Cylinder head of engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakeshi Miura, Kunihiko Sakata
Life of this patent
Estimating the term…
Abstract
A cylinder head includes a pair of intake ports and a pair of exhaust ports disposed to face each other and disposed to surround a fuel injection valve, a first coolant path through which coolant flows from a position between the intake ports toward the fuel injection valve, a second coolant path through which coolant flows from a position between the exhaust ports toward the fuel injection valve, and a junction. The junction includes a facing wall that extends from a top surface of the junction toward the combustion chamber disposed on a lower side of the top surface and that faces a flow of coolant in at least one of the first and second coolant paths.
Claims8
A cylinder head comprising:
- a pair of intake ports and a pair of exhaust ports opened toward a combustion chamber for each of cylinders in an engine, the intake ports and the exhaust ports being disposed to face each other and the intake ports and the exhaust ports being disposed to surround a fuel injection valve;
- a first coolant path through which coolant flows from a position between the intake ports toward the fuel injection valve, the first coolant path being branched into first branch portions to surround the fuel injection valve;
- a second coolant path through which coolant flows from a position between the exhaust ports toward the fuel injection valve, the second coolant path being branched into second branch portions to surround the fuel injection valve;
- and
- a junction in which a first downstream side portion of each of the first branch portions of the first coolant path and a second downstream side portion of a corresponding one of the second branch portions of the second coolant path join each other, the junction including a facing wall that extends from a top surface of the junction toward the combustion chamber disposed on a lower side of the top surface of the junction, the facing wall facing a flow of coolant in at least one of the first branch portion of the first coolant path and the second branch portion of the second coolant path so as to guide the flow of coolant to reach a bottom surface of the junction.
Dependencies are inferred from the claim text.