When Tesla’s first Model S hit streets two years ago it swept up headlines for out-dragging horsepower monsters way above its weight class, including the BMW M5 and Dodge Viper. Since releasing the all-wheel-drive version earlier this fall, the car has added notches for Audi and Ferrari to its wrap sheet of wins — but how do they fair against each other?
Monthly Archives: January 2015
Shenzhen to issue only 100K new license plates per year in effort to combat congestion and pollution
On 30 December, the city government of Shenzhen, China announced that it will only issue 100,000 license plates per year via lotteries and auctions, with immediate effect, to fight congestion and pollution.
Tsinghua team uses optical diagnostics to analyze source of sporadic super-knock in advanced SI engines
Knock is one of several different well-known abnormal combustion processes in spark-ignition engines; most of these abnormal combustion issues have been addressed with improved design or control schemes as well as fuel specifications. However, emerging advanced SI engines—e.g., those with turbocharging and direct injection—can exhibit a new phenomenon: super-knock, or violent engine knock.
