Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 23rd December 2008, 11:55   #1
BHPian
 
Join Date: Feb 2007
Location: delhi
Posts: 707
Thanked: 89 Times
Default How does TAP (Timing Advance Processor) work?

I own a baleno altura, cng fitted with lamda. Obviously the car struggles @ low rpm, it isn't fun to drive & i miss the petrol feel; the distance to be covered being so much that i cannot afford the luxury of petrol.
I've been reading a lot about TAP but have never exactly figured out what it does. Can please give me a detailed review/explanation. How much it costs?
Where from in south delhi? advantages/disadvantages?
I would be grateful
Additional info.
Car model-Baleno altura
cng-12/14kg(not sure) with lamda,
It's the kind where u accelerate to 4 rpm(ish) and cng switches on.
Engine malfunction light sometimes comes on around 70.
An advanced thankyou.This is a project i'm dying to undertake. Cheers
sukrit7 is offline   Reply With Quote
Old 23rd December 2008, 16:13   #2
BHPian
 
ask77's Avatar
 
Join Date: Nov 2008
Location: Agra
Posts: 143
Thanked: 2 Times
Default

Due to the fact that natural gas has different thermodynamic properties from petrol, the timing must be modified in order to adapt the engine to CNG fuel . CNG is slow burner and has a very high octane rating of 110 as compared to 87 of petrol. A timing advance processor induces the ecu into advancing the timing by altering the MAP sensor signal which is used by ECU to determine the spark timing . All this results in much better driveability of CNG cars fitted with TAP. In my opinion both Lambda and TAP are necessary for CNG cars .
ask77 is offline   Reply With Quote
Old 23rd December 2008, 16:58   #3
BHPian
 
Join Date: Feb 2007
Location: delhi
Posts: 707
Thanked: 89 Times
Default

thankyou. Any idea about the following.
Cost?
comparison with petrol performance ?
sukrit7 is offline   Reply With Quote
Old 23rd December 2008, 17:18   #4
BHPian
 
Join Date: Sep 2008
Location: Delhi
Posts: 48
Thanked: Once
Default

Quote:
Originally Posted by sukrit7 View Post
thankyou. Any idea about the following.
Cost?
comparison with petrol performance ?
In Delhi, it would cost around Rs. 2500.

My car (WagonR) has been installed with lambda and TAP since conversion - and the power /pickup is almost the same as in Petrol.
Khandelwal is offline   Reply With Quote
Old 23rd December 2008, 18:26   #5
BHPian
 
Join Date: Feb 2007
Location: delhi
Posts: 707
Thanked: 89 Times
Default

@Khandelwal- Thanku, where in delhi? Is your's a closed loop or an open loop system
How do you find out?
sukrit7 is offline   Reply With Quote
Old 23rd December 2008, 19:26   #6
BHPian
 
arpandiv's Avatar
 
Join Date: Aug 2007
Location: Mumbai
Posts: 428
Thanked: 27 Times
Default

just a passing thought but has anyone tried connecting a TAP to a normal (petrol ) car and seeing if there is any difference in performance?
arpandiv is offline   Reply With Quote
Old 23rd December 2008, 19:41   #7
BHPian
 
Join Date: Dec 2008
Location: Delhi
Posts: 269
Thanked: 9 Times
Default

Quote:
Originally Posted by arpandiv View Post
just a passing thought but has anyone tried connecting a TAP to a normal (Petrol) car and seeing if there is any difference in performance?
I doubt whether the same can be connected to a normal Petrol car. Its a kitted car's device.

As for the price / availability of TAP, the price varies from about Rs. 1K to Rs. 3K (Chinese / Italian). I suggest you opt for a decent one. As for availability, you can go to AA Transfuels at G T Road Industrial Area (near Nanak Piu Gurudwara). Its near Ashok Vihar in North Delhi. You can PM me for further details.

He is a very trusted fitter and my friend has got his three cars kitted from him. Delighted with the service experience and performance.
WanderNomad is offline   Reply With Quote
Old 23rd December 2008, 19:45   #8
BHPian
 
ask77's Avatar
 
Join Date: Nov 2008
Location: Agra
Posts: 143
Thanked: 2 Times
Default

Quote:
Originally Posted by sukrit7 View Post
@Khandelwal- Thanku, where in delhi? Is your's a closed loop or an open loop system
How do you find out?
Lambda means closed loop. without lambda it is open loop. lambda takes input from the oxygen sensor ( lambda ) and the throttle position sensor to regulate the quantity of gas going into the engine intake thereby controlling the emission of the car . It has to be fitted by an expert since it has to initially programmed and properly calibrated.
ask77 is offline   Reply With Quote
Old 23rd December 2008, 21:50   #9
BHPian
 
Join Date: Feb 2007
Location: delhi
Posts: 707
Thanked: 89 Times
Default

Thanku all for your prompt replies.
@WanderNomad- I will pm u for details, if required. Thankyou.
I'll get the best one, money isn't a problem.
Another question, this improves fuel efficiency or the other way.
sukrit7 is offline   Reply With Quote
Old 24th December 2008, 10:02   #10
BHPian
 
Join Date: Sep 2008
Location: Delhi
Posts: 48
Thanked: Once
Default

Quote:
Originally Posted by sukrit7 View Post
@Khandelwal- Thanku, where in delhi? Is your's a closed loop or an open loop system
How do you find out?
IMO, with Lambda, it becomes a closed loop.

Quote:
Originally Posted by WanderNomad View Post
I doubt whether the same can be connected to a normal Petrol car. Its a kitted car's device.

As for the price / availability of TAP, the price varies from about Rs. 1K to Rs. 3K (Chinese / Italian). I suggest you opt for a decent one. As for availability, you can go to AA Transfuels at G T Road Industrial Area (near Nanak Piu Gurudwara). Its near Ashok Vihar in North Delhi. You can PM me for further details.

He is a very trusted fitter and my friend has got his three cars kitted from him. Delighted with the service experience and performance.
Same here.
I have got my car converted from the same fitter. My vote goes out for him. Good experience and knowledge.

PM me for his number.

Quote:
Originally Posted by sukrit7
Another question, this improves fuel efficiency or the other way.
I have clocked more than 11K Km after CNG conversion.

My car's FE figures on CNG (per KG) are as below
Highways: ~22 KM (With AC) ~23 (w/o AC)
City: ~19KM (with/without AC)
Khandelwal is offline   Reply With Quote
Old 24th December 2008, 16:51   #11
BHPian
 
Join Date: Feb 2007
Location: delhi
Posts: 707
Thanked: 89 Times
Default

Thankyou khandelwal. Which car is this?
sukrit7 is offline   Reply With Quote
Old 24th December 2008, 17:11   #12
BHPian
 
Join Date: Sep 2008
Location: Delhi
Posts: 48
Thanked: Once
Default

Quote:
Originally Posted by sukrit7 View Post
Thankyou khandelwal. Which car is this?
Check my previous post - Its WagonR.


Quote:
Originally Posted by Khandelwal;
My car (WagonR) has been installed with lambda and TAP since conversion - and the power /pickup is almost the same as in Petrol.
Khandelwal is offline   Reply With Quote
Old 19th October 2010, 14:25   #13
Senior - BHPian
 
9thsphinx's Avatar
 
Join Date: Oct 2008
Location: Ahmedabad
Posts: 1,042
Thanked: 441 Times
Default

Does anyone in Mumbai/Delhi know where can I source Italian brand TAP's? Not the Chinese ones. Any help or contact details is highly appreciated.
9thsphinx is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yet another Skoda Laura 1.8 TSI on Team-BHP. EDIT: Now sold! robimahanta Test-Drives & Initial Ownership Reports 234 8th September 2017 17:53
Help Required in Using Bullet Std Fuel Tap with Lock navin_v8 Motorbikes 4 16th May 2010 07:18
R.E Machismo 350 Ignition Timing Advance drsamuelk Motorbikes 1 2nd April 2010 21:01
Advance EMI - How does it work? nvldvr Indian Car Loans & Insurance 12 1st October 2009 21:29
Rumoured 500HP Infiniti G37 twin-turbo on tap for 2010 rahul_intlad The International Automotive Scene 4 19th March 2007 00:26


All times are GMT +5.5. The time now is 07:32.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks