摘要:
A water jacket coolant passage division member includes: a partition member that has a planar shape that conforms to a groove-like coolant passage provided to a cylinder block that is provided to an internal combustion engine; an inner-side rubber member that is provided to an inner side of the partition member, and comes in contact with a cylinder bore-side wall surface of the groove-like coolant passage; and an outer-side rubber member that is provided to an outer side of the partition member, and comes in contact with an outer wall surface of the groove-like coolant passage. An internal combustion engine in which a cylinder bore wall has a uniform temperature can be provided by utilizing the water jacket coolant passage division member.
摘要:
A cylinder head includes a plurality of exhaust ports provided corresponding to a plurality of cylinders, and configured to converge outlets of the exhaust ports inside the cylinder head, at least one of the exhaust ports not being provided with a water jacket there above, and a pair of oil passages arranged so as to sandwich the at least one of the exhaust ports above which the water jacket is not provided. An inclined surface provided on an upper surface of the cylinder head and positioned between the pair of oil passages, the inclined surface being inclined from one oil passage, of the pair of oil passages, toward the other oil passage.
摘要:
When the passing of coolant in an internal combustion engine (1) is restricted to accelerate the warm-up of the internal combustion engine (1) and the coolant in this engine (1) is undergoing nucleate boiling, the restriction of the passing of the coolant in the internal engine (1) is maintained. Specifically, the restriction of the passing of the coolant in the internal combustion engine (1) is maintained during nucleate boiling from the beginning of nucleate boiling of the coolant in the internal combustion engine (1) until the maintenance period has elapsed. Thus, the warm-up of the internal combustion engine (1) is effectively accelerated by restricting the passing of the coolant in the engine (1). Furthermore, the restriction of the passing of the coolant in the internal combustion engine (1) is canceled when the maintenance period has elapsed. Thus, low-temperature coolant flows in the internal combustion engine (1) and the internal combustion engine (1) is cooled by this coolant, so nucleate boiling of the coolant in the engine (1) is suppressed.
摘要:
The disclosed internal combustion engine (1) has an electric water pump (56) and a water temperature sensor (92) that detects coolant water temperature (THW). An electronic control device (91) stops the driving of the water pump (56) when the coolant water temperature (THW) is lower than a baseline temperature (THW). Meanwhile, the electronic control device (91) drives the water pump (56) in accordance with the coolant water temperature (THW) when the coolant water temperature (THW) is higher than the baseline temperature (THW). When the driving of the water pump (56) is stopped, the internal combustion engine (1) forbids at least one engine control until the water pump (56) is driven.