Cold Start Injector: Description and Operation

The cold start valve operates on the electromagnetic principle. The valve injects fuel into the intake manifold independently of the injector operation so the engine can be cranked smoothly during cold weather. To improve fuel/air mixing at lower temperatures, the cold start valve incorporates a swirl type nozzle which has a turn chamber at the end. With this construction, fuel is injected at an angle of 90° and better atomization of fuel can be obtained.