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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7726268 | Six stroke internal combustion engine and method of operation An internal combustion engine includes an arrangement of cylinders each having a reciprocating piston operatively linked to a crankshaft. The cycle for each cylinder includes an intake stroke, a compression stroke, a power stroke, an exhaust stroke, and two free str... | 06/01/2010 |
| 7673596 | Six-cycle internal combustion engine Described is a six-cycle internal combustion engine. Four of the cycles are the standard “Otto” cycles, namely intake, compression, power and exhaust plus two additional cycles, a primary intake cycle and a transfer cycle. The two additional cycles act as a supe... | 03/09/2010 |
| 7624709 | Cao cycles of internal combustion engine with increased expansion ratio, constant-volume combustion, variable compression ratio, and cold start mechanism This invention provides an internal combustion engine that has a substantially increased expansion ratio, a variable compression ratio, and subsequently a significantly improved thermal efficiency. This improvement in thermal efficiency is attained without involving... | 12/01/2009 |
| 7426916 | Multi-stroke internal combustion engine for facilitation of auto-ignition operation A method of operating an engine having at least one cylinder including an intake valve and an exhaust valve, the method comprising of injecting a first amount of fuel into the cylinder; auto-igniting a first mixture of air and said first amount of fuel by compressin... | 09/23/2008 |
| 7418928 | Engine and method for operating an engine A method of operating an engine is provided. The engine may have a housing with one or more combustion chambers, including a first combustion chamber. The engine may also have a piston in fluid communication with the first combustion chamber. The method may include ... | 09/02/2008 |
| 7334549 | Multi-stroke cylinder operation in an internal combustion engine A method to control valves during multi-stroke cylinder operation. Valves are controlled to improve emissions and engine torque resolution. ... | 02/26/2008 |
| 7314028 | Control apparatus for internal combustion engine A control apparatus for an internal combustion engine for controlling the engine while compensating for a deviation of an intake air amount from the proper value, caused by the thermal expansion and contraction of a variable intake mechanism thereof, which makes it ... | 01/01/2008 |
| 7287502 | Air intake device for internal combustion engine An air intake apparatus for an internal combustion engine includes an air intake manifold that has a plurality of branch pipes that are connected to an internal combustion engine and has a collecting pipe to which a throttle body is connected, in which an air intake... | 10/30/2007 |
| 7258104 | Method and apparatus for controlling operation of dual mode HCCI engines An intake and exhaust system for a dual mode HCCI engine, which provides superior intake temperature control and homogeneity for engine operation in SI and HCCI modes, as well as during transition between SI and HCCI modes and vice-versa. The system includes adjuste... | 08/21/2007 |
| 7216640 | Engine control to compensate for fueling dynamics A method for calculating transient fuel wall wetting characteristics of an operating engine is described. The method accounts for cylinder valve deactivation of cylinders in the engine in calculating the dynamic fueling compensation. In one example, fuel vaporizatio... | 05/15/2007 |
| 7152559 | Valve and fueling strategy for operating a controlled auto-ignition four-stroke internal combustion engine Part load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through a valve control operative to establish low pressure conditions within the combustion chamber into which fuel ... | 12/26/2006 |
| 7143725 | Dual six-stroke self-cooling internal combustion engine The present invention provides a dual six-stroke self-cooling internal combustion engine which utilizes a turbo and a cooling cylinder to compress cool air onto the engine head and reduce the engine temperature. The present invention greatly reduces the size and the... | 12/05/2006 |
| 7131408 | Method and arrangement for controlling an internal combustion engine The invention is directed to a method and an arrangement for controlling an internal combustion engine (20) which achieve an optimal efficiency in different operating states. An opening time of an inlet valve (5) of a cylinder (1) of the engine ... | 11/07/2006 |
| 7124717 | Method and device for operating an internal combustion engine A method and a device for operating an internal combustion engine having a plurality of cylinders are described, each cylinder having at least one intake valve and one exhaust valve having fully variable valve control, a fuel feed to at least one first cylinder of t... | 10/24/2006 |
| 7111593 | Engine control to compensate for fueling dynamics A method for calculating transient fuel wall wetting characteristics of an operating engine is described. The method accounts for cylinder valve deactivation of cylinders in the engine in calculating the dynamic fueling compensation. In one example, fuel vaporizatio... | 09/26/2006 |
| 7089908 | Control device and control method for direct injection engine A combustion control device and a method for a direct injection engine are disclosed wherein, when the engine is operating in the partial load range, the valve opening/closing mode of an intake valve and/or an exhaust valve is controlled so that exhaust gases remain... | 08/15/2006 |
| 7080613 | Method for auto-ignition combustion control A method is disclosed for controlling the air-fuel ratio in a four-stroke gasoline direct-injection controlled auto-ignition combustion. The engine is operated with two sequential pairs of expansion and contraction strokes during two revolutions of the engine crank,... | 07/25/2006 |
| 7079935 | Valve control for an engine with electromechanically actuated valves A system and method to control engine valve timing of an internal combustion engine. Electromechanical valves are controlled to improve engine fuel economy. Further, the method can adjust valve operation to provide air-fuel charge motion and increase combustion stab... | 07/18/2006 |
| 7066121 | Cylinder and valve mode control for an engine with valves that may be deactivated A method to select cylinder and valve operational modes in an internal combustion engine with valves that may be deactivated. A simplified method to select cylinder and valve modes is presented. ... | 06/27/2006 |
| 7063062 | Valve selection for an engine operating in a multi-stroke cylinder mode A method to control valve patterns in a cylinder operating in a multi-stroke cylinder mode. Valves are controlled to improve drivability and emissions. ... | 06/20/2006 |
| 7059281 | Four stroke engine auto-ignition combustion A method of operating a four-stroke gasoline direct-injection controlled auto-ignition combustion engine includes opening both the intake and exhaust valves during terminal portions of the expansion strokes and initial portions of the contraction strokes, injecting ... | 06/13/2006 |
| 7055493 | Method for fuel injection in a combustion engine, and combustion engine A method and a device for fuel injection in a supercharged four-stroke combustion engine of piston-and-cylinder type with compression ignition (1), whereby a controlled fuel quantity is supplied to the combustion chamber (2) for each work cycle, a firs... | 06/06/2006 |
| 7051514 | System and method for reducing NOx emissions after fuel cut-off events A method of controlling exhaust emission oxides of nitrogen (NOx) from an internal combustion engine (ICE) includes the steps of determining when an engine speed is below a first predetermined level, and controlling an oxygen displacement valve (ODV) such that at le... | 05/30/2006 |
| 7031821 | Electromagnetic valve control in an internal combustion engine with an asymmetric exhaust system design A system and method to control engine valves of an internal combustion engine is shown. Electromechanical valves are controlled in a manner to reduce hydrocarbon emissions of an internal combustion engine. Further, the method can adjust valve operation to account fo... | 04/18/2006 |
| 7025022 | Exhaust valve and intake system A method for controlling a fluid quantity in an internal combustion engine is provided for an internal combustion engine having an engine shaft and an operation cycle that includes at least one intake phase, one proportioning phase, one combustion phase in a combust... | 04/11/2006 |
| 7021277 | Valve and fueling strategy for operating a controlled auto-ignition four-stroke internal combustion engine Part load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through load dependent valve controls and fueling strategies. Optimal fuel economy is achieved by employing negative ... | 04/04/2006 |
| 7013211 | Variable valve control apparatus for internal combustion engine and method thereof A requested volume flow ratio calculated based on a requested torque, an amount of two times a spit-back gas amount at the valve overlap time calculated based on a requested residual gas rate, and a spit-back gas amount of the time when an intake valve is closed are... | 03/14/2006 |
| 7004121 | Arrangement at a piston engine and method of controlling the pistons A piston engine in the form of a piston pump or a piston engine (motor) comprises two or more piston cylinders (14b, 14c), preferably positioned with the same angular distances of 180 degrees for two cylinders, 120 degrees for three cylin... | 02/28/2006 |
| 6968751 | Axial piston machines This invention relates to internal combustion engines with cylinders arranged parallel to the main shaft and where reciprocating movements of the pistons are converted to rotation by means of a Z-crank mechanism and motion converter, or conversely to systems such as... | 11/29/2005 |
| 6966309 | In-cylinder reburn method for emissions reduction A method applicable to lean-burn combustion engines uses excess air from previous engine cycles in a reburning process to provide exhaust gases characteristic of stoichiometric combustion. Stoichiometric combustion products are particularly useful for use by convent... | 11/22/2005 |
| 6923149 | Control device for spark-ignition engine A control device for a multicylinder spark-ignition engine includes a flow path switching unit for switching intake and exhaust flow paths between a two-cylinder interconnect configuration and an independent cylinder configuration and an air-fuel ratio control unit.... | 08/02/2005 |
| 6789513 | Bazmi's six-stroke engine with intake-exhaust valves The present invention relates to a six-stroke internal combustion engine with intake-exhaust valves. All valves in the combustion chamber are named intake-exhaust valves, because said valves function as both intake valves in an intake stroke and exhaust valves in an... | 09/14/2004 |
| 6758174 | Method of operating an internal combustion engine The invention relates to a method of operating an internal combustion engine with a six-stroke process involving the following sequence of events: 1st stroke (I): air intake into the combustion chamber, 2nd stroke (II): compressio... | 07/06/2004 |
| 6622690 | Direct injection type internal combustion engine and controlling method therefor A direct injection type internal combustion engine has an intake and exhaust mechanism for intaking and exhausting air for a predetermined period of time between a second half of a second expansion stroke and a first half of a first compression stroke fol... | 09/23/2003 |
| 6619241 | Internal combustion engine and method for operating an internal combustion engine An internal combustion engine and a method for operating the multi-stroke combustion engine is disclosed. The engine is provided with individual variably controlled inlet and outlet valves in each cylinder. Operation of the engine involves controlling the... | 09/16/2003 |
| 6571749 | Computer controlled six-stroke cycle internal combustion engine and its method of operation An internal combustion engine and its method of operation which is designed to operate on a six-stroke cycle and which may include at least one but preferably a plurality of piston and cylinder assemblies each of which are characterized by a cylinder havi... | 06/03/2003 |
| 6564758 | Method for operating an internal combustion engine with variable charge changing control times A method for operating an internal combustion engine with variable gas exchange control times and with variable control times for the inlet and outlet valves includes, in various operating modes, direct exhaust-gas recirculation by the retarded closing of... | 05/20/2003 |
| 6443108 | Multiple-stroke, spark-ignited engine A system and a method for operating an internal combustion engine at a six-stroke, eight-stroke, or greater number of strokes cycle is disclosed. The combustion of the fuel and air is accomplished in two combustion steps with at least one expansion and co... | 09/03/2002 |
| 6311651 | Computer controlled six stroke internal combustion engine and its method of operation An internal combustion engine and its method of operation which is designed to operate on a six-stroke cycle and which may include at least one but preferably a plurality of piston and cylinder assemblies each of which are characterized by a cylinder havi... | 11/06/2001 |
| 6286466 | Internal-combustion engine A piston internal-combustion engine has a control system for controlling the number of strokes of the combustion process taking place inside a combustion space. As a function of operating parameters, the control system controls the engine operating proces... | 09/11/2001 |
