Cylinder head
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsSatoko TOFUKUJI, Atsunori KUMAGAI, Nobuki KAWAMOTO
Life of this patent
Estimating the term…
Abstract
A cylinder head that can efficiently cool air that flows in intake ports of respective cylinders without causing a difference among the cylinders. A cooling water channel is provided in peripheries of the intake ports in the cylinder head. The cooling water channel includes a plurality of water jackets that independently cover parts of respective wall surfaces of a plurality of intake ports. Further, the cooling water channel includes a main channel for cooling water supply that extends in a longitudinal direction of the cylinder head, on an upper part of a row of the intake ports, and the main channel and the respective water jackets are each connected via branch channels for cooling water supply.
Claims16
A cylinder head for multi-cylinder engine, comprising:
- a plurality of intake ports that are provided side by side in a longitudinal direction of the cylinder head;
- a plurality of intake port cooling water jackets that are independently provided at the respective plurality of intake ports, and cover at least parts of respective wall surfaces of the plurality of intake ports;
- a cooling water supplying main channel that is provided at an opposite side from a side of a cylinder block mating surface of the cylinder head with respect to a central trajectory surface including central trajectories of the plurality of intake ports, and extends in the longitudinal direction of the cylinder head;
- and
- a plurality of cooling water supplying branch channels that connect the cooling water supplying main channel and the respective plurality of intake port cooling water jackets.
Dependencies are inferred from the claim text.