Abstract
A measuring method has been developed that can measure the liquid fuel (= wall-wet) quantity in an intake port and a cylinder under transient states. This method uses a specified single-cylinder research engine with a rapid valve train shutdown system for maintaining the wall-wet condition after it occurs and a transient state engine speed control that uses a low-inertia dynamo. This paper clarified the ratio of injected fuel at the 1st cycle from cold start (intake port wall-wet: 64%, cylinder wall-wet: 24%, burned fuel: 12%), and the increasing transition of these wet quantities cycle by cycle.
