Methods and systems for cooling a radial engine in a ground-based portable electric power generating system. The engine includes a plurality of cylinders extending radially from a central hub supporting a crankshaft. Each cylinder has a coolant inlet port and a coolant outlet port. The cooling system includes an inlet coolant manifold interconnecting at least two of the coolant inlet ports. The inlet coolant manifold is disposed external to the central hub.

An internal combustion engine includes a crankcase for rotatably supporting a crankshaft about a crankshaft longitudinal axis. The crankcase comprises a crankcase water jacket, a cylinder head which is connected to the crankcase and comprises a cylinder head water jacket, and a coolant pump for supplying the crankcase water jacket and the cylinder head water jacket with a coolant volume flow. The crankcase water jacket and the cylinder head water jacket are fluidly connected to one another in series. The crankcase water jacket is suppliable with the coolant volume flow by the coolant pump via a crankcase inlet, and the crankcase water jacket is designed such that the coolant volume flow is directed via a crankcase outlet and is transferred in the direction of the cylinder head water jacket. The crankcase inlet and the crankcase outlet are axially spaced apart. The crankcase inlet is arranged on a first longitudinal side of the crankcase.

A cylinder liner for internal combustion engines has an outer roughened surface that has particularly good adherence properties. The surface has is covered with protrusions or spines of varying shapes and sizes, which are created by spraying the mold with a coating and then casting the cylinder liner in the mold. The spines are generally worm-shaped, with a length greater than a width, and a large spacing between the spines.

Disclosed is a cylinder liner having a high bonding strength to a cylinder block. Further disclosed is a method for producing the same. The cylinder liner uses a silicon-aluminum alloy as a material; a plurality of protrusions are formed on the external surface thereof; and the protrusions each contain a pillar section extending from the external surface, and a head section formed at the end of the pillar section.

A cylinder liner for internal combustion engines has an outer roughened surface that has particularly good adherence properties. The surface is covered with protrusions or spines of varying shapes and sizes, which are created by spraying the mold with a coating and then casting the cylinder liner in the mold. The spines are generally conical or needle-shaped, with the bases being larger than the tips. The spines have an aggregate cross-sectional surface area measured at 0.2 mm from a ground cylindrical surface that is between 50-90% of the total ground cylindrical surface area, and an aggregate cross-sectional surface area measured at 0.4 mm from the ground cylindrical surface that is between 20-45% of the total ground cylindrical surface area.

Vehicle assemblies, such as engine assemblies, including an integrated cylinder head and plurality of liners as well as a polymeric composite housing are provided. Methods of making such vehicle assemblies are also provided.

A cylinder liner for internal combustion engines has an outer roughened surface that has particularly good adherence properties. The surface has is covered with protrusions or spines of varying shapes and sizes, which are created by spraying the mold with a coating and then casting the cylinder liner in the mold. The spines are generally worm-shaped, with a length greater than a width, and a large spacing between the spines.

An assembly, a crankcase, a reciprocating internal combustion engine, and a method for producing a reciprocating internal combustion engine facilitates engine block cleaning after casting, enables current and future residual-soiling standards to be met, and provides a solution to the challenges facing current and future high-performance engines, in particular the load zones head plate and cylinder tube, as well as potential for local improvement to properties in the crankcase in the additional load zones, namely the screw connection connecting the cylinder head and the crankshaft bearing. The assembly includes at least two cylinders and a platelike deck plate connecting them of integral design, wherein the platelike deck plate has a clearance for each cylinder and wherein the assembly can be inserted into or placed upon a crankcase of a reciprocating internal combustion engine, in that at least one coolant guideway is arranged between the cylinders.

Methods and systems for cooling a radial engine in a ground-based portable electric power generating system. The engine includes a plurality of cylinders extending radially from a central hub supporting a crankshaft. Each cylinder has a coolant inlet port and a coolant outlet port. The cooling system includes an inlet coolant manifold interconnecting at least two of the coolant inlet ports. The inlet coolant manifold is disposed external to the central hub.

Vehicle assemblies, such as engine assemblies, including an integrated cylinder head and plurality of liners as well as a polymeric composite housing are provided. Methods of making such vehicle assemblies are also provided.