Methods and systems are provided for an in-cylinder thermal energy recovery device that utilizes the Rankine Cycle to recover energy from exhaust gasses that may be used to produce additional work in the vehicle. In one example, a method may include outfitting the head area of each cylinder of an engine with a tube array comprising one or more tubes passing through the combustion chamber of the corresponding cylinder. Each tube array may receive an injection of working fluid that is based, in part, on the temperature of the tube array's corresponding cylinder, which may then be utilized to recover heat energy.

There is provided an engine water-cooling device that can increase warming-up efficiency of an engine. The engine water-cooling device includes a thermostat housing that houses a thermostat. The thermostat housing is mounted to a front wall of a cylinder head in one side portion in a width direction of the cylinder head. A cooling water pump is mounted to a front wall of a cylinder block in a central portion in a width direction of the cylinder block. A bypass passage includes an intra-head bypass passage in the cylinder head, and the intra-head bypass passage includes a width-direction passage portion extending from a position behind the thermostat housing to a position behind and above the cooling water pump.

A water-jacket structure of a cylinder head may include a plurality of intake side inlet passages installed at intake sides of the cylinder head, respectively, along a length direction of the cylinder head to introduce cooling water supplied from the water-jacket of a cylinder block into the water-jacket of the cylinder head, a combustion chamber cooling passage cooling a combustion chamber using the cooling water supplied from the intake side inlet passage, a plurality of exhaust side outlet passage disposed at exhaust sides of the cylinder head, respectively, along a the length direction of the cylinder head to discharge the cooling water passing through the combustion chamber cooling passage, and an exhaust side gallery communicating with the exhaust side outlet passage to gather the cooling water discharged from the exhaust side outlet passage.

A water-jacket structure of a cylinder head may include a plurality of intake side inlet passages installed at intake sides of the cylinder head, respectively, along a length direction of the cylinder head to introduce cooling water supplied from the water-jacket of a cylinder block into the water-jacket of the cylinder head, a combustion chamber cooling passage cooling a combustion chamber using the cooling water supplied from the intake side inlet passage, a plurality of exhaust side outlet passage disposed at exhaust sides of the cylinder head, respectively, along a the length direction of the cylinder head to discharge the cooling water passing through the combustion chamber cooling passage, and an exhaust side gallery communicating with the exhaust side outlet passage to gather the cooling water discharged from the exhaust side outlet passage.

Systems are provided for a piston cooling jet system for cooling a piston of a locomotive engine. In one example, a piston cooling jet system includes a feed body hydraulically coupled to an oil reservoir and a pair of piston cooling tubes extending radially outwards, in opposite directions, from the feed body. The tubes may have showerhead outlet features at one end for uniformly spraying oil onto inlets of a piston oil gallery housed in the piston.

Systems are provided for a piston cooling jet system for cooling a piston of a locomotive engine. In one example, a piston cooling jet system includes a feed body hydraulically coupled to an oil reservoir and a pair of piston cooling tubes extending radially outwards, in opposite directions, from the feed body. The tubes may have showerhead outlet features at one end for uniformly spraying oil onto inlets of a piston oil gallery housed in the piston.

High temperature (HT) and low temperature (LT) cooling water, the LT cooling water being at a lower temperature than the HT cooling water, circulate in HT and LT cooling water flows in respective channels. A controller controls to set the temperature of the LT cooling water lower in a case where an operating point of an engine lies in a particular region in an operational region of the engine, the particular region including a region in which the load is high and the engine speed is low, than in a case where the operating point lies in an operational region other than the particular region. Furthermore, the controller narrows the particular region in a direction toward higher loads in a case where the temperature of the HT cooling water is lower than a predetermined temperature.

High temperature (HT) and low temperature (LT) cooling water, the LT cooling water being at a lower temperature than the HT cooling water, circulate in HT and LT cooling water flows in respective channels. A controller controls to set the temperature of the LT cooling water lower in a case where an operating point of an engine lies in a particular region in an operational region of the engine, the particular region including a region in which the load is high and the engine speed is low, than in a case where the operating point lies in an operational region other than the particular region. Furthermore, the controller narrows the particular region in a direction toward higher loads in a case where the temperature of the HT cooling water is lower than a predetermined temperature.

A device wherein rolling motion is obtained by energy obtained as a result of combustion of solid, liquid or gas fuel oil. The device has an elliptic disc installed onto a symmetric ball on a ball shaft in a body. A fuel oil injector inlet channel and ignition bobbin inlet channels are provided in the body. A rolling wall is installed onto the body and an exhaust outlet pipe. The rolling wall separates a symmetric body chamber into a suction chamber and combustion chamber. In one cycle rolling of elliptic disk, fuel-oil taken into the suction chamber is transferred to combustion chamber. Fuel oil taking and fuel-oil compressing and explosion thereof by ignition is conducted simultaneously and continuously and not interrupted.

A device wherein rolling motion is obtained by energy obtained as a result of combustion of solid, liquid or gas fuel oil. The device has an elliptic disc installed onto a symmetric ball on a ball shaft in a body. A fuel oil injector inlet channel and ignition bobbin inlet channels are provided in the body. A rolling wall is installed onto the body and an exhaust outlet pipe. The rolling wall separates a symmetric body chamber into a suction chamber and combustion chamber. In one cycle rolling of elliptic disk, fuel-oil taken into the suction chamber is transferred to combustion chamber. Fuel oil taking and fuel-oil compressing and explosion thereof by ignition is conducted simultaneously and continuously and not interrupted.