Engine

An engine comprising an upstream interlocking portion (1) near a crank shaft (49), which is interlockingly connected through a timer (20) to a downstream interlocking portion (2), the timer (20) being provided with a temperature-sensing operation means (7), during a cold-starting while the temperature-sensing operation means (7) senses a temperature of a value less than a predetermined one, the downstream interlocking portion (2) being made to advance by an advancing operation of the timer (20) based on an operation that the temperature-sensing operation means (7) makes upon sensing the temperature, during a warm term of the engine while the temperature-sensing operation means (7) senses a temperature of a value not less than the predetermined one, the downstream interlocking portion (2) canceling its advancement by an advancement-cancellation operation of the timer (20) based on another operation that the temperature-sensing operation means (7) makes upon sensing the temperature, wherein

• an oil pump (57) for an engine oil (56) is communicated with an oil-supply port (58) and the engine oil (56) within the engine is supplied from the oil-supply port (58) to the timer (20), thereby enabling the engine oil (56) in liquid state to be brought into contact with the temperature-sensing operation means (7), and
• the timer (20) comprises the eccentric cam mechanism (4), the cam holder (59) and the cam driving plate (60) are arranged as they are superposed one on another, disk cams (25, 25, 27, 27) being attached to the cam holder (59), input pins (65, 65) being attached to the predetermined disk cams (25, 25), the cam driving plate (60) being provided with the guide holes (67, 67) into which the input pins (65, 65) are internally fitted, a pair of support portions (60b, 59b) projecting from an end surface (60a) of the cam driving plate (60) and from an end surface (59a) of the cam holder (59) exposed laterally of the cam driving plate (60), the temperature-sensing operation means (7) being arranged as exposed between the pair of support portions (60b, 59b), the cam driving plate (60) being rotated based on the deformation of the temperature-sensing operation means (7), the disk cams (25, 27) being driven through the guide holes (67, 67) and the input pins (65, 65), thereby enabling the timer (20) to perform the advancing operation and the advancement-cancellation operation.