.
Earlier when the transmission box was not at the centre of the car, one of the shafts (from gear box to front wheels) was longer than other. So in case of acceleration, the longer axle will tend to twist more than the shorter one. So, this will cause the shorter one to accelerate more. So auto engineers came up with a solution. They made the longer axles's dia larger than the shorter one. This caused the larger one to twist less (we have read this in our engineering classes). It was done in such a way that the resultant twist of both axles became equal. This held true upto a limit. Beyond that limit of acceleration, torque steer again came into action. So, torque steer was not eradicated completely...
Auto engineers then came with advanced design in which both the axles are of equal length. So, above mentioned reason is eradicated now. But still torque steer can be experienced on a FWD vehicle. When the engine is torque rich (diesel cars) and accelerator pedal is pressed hard (both petrol and diesel cars), high torque is developed. At this instant, the weight of the car starts transferring to the rear set of wheels. This causes the front wheels to loose traction and spin. The situation is aggravated in case of loose traction( I have experienced this while climbing up a road made of loose pebbles at Coorg). This thing is also called Torque steer.
Just now I recall that I have seen 4WD vehicles (almost all of them) in which, the transmission box for front wheels is offset from centre. So IMO, these vehicles might experience torque steer in true sense.
Thanks a lot buddy,I got my doubt completely clarified.It looks like you are some automobile engineer..right?
As I have already mentioned,this is not a thread,instead this is a school where we are learning a lot(I request mods to make it a sticky).The concept of torque steer is now clear..let's move ahead with another issues..
Okay buddy you said that one shaft is long and another is short,but then front wheels can turn in both the directions,now when they turn towards the direction of the longer shaft then won't they result in excessive torque steer?
Secondly:Why it is so that in 4WD vehicles torque steer is lesser than others?
Thirdly:Can't the traction control help here?
As I have already mentioned,this is not a thread,instead this is a school where we are learning a lot(I request mods to make it a sticky).The concept of torque steer is now clear..let's move ahead with another issues..
Okay buddy you said that one shaft is long and another is short,but then front wheels can turn in both the directions,now when they turn towards the direction of the longer shaft then won't they result in excessive torque steer?
Secondly:Why it is so that in 4WD vehicles torque steer is lesser than others?
Thirdly:Can't the traction control help here?
i fell in love with diesels after driving my Xylo. the mCrdi engine is a bliss in the low rev range. like absolute bliss. but then this engine has a flaw and that is as revs build up power packs up its stuff and leaves. like very very less. low and low midrange is fantastic but as soon it reaches mid and high midrange its pathetic. and high rev range its nonexistent. lol
but on the contrast- after driving my uncle's manza, low end is not soo good. there is turbo lag that is sort of evident until 2K RPM. after 2K it flies. and it goes until high rev range. power keeps coming in bucketloads till 6-7K RPM. so driving these two engines back to back, needs a bit of a different style of driving.
but on the contrast- after driving my uncle's manza, low end is not soo good. there is turbo lag that is sort of evident until 2K RPM. after 2K it flies. and it goes until high rev range. power keeps coming in bucketloads till 6-7K RPM. so driving these two engines back to back, needs a bit of a different style of driving.
Drive a mEagle and you will really praise the top end of this engine.In fact I feel its the best diesel engine and the only with such high-revving but still great power delivery characteristic.Only issue is that the engine hasn't got the car it deserves.
Either you made a typo or you have driven a Manza petrol,because diesel Manza can never cross even 5k mark,then 6-7k is a talk of far things..
Either you made a typo or you have driven a Manza petrol,because diesel Manza can never cross even 5k mark,then 6-7k is a talk of far things..