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In the first 10 months of 2012, the sales volume of clean diesel vehicles in the United States increased by 25.6% year-on-year.
In October of this year, the sales volume of clean diesel vehicles in the United States increased by 21.2% compared with the same period of last year, and September increased by 44% compared with the same period of last year and increased by 28.1% in August. In 2012, hybrid vehicle sales in the US market increased by 67.8% compared to the same period last year, while vehicle sales increased by 13.8% year-on-year.
Allen Schaeffer, executive director of the Diesel Technology Forum, said: "In September this year, the sales of clean diesel vehicles rose 44% year-on-year, the biggest month of this year, and the year-to-date clean diesel vehicles Sales volume has increased by 25.6% year-on-year last year, which is twice the increase in sales volume of the entire automobile market in the United States this year."
The data shows that during the past 27 months, sales of clean diesel vehicles in the US have shown an increase during the past 26 months, and there have been double-digit increases for 23 months and a 20% increase for 20 months. This shows that the U.S. clean diesel vehicles are gradually becoming a market trend.
At present, there are 14 models of clean diesel cars and SUVs on the US market. If you count light commercial vehicles and trucks, there are a total of 31 clean diesel vehicles. Shafir said that in the next three years, this number will double.
Machinery for typical gearbox shell body parts, main processing plane and hole system, to ensure that the size of the hole in the process of machining precision and position accuracy, handle the relationship between hole and plane. Should follow the principle of surface before hole, namely first processing box on the datum plane, and then to datum plane positioning processing other plane, then processing hole system. Because of the planar area is large, with its positioning can ensure reliable positioning, clamping and firm, and therefore easy to guarantee machining precision holes. Secondly, cut off the casting surface uneven, create conditions to improve the machining precision of holes, facilitate and adjustment of the knife, is conducive to protect the cutting tool. Processing technology should also follow the principle of separate rough finish machining.