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Old 5th January 2007, 11:14   #31
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Okay, I'll give No. 6 a shot, but dont think this is the correct answer
All the years mentioned are associated with a launch of one or more models from Maruti:

1986: New model 800
1993: Zen
1996: Gypsy King
1998: Zen Diesel
2000: Alto (?)
2002: Esteem Diesel
2004: Omni LPG (?)
2006: (??)

Cheers,
Ajit
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Old 5th January 2007, 12:38   #32
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Lightbulb Auto Quiz 4 (Tech Flavour)

Auto Quiz 3 was really exciting with Ajmat making the podium finish and ajitkommini was not far behind.

Answers to Quiz 3:

1. Where did Bajaj Eliminator meet Tata Indica for the first time?
2. What was the first car associated with GM, which was rolled out of a production unit in India?
3. Siddharth Shriram Group is associated with which automible company?
4. With which car would you associate "Great Escape" with?
5. Whose vision materialised into Maruti?
6. 1986, 1993, 1996, 1998, 2000, 2002, 2004,2006 with what do you corelate this sequence of years?

1: Auto Expo Delhi 1998
2: Hindustan Contessa (GM Vauxhall cast off)
3: Honda Siel
4: Mahindra Scorpio
5: Sanjay Gandhi
6: Auto Expo

Tried to bring a bit of techie flavour to this edition of Auto Quiz.

1.Short journeys affect fuel economy more in petrol cars why?

2. Why does a diesel car last longer?

3. Indica Xeta Petrol 1396 cc produces Maximum Torque of 122 Nm @ 2600 rpm where as Indica V2 Diesel 1405 cc produces a Maximum Torque of only 85 Nm @ 2500 rpm, about 30% less and indica V2 turbo gives 123 Nm @ 2500 rpm. Why the difference?

4. Diesel cars are immune to cold mornings which frequently affects petrol cars. Why?

5. Fiat group pioneered this technology which made diesel engines smooth, less noisy and immensely fuel efficient. What Technology?

All the best. Have fun!
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Old 5th January 2007, 12:54   #33
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Quote:
Originally Posted by ravradha View Post
Tried to bring a bit of techie flavour to this edition of Auto Quiz.

1.Short journeys affect fuel economy more in petrol cars why?

2. Why does a diesel car last longer?

3. Indica Xeta Petrol 1396 cc produces Maximum Torque of 122 Nm @ 2600 rpm where as Indica V2 Diesel 1405 cc produces a Maximum Torque of only 85 Nm @ 2500 rpm, about 30% less and indica V2 turbo gives 123 Nm @ 2500 rpm. Why the difference?

4. Diesel cars are immune to cold mornings which frequently affects petrol cars. Why?

5. Fiat group pioneered this technology which made diesel engines smooth, less noisy and immensely fuel efficient. What Technology?

All the best. Have fun!
1. Diesel cars have more low end torque, thats why
2. Last longer....? Not in all cases. However lower RPM engines last longer than higher RPM engines as a general rule. Nothing to do with petrol and diesel here. Infact due to higher compression ratio diesel engines require to be more reinforced, and due to high vibrations life is lesser
3.Turbocharger for the diesel. Rest it all depends on engine, and engine management systems. There are 1.2L engines producing 90bhp too, and 2L engines producing just 60bhp etc.,
4.Wrong Questions. Diesel cars require heaters(glow plugs) in case of IDI engines else they will NOT start. Diesel freezing point is around -7 degrees so in extreme cold temp you need to add antifreeze.
5. Common Rail : Again wrong question.
Common rail was developed in 1960(prototype)
then Denso corporation of Japan made the first commercial heavy duty common rail engine
Fiat then did R&D after which Bosch took over and made the system for Mass market.
So Fiat has a contribution, but are not inventers of Common Rail.

Looks like this tech quiz is inaccurate

Last edited by tsk1979 : 5th January 2007 at 13:09.
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Old 5th January 2007, 13:36   #34
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Quote:
Originally Posted by ravradha View Post
4. Diesel cars are immune to cold mornings which frequently affects petrol cars. Why?
I think you've got the question the other way round. Cold mornings have no effect on Petrol cars & they start on the first crank, whereas with diesels you've to warm the glow plugs first.
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Old 5th January 2007, 14:05   #35
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Quote:
1.Short journeys affect fuel economy more in petrol cars why?
Engine has not warmed up, fuel air mixture is richer, fuel is not a lubricant hence more wear until oil has fully circulated, warmed up and is effectives


Quote:
2. Why does a diesel car last longer?
Engines built to take higher compression ration hence more robust. Dieel is not only a fual but also a lubricant



Quote:
3. Indica Xeta Petrol 1396 cc produces Maximum Torque of 122 Nm @ 2600 rpm where as Indica V2 Diesel 1405 cc produces a Maximum Torque of only 85 Nm @ 2500 rpm, about 30% less and indica V2 turbo gives 123 Nm @ 2500 rpm. Why the difference?
Compression ratios are different - turbo is reduced to cope with higher pressures on full turbo spin

Quote:
4. Diesel cars are immune to cold mornings which frequently affects petrol cars. Why?
I think you mean dampness due to cold mornings- diesel uses compresion to ignite not spark which creates minor shorting

Quote:
5. Fiat group pioneered this technology which made diesel engines smooth, less noisy and immensely fuel efficient. What Technology?
JTD or CRD - common rail fuel injection
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Old 5th January 2007, 16:17   #36
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5.Common rail diesel engine that featured MultiJet technology

MultiJet uses electronic control to divide the main injection into several smaller ones to achieve quieter combustion, reduced emissions and increased performance.

This technology helped Fiat fetch the Best International Diesal engine of the year for 2005
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Old 5th January 2007, 17:58   #37
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Lightbulb Answers - Quiz 4

Every quiz post is a learning for me. This time its much richer! Thanks BHPians. As I have always maintained, this is an very knowledgeble group.

1.Short journeys affect fuel economy more in petrol cars why?

When a petrol engine is started from cold it needs loads of fuel to make it run properly. If you do short journeys all the time then you'll never get anywhere near the manufacturers stated fuel economy. Diesel cars are great for short journeys because their efficiency is almost as high cold as hot. I go with Ajmat.

2. Why does a diesel car last longer?

...because petrol destroys lubrication and diesel doesn't. Cold start-ups are a real killer for petrol engines 'cos of all that excess petrol floating about. I go with Ajmat. tsk1979 you have valid points too to support the contarary.

3. Indica Xeta Petrol 1396 cc produces Maximum Torque of 122 Nm @ 2600 rpm where as Indica V2 Diesel 1405 cc produces a Maximum Torque of only 85 Nm @ 2500 rpm, about 30% less and indica V2 turbo gives 123 Nm @ 2500 rpm. Why the difference?


Agree with tsk1979 when he says "....it all depends on engine, and engine management systems. There are 1.2L engines producing 90bhp too, and 2L engines producing just 60bhp etc.,.." What I meant was ceteris paribus, if what make a diesel engine deliver less torque than petrol.

The amount of power which an engine can produce is limited by how much fuel it can burn, and the amount of fuel it can burn is limited by the amount of oxygen in the cylinder. The amount of oxygen in the cylinder is limited by the amount of air in the cylinder. So, if more power is wanted then more air is needed, how do we achieve this? Well a large engine has more air, so can produce more power, or the air can be pressurized to pack more of the stuff in to the available space. This is what a turbocharger ( or a supercharger) does; it's simply an air compressor.


4. Diesel cars are immune to cold mornings which frequently affects petrol cars. Why?

There you go Ajmat. No spark plug, for Diesel because the air is so hot, and so compressed at the top of the compression stroke that when the fuel is injected it burns straight away. Hence diesels can be correctly termed as "compression ignition" engines. A petrol engine is a "spark ignition" engine. This means no breakers, coil or h.t. leads to go wrong. This makes diesels immune to cold and damp that can affect petrol engines. Practically what iraghava says might be right. tsk1979, you are right - for very cold conditions this is not true.

5. Fiat group pioneered this technology which made diesel engines smooth, less noisy and immensely fuel efficient. What Technology?

Fiat group did it first in passenger cars only. I stand corrected tsk1979.

"The common rail system prototype was developed in the late 1960s by Robert Huber of Switzerland. After that, Ganser of the Swiss Federal Institute of Technology developed the common rail technology further. In the mid-nineties, Dr. Shohei Itoh and Masahiko Miyaki, of the Denso Corporation, a Japanese automotive parts manufacturer, developed the Common Rail Fuel System for Heavy Duty Vehicles and finally turned into its first practical use on their ECD-U2 Common Rail system, which was mounted on the Hino Raising Ranger truck and sold for general use in 1995.

The modern common rail system was extensively prototyped in the 1990's, with collaboration between Magneti Marelli, Centro Ricerche Fiat and Elasis. After research and development by the Fiat Group, the design was acquired by the German company Robert Bosch GmbH for completion of development and making suitable for mass-production. In 1997 they extended its use for passenger cars. The first passenger car that used the common rail system was the 1997 model Alfa Romeo 156.

Have a peppy weekend!
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Old 5th January 2007, 18:17   #38
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Thanks raj_aryan4411 for the info on Fiat MJ tech.
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Old 25th January 2007, 16:27   #39
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Thumbs up Quiz 5 - Oops! Recall!

Quiz is back after a long gap. This time the topic of Quiz is 'Oops! Recall!' - on recent recalls by major international players.

1. Why Honda recalled 2006 Civic 2-door passenger vehicles?

2. 1.2 million vehicles were recalled for speed control deactivation switch may overheat last year. Which company? What Vehicles?

3. Chevrolet Silverado trucks equipped with an 8.1L V8 engine had a condition in the engine which could result in fire. What was the condition?

4. Audi A3 passenger vehicles were recalled in 2006 due to a major safety issue. What was it?

5. Last year, SUVs of GM failed to comply with the requirements of Federal Motor Vehicle Safety Standard No. 110, “Tire Selection and Rims." What was the specific condition?

Hope you'll enjoy
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Old 25th January 2007, 17:12   #40
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Quote:
Originally Posted by ravradha View Post
Quiz is back after a long gap. This time the topic of Quiz is 'Oops! Recall!' - on recent recalls by major international players.

1. Why Honda recalled 2006 Civic 2-door passenger vehicles?

2. 1.2 million vehicles were recalled for speed control deactivation switch may overheat last year. Which company? What Vehicles?

3. Chevrolet Silverado trucks equipped with an 8.1L V8 engine had a condition in the engine which could result in fire. What was the condition?

4. Audi A3 passenger vehicles were recalled in 2006 due to a major safety issue. What was it?

5. Last year, SUVs of GM failed to comply with the requirements of Federal Motor Vehicle Safety Standard No. 110, “Tire Selection and Rims." What was the specific condition?

Hope you'll enjoy
1. 2 door civic airbag malfunction. If infant or child is in front seat, airbag should be suppressed, but it was not. However in normal civic the problem was due to faulty accelerator pedals
2. Ford : F series, vans SUVs
3. Fuel leak
4. Side air bag problem on the Audi A3
5. 2006 Chevrolet Silverado was the vehicle. the problem was missing or incomplete tire rim designation on the label pasted at drivers side. Chevy mailed the correct labels with install instructions to the buyers
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Old 29th January 2007, 11:28   #41
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Default Answers - Quiz 5

Brilliant TSK1979!!

Answers:

1. Why Honda recalled 2006 Civic 2-door passenger vehicles?

The rear windshield or rear quarter glass panels do not properly adhere to the body of the car due to improper window opening preparation. The rear windshield or rear quarter glass panels may become loose, rattle or lift from the window opening or separate from the window while driving increasing the safety hazard to traffic.

2. 1.2 million vehicles were recalled for speed control deactivation switch may overheat last year. Which company? What Vehicles?

Ford is recalling 1.2 million MY 1994-2002 F-250, F-350, F-450 and F-550, MY 2000-2002 Excursions, MY 1994-1996 Econoline, and MY 1996-2002 E-450, MY 1998 Explorer and Mountaineer trucks equipped with speed control, gasoline or natural gas engines. The speed control deactivation switch may overheat. Overheating could result in smoke or burn and an underhood fire.

3. Chevrolet Silverado trucks equipped with an 8.1L V8 engine had a condition in which the engine condition which could result in fire. What was the condition?

Trucks with this engine have a condition in which the engine fuel rail pulse damper retainer clip may fracture resulting in inadequate retention of the damper. If the damper comes loose, a fuel leak may result. Fuel leakage, in the presence of an ignition source, could result in a fire.

4. Audi A3 passenger vehicles were recalled in 2006 due to a major safety issue. What was it?

During production of the air bag, either the left or the right side curtain air bag inflation module may leak. In the event of a crash, the air bag may not inflate as designed.

5. Last year, SUVs of GM failed to comply with the requirements of Federal Motor Vehicle Safety Standard No. 110, “Tire Selection and Rims." What was the specific condition?

These vehicles have an incomplete tire rim designation on the certification/tire label located on the driver's door edge. In addition, the label may also be missing the tire load rating on the label. Although this information is not required by the standard, if a tire of a lesser load rating is installed, the tire may not be able to sustain the loads encountered during use. If a customer replaces a wheel and only relies on the rim size designation that is indicated on the label, a wheel that is of a different rim contour designation may be installed. It may be difficult or impossible to mount the tire on a wheel with the wrong contour. If the tire is mounted on the wheel with the wrong contour, the wheel and tire may not perform as intended, which could increase the risk of a crash.
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Old 15th February 2008, 00:01   #42
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THis is a nice old thread.Could we have some more questions please!
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Old 15th February 2008, 04:39   #43
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A simple and easy question from me:

Which was the first car manufactured in India with a 5th gear ?
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Old 15th February 2008, 05:01   #44
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Maruti 1000 perhaps??
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Old 15th February 2008, 05:19   #45
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Or maybe the Standard 2000?
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