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.

A cylinder head for use with an internal combustion engine, the cylinder head including a body having a fire deck and defining a water jacket in fluid communication with a cooling system, a first runner defined by the body and open to the fire deck to at least partially form a first valve seat, a second runner defined by the body and open to the fire deck to at least partially form a second valve seat, and a channel defined by the in fluid communication with the water jacket and positioned between the first runner and the second runner. The channel, in turn, includes a first inlet through which a first flow enters the channel, a second inlet through which a second flow enters the channel, and where the first inlet and the second inlet are oriented such that the first flow and the second flow interact with one another to create a turbulent region within the channel.

An internal combustion engine is equipped with a water injector for cooling the internal combustion engine by a spray of atomized water into the intake track or combustion chamber prior to ignition. The atomized water spray may be in the intake manifold or directly in the cylinder. The water is injected at a volume of between a ratio of about 95% fuel to about 5% water and about 50% fuel and about 50% water. The temperature of the internal combustion engine is maintained at between about 95° C. and about 200° C. during operation.

An internal combustion engine is equipped with a water injector for cooling the internal combustion engine by a spray of atomized water into the intake track or combustion chamber prior to ignition. The atomized water spray may be in the intake manifold or directly in the cylinder. The water is injected at a volume of between a ratio of about 95% fuel to about 5% water and about 50% fuel and about 50% water. The temperature of the internal combustion engine is maintained at between about 95° C. and about 200° C. during operation.

A drive unit for a motor vehicle that includes an internal combustion engine, which has a combustion engine and an exhaust gas line, via which exhaust gas can be removed from the combustion engine. A cyclic process device is provided for converting the thermal energy of the exhaust gas into mechanical work in a thermodynamic cyclic process, wherein a working medium with respect to its direction of flow flows through a first heat exchange device, in which a heat transfer from the exhaust gas to the working medium takes place, then flows through an expansion device, in which an expansion of the working medium and thereby the generation of the mechanical work take place, and then flows through a second heat exchange device, in which a heat transfer from the working medium to a cooling medium takes place.

Provided is an engine cooling structure for an engine where the engine is cooled by a cooling fluid supplied from a radiator, and the cooling fluid discharged from the engine is cooled by the radiator. The cooling structure includes: an inlet hose having one end coupled to the engine, and having the other end coupled to the radiator, the inlet hose including two or more hose members, and a connecting pipe configured to connect the two or more hose members, to each other; and a clamp including a pipe-side connection portion connected to the connecting pipe, and an engine-side connection portion directly or indirectly connected to the engine. The clamp has a gap between the clamp and the connecting pipe, and the gap functions as a transmission suppressing portion which suppresses transmission of vibrations from the engine-side connection portion to the connecting pipe.

A coolant pump includes a conveying channel, a drive shaft, a coolant pump impeller arranged on the drive shaft, a control slide which controls a flow cross-section of an annular gap between an exit of the coolant pump impeller and the conveying channel, a side channel pump which includes a side channel pump impeller arranged on the drive shaft and a side channel having an inlet and an outlet where a pressure can be generated by the side channel pump impeller rotating, a pressure channel having a flow cross section which fluidically connects the outlet to a first pressure chamber of the control slide, a valve which closes the flow cross-section, a second pressure chamber arranged on a side of the control slide facing the coolant pump impeller, and a connection channel arranged from the side channel into the second pressure chamber between the inlet and the outlet.

The present invention relates to a viscometric properties improver capable of improving the fuel efficiency of an internal combustion engine, and an additive composition for a liquid coolant containing the viscometric properties improver. [1] A viscometric properties improver consisting of a compound (A) represented by the following formula (1) and a compound (B) represented by the following formula (2), and [2] an additive composition for a liquid coolant containing the same:
R.sup.1OR.sup.2O.sub.mSO.sub.3M  (1)
R.sup.3O—SO.sub.3M  (2) wherein R.sup.1 and R.sup.3 are the same as or different from each other and each represent a linear or branched alkyl group or alkenyl group having 12 or more and 24 or less carbon atoms; R.sup.2 represents an ethylene group or a propylene group; m represents an addition molar number of R.sup.2O of 1 or more and 15 or less; and M represents a cation or a hydrogen atom.

The present invention relates to a cooling system (1) of an internal-combustion engine. Cooling system (1) comprises a closed cooling loop and it includes a closed loop in a Rankine cycle allowing part of the coolant heat to be recovered. According to the invention, the cooling loop comprises two thermostats (6; 20) and evaporator (19) of the Rankine loop is arranged between the two thermostats (6; 20).

Systems, apparatus, and methods described herein can overcome some of the disadvantages associated with existing internal combustion engines. In particular, systems, apparatus, and methods described herein relate to improving the combustion process of internal combustion engines through insert technologies, engine modifications, control technologies, and/or other methodologies.