Internal combustion engine
The internal combustion engine includes a cylinder block. The cylinder block includes a cylinder liner having an outer peripheral surface, an opposing wall opposed to the outer peripheral surface, a water jacket defined by the outer peripheral surface and the opposing wall, and a heater accommodated in the water jacket in contact with the outer peripheral surface.
1 . An internal combustion engine including a cylinder block, wherein the cylinder block includes:
a cylinder liner having an outer peripheral surface;
an opposing wall that opposes the outer peripheral surface;
a water jacket defined by the outer peripheral surface and the opposing wall; and
a heater housed in the water jacket in contact with the outer peripheral surface.
2 . The internal combustion engine according to claim 1 , comprising:
a piston accommodated in the cylinder liner; and
an injector that injects fuel, wherein:
an inner peripheral surface of the cylinder liner includes a fuel adhesion surface to which liquid fuel injected from the injector adheres; and
a contact surface as a portion of the outer peripheral surface in contact with the heater includes an opposite surface as a portion of the outer peripheral surface that is located on an opposite side of the fuel adhesion surface in a radial direction of the piston.
3 . The internal combustion engine according to claim 2 , wherein:
the injector is a direct injection injector that injects fuel into the cylinder liner; and
the fuel adhesion surface is a portion of the inner peripheral surface that is located closer to an injection port of the injector in a direction along an axis of the piston than a top surface of the piston located at a bottom dead center.
4 . The internal combustion engine according to claim 3 , wherein
when a line segment orthogonal to the axis of the piston and connecting the injection port of the injector and the axis is defined as an imaginary line segment, and a plane including the axis and orthogonal to the imaginary line segment is a first imaginary plane,
the fuel adhesion surface is a semi-cylindrical surface located on an opposite side of the injection port with reference to the axis, of two semi-cylindrical surfaces obtained by equally dividing the inner peripheral surface by the first imaginary plane.
5 . The internal combustion engine according to claim 4 , wherein
when a plane including the imaginary line segment and orthogonal to the first imaginary plane is defined as a second imaginary plane,
the contact surface includes an intersection line between the second imaginary plane and the opposite surface.