초록 ▼

In order to reduce engine output torque, a gasoline engine can omit the ration of fuel from a proportion of its cylinder cycles, employing a pattern of successive inhibition and enablement of its fuel rations. For a given output torque, different patterns of successive enablement and inhibition can

In order to reduce engine output torque, a gasoline engine can omit the ration of fuel from a proportion of its cylinder cycles, employing a pattern of successive inhibition and enablement of its fuel rations. For a given output torque, different patterns of successive enablement and inhibition can be selected to minimize transmission of vibration from the engine to its environment. Selection of the optimum pattern can be made automatically.

대표청구항 ▼

An improved vibration control for an internal combustion engine having one or more combustion chambers, each combustion chamber being partially bounded by its movable piston, the one or more pistons being mechanically coupled to a common power output shaft, the engine having means for executing a se

An improved vibration control for an internal combustion engine having one or more combustion chambers, each combustion chamber being partially bounded by its movable piston, the one or more pistons being mechanically coupled to a common power output shaft, the engine having means for executing a series of combustion chamber cycles, the engine having means for providing a ration of fuel in each of its combustion chamber cycles, first control means overriding the fuel providing means, which can enable or inhibit the fuel ration in a first repetitive pattern of successive enabled and inhibited combustion chamber cycles, the period of repetition containing D combustion chamber cycles, where D is an integer greater than one and smaller than a hundred, the number of enabled combustion chamber cycles within each period being N, the fraction of enabled cycles being the quotient of N divided by D, the improvement comprising: second control means overriding the fuel providing means, which can enable or inhibit the fuel ration in a second repetitive pattern of successive enabled and inhibited combustion chamber cycles, the second repetitive pattern being different from the first repetitive pattern, but having the same fraction of enabled cycles as the first repetitive pattern, vibration control means for switching from the first pattern to the second pattern and from the second pattern to the first pattern while the engine is running, in order to reduce transmission of mechanical vibration from the engine to its environment.