Technical terms and details-explanations

[dr_nishu]

Have a few questions.

1. Does opening one wheel by self(using wrench) corrupt the alignment of the tyres?

2. What is the life of general coolant and gear oil ?
3. Do cat con require any service within the life of a car?

 

1. Haven't seen & experienced yet, even in cars having Wheels of Un-equal diameter.

2. For BS-III Alto, its 20-30k or 2-years.

3. No, Its completely Sealed & Non-Servicable part, Only Replacement is advised for clogged Cat cons. 

[architkhashu]

is it true that an automatic gears do not reveal or hinder the performance in terms of power and wat is the difference b/w a normal AT gearbox and a DSG gearbox ???how come that most of the top speed cars lay importance on AT gearbox rather than manual ??????

[Alok Mathur]

Distributor distributes the current spark plug in S.I. Engines but what distributor does in a C.I. engine?

[praji.ooo]

No spark plugs, so no distributors in CI engines. Self ignited when fuel is injected to the compressed air.

[vr.46]

Why is Quattro not possible on DSG boxes of Audi Vehicles?

[creativebala]

Has SX4 lost its USP of high GC?

Only its ZXI variant is 180mm where as its VXi or LXi is just 170mm which is the same as Swift/Punto or many other cars in today's market.

[sgiitk]

Many Spark Ignition engines also do not have distributors - Santro, Accent, Civic are examples. The plugs are grouped in pairs with independent coils and the spark generated based on the crank sensor. One cylinder of the pair is entering the Power Stroke while the paired one is at the end of the Exhaust Stroke. Thus the spark only matters in the first. Modern engines tend to do away with the distributor for better reliability and precision of timing.

[rahul1810]

@CB

VXI comes with 15 inch tyres, unlike the 16 inchers that come with ZXI. Also even then these figures are very good for a sedan, which conventionally have a low slung profile. Quite a few liked SX4, but felt that it was too high for a Sedan when earlier ZXI GC was 190 mm. So with the current 180 mm, it gives the best of both worlds.

[creativebala]

Whats the soln. for Clutch Shuddering?

My Swift jerks while starting in first gear, after which it vanishes. I got used to it, now my question is What is to be done to over come it?

 

I googled it, but find no solution, some says

-let the air in the clutch system bled out

-to drain the clutch fluid and refill it. there may be some air which can result in shudder

-flywheel problem

 

Have anyone of you experienced this?

[sgiitk]

bala: I guess you have to live with it. There is a very slight misalignment which is best left untouched.

[creativebala]

When I enquired MASS, they said, Clutch total wornout and need to be replaced on next service. I thought it won't be a worn out as I don't feel any engine running excess or anything on that sort.

It's coming into picture only while starting from standstill or just moving in 1st gear very slowly, so as you said, I will live with it sir.

[sgiitk]

If it is an old car then the clutch can be worn out. When the clutch starts slipping then it is fat too late. If the car has done a fair mileage then get the clutch replaced. I was assuming that the mileage was low.

[rki2007]

What do you mean by body roll

[creativebala]

In tight corners, car's body tends to go out of tyre's line. This is common when the car is high. So SUV or MUV's will have more body roll.

[goenkakushal]

As the name suggests body roll is the phenomenon of the body of a car to roll bend/ tilt  mostly sideways, This is observed when vehicle is steered suddenly or while driving on a hill under these conditions the body of the vehicle tends to tilt towards the opposite direction following newtons law.

Effect- This causes uneven distribution of weight disturbing the center of gravity hence disbalancing the vehicle. It also results in poor handling and makes vehicle unstable at high speeds. It may also cause the vehicle to topple.

 

Body roll is found in cars with high roof and SUV

[goenkakushal]

Can and one distinguish between a normal auto and a DSG.

Advantages and Disadvantages or both plz

[arun1987c]

Hi Folks,

 

Im very weak in the technical aspects. I would like this thread to be used for asking some queries on technical things like, What is BHP, How does a turbo work, etc.

 

And my first question is about Paddle shift, How does a paddle shift work? Why is it available on the AT variants?

[BonFre]

Threads merged: Kindly search existing threads before creating new ones.

[dr_nishu]

Hi Folks' date='

 

Im very weak in the technical aspects. I would like this thread to be used for asking some queries on technical things like, What is BHP, How does a turbo work, etc.

 

And my first question is about Paddle shift, How does a paddle shift work? Why is it available on the AT variants?

[/quote']

 

-BHP(Brake horse power) is basically a unit to measure the Output power of a machinery.

& 1BHP=746 watts.

 

-Turbo: Its basically a blower-type air blowing device attached to the engine, which helps in rushing the Air to the engine. Its always driven by a Pressure generated by the Exhaust Gases.

 

-Paddle Shift: These are basically a Set of + & - switches behind the steering wheel of sophisticated Automatic cars & are respectively meant for forced/Intentional Upshifting or Downshifting of the gears.

[arun1987c]

@ Dr Nishu - So the paddle shifts are only for AT variants or is it avaible in some MT variants also. Is paddle shifts available in any hatchbacks in India?

[creativebala]

Paddle shifts are only for autos. No hatch has it in India. UpComing jazz might have it. If brio too gets it, Honda might challenge every other hatch and entry sedan with it.

[arun1987c]

@creativebala - Wow if Brio gets it, that would be my option then. I like the paddle shifts, it gives a feel like F1 cars when we see those levers below the steering wheel

[sarabjeet]

-Paddle Shift: These are basically a Set of?+ & - switches behind the steering wheel of sophisticated Automatic cars & are respectively meant for forced/Intentional Upshifting or Downshifting of the gears.

Well no! Certain high performance cars such as Mercedes CLK where available with manual paddle shifts but the car had its sticker price of 1 million pound. People didn't get use to such shifts which resulted in very expensive cluctch and gear box replacements.

If I am not wrong Aerial Atom V8 along with few british cottage industry cars still comes along with manual transmission paddle shift.sarabjeet2011-08-14 06:17:46

[dr_nishu]

@sarabjeet;

For Manual Gearboxes there's already a Manual Gear shifter, so what's the need for a seprate Paddleshifter !!

I think that must be an dedicated gear shifter near/behind the steering wheel for faster On-the move down/upshifts.

Whereas, Paddleshifters is the Automatics serve some additional seprate role.

[sarabjeet]

@sarabjeet;

For Manual Gearboxes there's already a Manual Gear shifter' date=' so what's the need for a seprate Paddleshifter !!

I think that must be an dedicated gear shifter near/behind the steering wheel for faster On-the move down/upshifts.

Whereas, Paddleshifters is the Automatics serve some additional seprate role.

[/quote']

 

No brother , there is no gear stick its just the paddle shift for which you have to engage clutch. Here is the pic of Atom V8. pic 1 shows clutch and pic 2 show that it only has paddle shift.