@datzburier, 10 posts back: Excellent posts, and I am so happy that you are enjoying this. I am so grateful to all of you for your heartfelt and sincere input, it means the world to me and will make a world of difference to the Pakistani Auto Industry. I am not going to settle for a "thook polish" approach, or an "average car". It needs to be the very best.
Now, about Europe and CNG. There are 1142 CNG refilling stations in Europe right now and they are increasing at the rate of 5-8 per month...Not bad, huh. Also, there is a great Microcar market there with 300,000 vehicle sales in 2005 and growing at a faster rate then any other market segment. I want a piece of that action for Pakistan.
@agha300, 5 posts back. I respectfully submit that diesels have less horspower than petrol engines for the same displacement. They are MUCH heavier (30%) than petrol engines and cost about 25% more to make.
Now they are more efficient than petrol by about 35%, but CNG is 60% more efficient than petrol, and 30% more efficient than diesel. The reason the Mehran VXR is low on power is EXACTLY why a dedicated CNG only engine must be designed and manufactured for this market...something no one has yet done in the world. When the engine is carefully designed for a specific CNG application it can be optimized in many areas for this specific fuel type, so excellent power can be achieved.
By the way, can someone describe how a CNG diesel conversion kit works?
Now, a diesel engine is best for heavy load applications. A car of Mehran size would be too heavy, even with a 800cc diesel. This is because to be strong enough for the high compression, the engine block would need to be made of cast iron. Aluminum is 1/3 the weight of iron. My engine concept is 1/3 less weight than aluminum by using magnesium.
In summary, for a 800 cc engine, a diesel might weigh 150 Kgs, aluminum petrol: 110 Kgs, and a magnesium CNG: 80 Kgs. Also the crankshaft in a diesel has to be much bigger and heavier to take the loads.
And BTW, neither the Chinese nor anybody else knows enough to make this possible, so thank you for your offer for Chinese diesel engines, but respectfully not needed.