OIL RESERVOIR STRUCTURE OF FOUR-CYCLE ENGINE

• Main Authors: ONISHI YOJI, TOMOMORI HIROSHI
• Format: Patent
• Language: English
• Published: 25.05.1999
• Edition: 6
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CRANKCASE VENTILATING; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To sufficiently ensure an oil amount without increasing the depth of the oil reservoir and to prevent the occurrence of air bite during rapid acceleration. SOLUTION: An oil suction port 6 is opened in the vicinity of the bottom of an oil reservoir chamber 3, and a four-cycle engine for a vehicle sucks oil in the oil reservoir chamber 3 through the oil suction port 6. Oil different chambers 13 and 33 partitioned by partition walls 11 and 31 from the oil reservoir chamber 3 and having an upper end covered with ceiling walls 12 and 32 are formed in the front part or the rear part or both parts of the oil reservoir chamber 3. Small holes 20 and 40 for a flow of oil are formed in the lower end parts of the partition walls 11 and 31, and air holes 21 and 41 are formed in ceiling walls 12 and 32. Oil is also stored in the oil different chambers 13 and 33, and by communicating with the oil reservoir chamber 3 through the small holes 20 and 40, an oil amount is ensured and temporary oil movement during rapid acceleration or rapid decrease is prevented from occurring and air bite is prevented from occurring.