Method of controlling engine
First Claim
1. A method of controlling an engine to suppress vibration of the engine, the engine having a crankshaft and a plurality of cylinders arranged in a row in a direction parallel to the crankshaft, the method comprising the step of controlling the condition of combustion in the cylinder adjacent to one end portion of the crankshaft to suppress bending strain of the crankshaft at said one end portion wherein the improvement comprises that vibration control conditions of controlling the conditions of combustion in the cylinders adjacent to respective end portions of the crankshaft are set on the basis of properties of vibration of the engine and resonant frequencies at the respective end portions of the crankshaft and the conditions of combustion in the respective cylinders are controlled on the basis of the vibration control conditions set for the respective cylinders.
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Accused Products
Abstract
An engine has a crankshaft and a plurality of cylinders arranged in a row in a direction parallel to the crankshaft. Combustion in the cylinder adjacent to each end portion of the crankshaft to suppress bending strain of the crankshaft at said one end portion. The vibration control conditions of controlling combustion in the cylinders adjacent to the respective end portions of the crankshaft are set on the basis of properties of vibration of the engine and resonant frequencies at the respective end portions of the crankshaft and the conditions of combustion in the respective cylinders are controlled on the basis of the vibration control conditions set for the respective cylinders.
12 Citations
6 Claims
- 1. A method of controlling an engine to suppress vibration of the engine, the engine having a crankshaft and a plurality of cylinders arranged in a row in a direction parallel to the crankshaft, the method comprising the step of controlling the condition of combustion in the cylinder adjacent to one end portion of the crankshaft to suppress bending strain of the crankshaft at said one end portion wherein the improvement comprises that vibration control conditions of controlling the conditions of combustion in the cylinders adjacent to respective end portions of the crankshaft are set on the basis of properties of vibration of the engine and resonant frequencies at the respective end portions of the crankshaft and the conditions of combustion in the respective cylinders are controlled on the basis of the vibration control conditions set for the respective cylinders.
Specification