Internal combustion engine body
AssigneeToyota Jidosha Kabushiki Kaisha
InventorYasuhiko SUGIURA
Life of this patent
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Abstract
An internal combustion engine body includes a cylinder block including a plurality of cylinders, a first water jacket, and a second water jacket, and a cylinder head including an in-head water jacket. The in-head water jacket includes an intake-side flow passage. The cylinder block and the cylinder head are provided such that a flow rate of coolant that directly flows into the intake-side flow passage after flowing into the first water jacket is higher than a flow rate of coolant directly flows into any region other than the intake-side flow passage after flowing into the first water jacket.
Claims20
An internal combustion engine body comprising:
- a cylinder block including a first water jacket and a second water jacket that are provided around a plurality of cylinders;
- and
- a cylinder head including an in-head water jacket, wherein
- the in-head water jacket includes an intake-side flow passage that communicates with the first water jacket and the second water jacket and that is provided around an intake port,
- at least part of the first water jacket is provided on intake sides of the plurality of the cylinders,
- at least part of the second water jacket is provided on exhaust sides of the plurality of the cylinders,
- the first water jacket has an inflow port into which coolant flows from an outside of the internal combustion engine body,
- the cylinder block and the cylinder head are provided such that a flow rate of the coolant that directly flows into the intake-side flow passage after flowing into the first water jacket is higher than a flow rate of the coolant directly flows into any region other than the intake-side flow passage after flowing into the first water jacket, and
- each of the intake sides is a side where the intake port is provided with respect to a plane containing axes of the plurality of the cylinders in a direction perpendicular to the plane, and each of the exhaust sides is a side where an exhaust port is provided with respect to the plane.
An internal combustion engine body comprising:
- a cylinder block including a first water jacket and a second water jacket that are provided around a plurality of cylinders;
- and
- a cylinder head including an in-head water jacket, wherein
- the in-head water jacket includes an intake-side flow passage that communicates with the first water jacket and the second water jacket and that is provided around an intake port,
- at least part of the first water jacket is provided on intake sides of the plurality of the cylinders,
- at least part of the second water jacket is provided on exhaust sides of the plurality of the cylinders,
- the first water jacket has an inflow port into which coolant flows from an outside of the internal combustion engine body,
- the cylinder block and the cylinder head are provided such that a total flow passage cross-sectional area of flow passages through which the coolant passes when the coolant flows out from the first water jacket to the intake-side flow passage is larger than a total flow passage cross-sectional area of flow passages through which the coolant passes when the coolant flows out from the first water jacket to any region other than the intake-side flow passage, and
- each of the intake sides is a side where the intake port is provided with respect to a plane containing axes of the plurality of the cylinders in a direction perpendicular to the plane, and each of the exhaust sides is a side where an exhaust port is provided with respect to the plane.
Dependencies are inferred from the claim text.