| 摘要 |
PURPOSE:To make it possible to sensitively sense temperatures, by arranging a temperature sensing member such that the efficiency of heat transmission between a sleeve fitted in a cylinder block and the temperature sensing member is higher than that between the cylinder block around the temperature sensing member and the sleeve. CONSTITUTION:An internal-combustion engine is arranged such that a piston 20 is disposed reciprocatably in a sleeve 19 fitted in a cylinder block 15. Further, a starting fuel supply device 44 is disposed in a carburetor 40. In this arrangement a temperature sensing type control valve 60 serving as a temperature sensing member relating to the control of the starting fuel supply device 44 is attached to the outer surface of the sleeve 19 in a part which is exposed to the outside space by notching a part of the cylinder block 15 and which confronts a combustion chamber 22. This temperature sensing type control valve 60 is provided with a bimetal 69 which closes at a low temperature, and a bimetal 70 which closes at a high temperature, and is arranged such that vacuum in an intake-air pipe 39 may be transmitted to or isolated from a vacuum chamber in the starting fuel supply device 44. |
