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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7721688 | Variable compression ratio internal combustion engine An internal combustion engine includes a variable compression ratio mechanism made up of a case-side bearing-forming portion, a block-side bearing-forming portion, and a shaft-shaped drive portion. The case-side bearing-forming portion is formed in an upper portion ... | 05/25/2010 |
| 7412958 | Internal combustion engine A piston-crank mechanism links crankpins of a crankshaft with piston pins of pistons by using a plurality of links. The piston-crank mechanism allows an upward inertia force produced near a top dead center of each piston to be smaller than a downward inertia force p... | 08/19/2008 |
| 7392795 | Internal combustion engine and combustion control method An internal combustion engine is provided that basically comprises a combustion chamber, an electric discharge unit and a controller. The combustion chamber receives a mixture of fuel and air that is caused to undergo compression self ignition. The electric discharg... | 07/01/2008 |
| 7377238 | Variable compression ratio device of internal combustion engine A variable compression ratio device of an internal combustion engine includes a piston inner part connected to a connecting rod and a piston outer part fitted on an outer periphery of the piston inner part. The piston outer part is only slidably in an axial directio... | 05/27/2008 |
| 7334548 | Piston joint A joint for positioning between first and second elements includes an outer member and an inner member. The first and second elements are arranged for linear motion along a common axis. The outer member is configured for movement relative to the first and second ele... | 02/26/2008 |
| 7334547 | Variable expansion-ratio engine A variable expansion-ratio engine includes an expansion-ratio adjuster configured to adjust an expansion ratio; a load detector configured to detect an engine load; and a controller configured to control the expansion-ratio adjuster. The controller controls the expa... | 02/26/2008 |
| 7318397 | High efficiency high power internal combustion engine operating in a high compression conversion exchange cycle A piston (10), a spring (15) operatively coupled to a piston, the spring being inside (21) or outside (41) the piston, and if the spring is inside the piston, the diameter of the spring is equal to 0.7 to 0.9, and if it is outside of the ... | 01/15/2008 |
| 7228824 | Internal combustion engine having variable compression ratio selection as a function of projected engine speed A method for operating an internal combustion engine. The method includes: providing a functional relationship between time rate of change in engine speed, and compression ratio switching engine speed limit; determining time rate of change in engine speed; determini... | 06/12/2007 |
| 7165517 | Control apparatus and method for internal combustion engine with variable compression ratio mechanism A control apparatus for an internal combustion engine includes a variable compression ratio mechanism capable of varying a compression ratio of the engine, a compression ratio setting section that sets a compression ratio to be attained by the variable compression r... | 01/23/2007 |
| 7152582 | Gasoline type identifying system and method for identifying gasoline type The types of gasolines having different distillation characteristics and various compositions are identified accurately and rapidly. A pulse voltage is applied for a predetermined time to a liquid type identifying sensor heater including a heater and an identifying ... | 12/26/2006 |
| 7146940 | Combustion engine Disclosed is a combustion engine. The engine includes a combustion chamber (40), which is delimited at one end by a head (41) and delimited at a second end by a piston (1). The piston is arranged on a connecting rod (3) via a piston pin (... | 12/12/2006 |
| 7059280 | Variable compression ratio system for internal combustion engine and method for controlling the system A variable compression ratio system for an internal combustion engine, including a variable compression ratio mechanism for continuously varying a compression ratio of the engine, the variable compression ratio mechanism including a control shaft rotatably moveable ... | 06/13/2006 |
| 7055469 | Combustion engine variable compression ratio apparatus and method An apparatus and method for varying a compression ratio of an engine having a block and a head mounted thereto. The apparatus and method includes a cylinder having a block portion and a head portion, a piston linearly movable in the block portion of the cylinder, a ... | 06/06/2006 |
| 7047917 | Variable compression ratio mechanism In a variable compression ratio mechanism that serves to change the compression ratio of an internal combustion engine by rotating camshafts so as to cause relative movement between a cylinder block and a crankcase, an oil film forming device forms oil films on the ... | 05/23/2006 |
| 7040263 | Piston engine assembly A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relative to the d... | 05/09/2006 |
| 7043349 | Method and system for inferring exhaust temperature of a variable compression ratio engine A method for operating a variable compression ratio internal combustion engine includes the steps of determining a compression ratio operating state of the engine and inferring an exhaust temperature for the engine based at least in part on the compression ratio ope... | 05/09/2006 |
| 7036468 | Internal combustion engine with variable compression ratio and compression ratio control method A variable compression ratio engine has a compression ratio varying mechanism, which moves a cylinder block relative to a lower case. The rotational driving force of a servo motor is transmitted to vertical sliding movements of the cylinder block by means of cam sha... | 05/02/2006 |
| 6915765 | Piston engine assembly A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relative to the d... | 07/12/2005 |
| 6857400 | Method for controlling the compression ratio of an internal combustion engine A method for controlling the compression ratio ε in a supercharged combustion engine. The latter is provided with a control device in which a maximum final compression temperature T2,max is ascertained, and, within the framework of a precontrol, an optim... | 02/22/2005 |
| 6691655 | Control system and method for an internal combustion engine A control system for an internal combustion engine is provided. The engine includes a compression ratio control mechanism and an ignition timing control system. The control system comprises an engine control for controlling the compression ratio control m... | 02/17/2004 |
| 6666177 | Method for operating an internal combustion engine comprising at least one working piston A method for operating an internal combustion engine with at least one working piston with a variable compression ratio, which can be changed as a function of an operating state of the internal combustion engine, the method including the steps of: detecti... | 12/23/2003 |
| 6516757 | Internal combustion engine with a supercharger and an improved piston crank mechanism A supercharged internal combustion engine is provided with a double-link type piston crank mechanism connecting between a piston and a crankshaft. The piston crank mechanism causes the piston to move at a speed which is smaller around a top dead center (T... | 02/11/2003 |
| 6446587 | Piston engine assembly A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relati... | 09/10/2002 |
| 6328012 | Cylinder head and valve configuration Disclosed is a valve and head assembly for use in a flat head style internal combustion engine. The valve has a cup portion above the face of the valve. The cup portion of the valve moves longitudinally in a sleeve or liner and a retainer plate retains th... | 12/11/2001 |
| 6125801 | Lean-burn variable compression ratio engine The efficiency of a spark-ignition internal-combustion engine having an adjustable fuel-to-air mixture ratio is improved significantly by reducing the fuel-to-air mixture ratio and increasing compression ratio. The increase in compression ratio and the re... | 10/03/2000 |
| 5803026 | Internal combustion engine An internal combustion engine has at least one pair of first and second cylinders (12, 14) with the first (12) cylinder having a larger swept volume than the second cylinder (14) and respective first and second pistons (16, 18) reciprocable in the cylinde... | 09/08/1998 |
| 5255637 | Internal combustion engine with adaptive control of compression ratio An internal combustion engine having variable intake valve timing to control the compression work performed by the piston, so as to avoid knocking operation while allowing maximum use of exhaust energy in the event that the engine is equipped with a turbo... | 10/26/1993 |
| 5195469 | Controlled variable compression ratio internal combustion engine An improved arrangement for controlling and adjusting the compression ratio of an internal combustion engine (10) during operation. A secondary cylinder (201) is formed in the engine cylinder head (102) and opens upon the combustion chamber (110) of the e... | 03/23/1993 |
| 5183013 | Two-cycle diesel engine A two-cycle diesel engine and means for operating it to improve the performance by increasing the compression ratio by the closing of a supplemental exhaust port under light loads and low speeds. In order to reduce combustion chamber temperature and reduc... | 02/02/1993 |
| 5113809 | Axial cylinder internal combustion engine having variable displacement An axial cylinder variable displacement internal combustion engine. In a first embodiment, variable displacement is provided by a cylindrical sleeve that axially receives the hollow drive shaft of the engine. Plural helical slots are formed in the sleeve.... | 05/19/1992 |
| 5083532 | Mechanism for variable compression ratio axial engines This invention relates to internal combustion engines in which the cylinders are arranged parallel to the main shaft and the reciprocating movements of the pistons are converted to rotation by means of a swashplate, and more particularly to means for auto... | 01/28/1992 |
| 5025757 | Reciprocating piston engine with a varying compression ratio A reciprocating piston internal combustion engine with a varying compression ratio comprises a block having at least one piston bore, a piston received in each bore, a head attached to the block and having a dome portion closing the top of each bore and d... | 06/25/1991 |
| 4876992 | Crankshaft phasing mechanism A variable compression ratio engine has a pair of crankshafts connected by a phase adjuster mechanism operative to change the phase angle between the crankshafts so as to vary the compression ratio of the engine. The phase adjuster mechanism includes two ... | 10/31/1989 |
| 4870929 | Multi-cylinder engine with uniform cylinder sensitivity to knocking Disclosed herein is an internal combustion engine comprising first and second cylinders and first and second cylinder head cavities respectively aligned and communicating with said first and second cylinders to respectively define compression ratios respe... | 10/03/1989 |
| 4489681 | Multiple piston expansion chamber engine A multiple piston expansion chamber internal combustion engine wherein the charge is ignited and combusted (or partially combusted) and partially expanded by one or more of the pistons and after partial expansion thereof additional pistons augment the exp... | 12/25/1984 |
| 4485768 | Scotch yoke engine with variable stroke and compression ratio A yoke type engine wherein the orbital path of the slider is alterable to effect piston stroke and compression ratio changes. A crank component has a crankpin which carries and positions the slider. A boss of the crank component is carried by a control sh... | 12/04/1984 |
| 4480611 | Internal combustion engine using several kinds of fuels, with electronically adjustable intake and exhaust valves and injection device The combustion engine using several kinds of fuels is provided with intake and exhaust valves and an injection device which may be electronically adjusted. It is comprised of at least one working cylinder (1, 1a) at the upper part of which is provided a f... | 11/06/1984 |
| 4449489 | Varying geometric compression ratio engine An automotive engine having an automatically adjusted geometric compression ratio, wherein the charge is compressed to maximum permissible values under all throttle settings. This is achieved by a cylindrical valve carrier, raised or lowered by a screw ja... | 05/22/1984 |
| 4419969 | Flexible cylinder-head internal combustion engine with cylinder compression adjustable for use with available fluid fuels In an internal combustion engine, two opposed pistons of equal radius are slidably mounted in a cylinder and respectively connected to cranks of unequal throws mounted for rotation at oppositely disposed cylinder ends in a common crankcase. The pistons ar... | 12/13/1983 |
| 4321904 | Internal combustion engine with auxiliary combustion chamber An internal combustion engine includes a power cylinder, a power piston reciprocating therein and an auxiliary piston reciprocating within an auxiliary cylinder. Passages connect the upper end of the auxiliary cylinder to a combustion chamber and a source... | 03/30/1982 |
