INJECTION OF HOPE FOR BIG CARS.

The Corporate Average Fuel Economy (CAFE) regulations, as the name implies, requires manufacturers to so ″mix″ their output of cars that the average fuel economy will reach a mandated level (e. g. , 27. 5 mpg for 1985), while all the cars also satisfy allowable standards for exhaust emission. The larger the engine, the more difficult becomes emission control. The Bendix Sequential Multi-Point Electronic Fuel Injection (SMEFI) address the larger-engine problem. Specifically, the SMEFI system can hold NOx emissions at . 31 gpm, HC at . 24 and CO at 2. 7. The 1981 statutory emission standards are . 4 NOx, . 41 HC and 3. 4 CO. These results are the average of three tests conducted on a 350 CID Cadillac Seville weighing 4,500 lbs. The fuel economy figures claimed by Bendix are 15. 2 mpg/city and 20. 8 mpg/highway. In simpler terms, Sequential Multi-Point EFI means that each cylinder has its own injector - hence the multi-point. The injectors operate in the same sequence as the firing order of the engine, meaning sequential. It is claimed that on a larger engine in a large car the benefits of SMEFI really stand out because it delivers the exact amount of fuel when and where it is needed. Details of the Bendix SMEFI are given. Bendix is careful to point out that it hasn't run a 50,000-mile endurance test with a fleet of cars.