| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123520200 | Simultaneous compression, distinct pistons, restricted communication to a single combustion chamber | 6 |
| 20090159022 | Differential Speed Reciprocating Piston Internal Combustion Engine - The invention discloses a differential speed reciprocating internal combustion engine. It consists of one or more cylinders, a pair of pistons in each cylinder, and a crank connecting rod mechanism for each piston. The piston pair consists of a power piston and an auxiliary piston that are positioned oppositely in the same cylinder. The pistons keep a differential angle of 35°-75° CA and make differential speed movement under the control of a coordination mechanism. Since combustion takes place at a position close to the middle of the travel of the power piston, the crank connecting rod mechanism has a large lever arm coefficient when it is under the maximum combustion pressure. Thus the combustion thermal energy can be more efficiently utilized. | 06-25-2009 |
| 20100212613 | Multi-Cylinder opposed piston engines - Integrated, multi-cylinder opposed engine constructions include a unitary support structure to which cylinder liners are removeably mounted and sealed and on which crankshafts are rotatably supported. The unitary support structure includes cooling manifolds that provide liquid coolant to the cylinder liners. Exhaust and intake manifolds attached to the support structure to serve respective ports in the cylinder liner. The engine constructions may also include certain improvements in the construction of cooled pistons with flexible skirts, and in the construction of cylinders with sealing structures mounted outside of exhaust and inlet ports to control lubricant in the cylindrical interstice between the through bore and the pistons. | 08-26-2010 |
| 123520300 | Four-stroke cycle | 2 |
| 20080236521 | Internal Combustion Engine - An internal combustion engine is charged by a compressor such that for example only a fraction of the charge is supercharged for an operating cycle of the internal combustion engine and is supplied via a separate charging channel with the help of a short-stroke valve which is controlled by the camshaft after closure of the inlet of the internal combustion engine such that the suction/charging stroke of the four-stroke process is maintained entirely or partially. | 10-02-2008 |
| 123520400 | Multiple crankshafts | 1 |
| 20090107426 | DUAL CRANKSHAFT ENGINE WITH COUNTER ROTATING INERTIAL MASSES - A dual crankshaft internal combustion engine is symmetrically constructed to form a perfectly balanced engine assembly. A first crankshaft, having a first end, a second end, and being formed of a shape and with a torsional flexibility, is housed within a cylinder block and connected to a first series of cooperating pistons and cylinders. A second crankshaft, having a first end and a second end, is formed of substantially the same shape as the first crankshaft and has substantially the same torsional flexibility as the first crankshaft. The second crankshaft is also housed within the cylinder block and connected to a second series of cooperating pistons and cylinders, while being positioned parallel to the first crankshaft, with the first end of the first crankshaft being positioned adjacent to the second end of the second crankshaft. | 04-30-2009 |
| 123520500 | Two-stroke cycle | 2 |
| 20090159023 | INTERNAL COMBUSTION ENGINE TWIN POWER UNIT HAVING AN OSCILLATING CYLINDER - An invention is provided for an internal combustion engine twin power unit. The invention includes a crossover passage fluidly connecting a first cylinder to a second cylinder such that an air-fuel mixture introduced in the first cylinder is transferred to the second cylinder via the crossover passage, and wherein an ignition in any cylinder causes combustion of the air-fuel mixture in both cylinders via the crossover passage. Also included is a rod assembly, which is connected to the first piston and the second piston which are disposed in the cylinders. The rod assembly rigidly fixes the first piston and the second piston in a fixed spatial relation to each other. In addition, an intake port is included that is in fluid communication with both the first cylinder and the second cylinder. To control air passage within the intake port, a one-way valve is included. In this manner, air drawn into the first cylinder and the second cylinder via the intake port below the first piston and the second piston is prevented from escaping either cylinder via the intake port during downward motion of the first piston and the second piston. In addition, air compressed below the pistons during downward motion of the pistons escapes into the first cylinder above the first piston via the intake charge passage when the first piston clears an area of the intake charge passage, purging combustion exhaust gases from both cylinders. | 06-25-2009 |
| 20160160745 | SPLIT-CYCLE ENGINES WITH DIRECT INJECTION - In some embodiments, split-cycle engines are disclosed that are capable of operating in a normal firing mode in which a firing stroke is performed in the expansion cylinder only on every other rotation of the crankshaft. Fuel can be injected directly into the expansion cylinder during the non-firing rotation of the crankshaft over a period of time greater than what is possible with traditional split-cycle engines. A number of other advantages are associated with such engines. In some embodiments, two expansion cylinders can be provided such that a firing stroke is performed on every rotation of the crankshaft, even though each individual expansion cylinder only performs a firing stroke on every other rotation of the crankshaft. Air hybridized and/or Millerized variations of these engines, as well as various cylinder arrangements, are also disclosed herein. | 06-09-2016 |
