| Patent Number |
Title Of Patent |
Date Issued |
| 5727384 |
Engine management system |
March 17, 1998 |
| A management system of an engine having a hot operating system (a catalytic converter or fuel vaporiser) and a rapid heating system for the hot operating system includes a clock and means to operate the clock after the engine has stopped where the clock operates to issue a signal indicat |
| 5685144 |
Operation of an internal combustion engine |
November 11, 1997 |
| A method is described for operating an engine having an afterburner and a catalytic converter downstream of the afterburner. Sufficient excess fuel is introduced into the engine to produce in the exhaust gases fuel constituents including unburnt hydrocarbons, carbon monoxide and hydrogen |
| 5653202 |
Intake manifold system |
August 5, 1997 |
| An intake manifold system 10 is described for a multi-cylinder four stroke spark-ignition internal combustion engine 12. Each cylinder has at least one intake port 20, each intake port 20 being connected at one end to the combustion chamber by at least one intake valve 14 and at the othe |
| 5609021 |
Operation of an internal combustion engine |
March 11, 1997 |
| A method is described of operating an internal combustion engine burning a fuel containing carbon and hydrogen, to provide a flame in the exhaust system to heat a catalytic converter or burn off the soot in a particulate filter trap. The method involves reducing the intake throttle openi |
| 5524434 |
Internal combustion engine |
June 11, 1996 |
| An internal combustion engine 12 in which liquid fuel is introduced prior to the charge entering the combustion chambers is mounted in a vehicle having an air scoop 34 which acts as a source of ram air pressurised by the movement of the vehicle. The ram air is fed into the exhaust system |
| 5518092 |
Phase change mechanism |
May 21, 1996 |
| A phase change mechanism is described for varying the phase of an engine camshaft relative the engine crankshaft. The mechanism comprises a drive member to be connected to the camshaft drive, a driven member to be connected to the camshaft, a coupling element for transmitting torque from |
| 5465574 |
Catalytic converter |
November 14, 1995 |
| A catalytic converter comprises two catalytic matrices 10, 12, 14 mounted in a common housing and spaced from one another by an afterburner chamber 16. An igniter 22 is arranged in the afterburner chamber 16 near the first matrix 12 and a flame guard 18 is arranged upstream of and in clo |
| 5441023 |
Tuned engine manifold |
August 15, 1995 |
| The invention relates to an engine manifold having a plurality of branches connecting respective engine ports to ambient air. Each branch of the manifold is connected to pass through an acoustic coupling (10) formed by a chamber (12) of shallow depth having conjugate foci and defined by |
| 5425233 |
Operation of an internal combustion engine |
June 20, 1995 |
| A method is described for reducing the total emissions during cold starts from an engine burning a hydrocarbon fuel and having an afterburner arranged upstream of a catalytic converter. The method comprises the steps of:(i) adding an excess of fuel to the engine combustible charge and ad |
| 5379735 |
Tuned intake system |
January 10, 1995 |
| An intake system for an internal combustion engine has a plurality of intake tracts connected in use to extend from individual engine intake ports to a common plenum chamber and a common passage opening into the plenum chamber for supplying air to all the intake ports. The tracts are |
| 5357919 |
Hydrocarbon emission control |
October 25, 1994 |
| A four-stroke spark ignited internal combustion engine has a variable volume working chamber and an auxiliary chamber having a fixed volume which is smaller than the maximum volume of the working chamber, with the working chamber and the fixed chamber being communicated by a series of |
| 5297507 |
Internal combustion engine having variable event timing |
March 29, 1994 |
| An internal combustion engine has a crankshaft, a camshaft driven by the crankshaft through a drivewheel at half the crankshaft speed and at least one cam on the camshaft for actuating a spring-biased poppet valve. To achieve variable event timing, a lost motion coupling is arranged betw |
| 5180559 |
Emission control |
January 19, 1993 |
| A method of reducing the light-off time of a catalytic converter comprising exposing the matrix of the converter to an alternating magnetic field or to electromagnetic radiation having a frequency such that the washcoat and the catalyst particles supported by the matrix are heated to the |
| 5161493 |
Phase change mechanism |
November 10, 1992 |
| A phase change mechanism for a camshaft of an internal combustion engine comprises a drive member to be connected to the camshaft drive train, a driven member to be connected to the camshaft, a coupling element interposed between, and movable relative to, the drive and driven members, |
| 5128583 |
Spark plug insulator structure |
July 7, 1992 |
| A spark plug is disclosed having a metal body 18, a center electrode 16 and an insulator 14 surrounding the center electrode, the part of the insulator disposed within the combustion chamber being separated by an annular gap from the metal body of the spark plug. In order to reduce c |
| 5101776 |
Engine with variable compression ratio |
April 7, 1992 |
| An internal combustion engine is described in which each combustion chamber (10) in the engine has an associated auxiliary chamber (18), and in which, for low compression ratio operation, the auxiliary chamber (18) is constantly connected to the combustion chamber (10) and, for high |
| 5085177 |
Manifold tuning |
February 4, 1992 |
| The invention relates to a manifold system for an internal combustion engine comprising a shutter (22) serving as an externally controlled source of pressure waves disposed within a tract (10) and activated at a predetermined time preceding the closing of an associated engine valve ( |
| 5067459 |
Fuel timing control |
November 26, 1991 |
| The invention relates to a spark ignited engine in which charge stratification occurs within the combustion chamber and in which the burn quality of the charge is dependent upon the timing of the instant of introduction of the fuel into the charge. A sensor is provided to produce a s |
| 5066023 |
Ionization sensor |
November 19, 1991 |
| A cylinder head gasket is described which also serves as an electrode of an ionization sensor. The gasket (16) has an electrically conductive surface portion (16c) which is electrically insulated from the cylinder head (14) and from the engine block (12) so that it may serve as an electr |
| 5056478 |
Variable camshaft phasing mechanism |
October 15, 1991 |
| A variable camshaft phasing mechanism is described comprising concentric drive and driven members (12, 10) rotatable respectively with a drive pulley (12) and a camshaft (14). The members (10, 12) are coupled to one another by means of an eccentric cranking element (18) on one of the |
| 4934211 |
Crank mechanism |
June 19, 1990 |
| An engine crankshaft has a crankpin that is radially slidably mounted relative to the crankshaft axis so that its axis can follow other than a circular path centered on the cranking axis. The mechanism includes at least one main bearing section with a stationary eccentric bearing sur |
| 4616606 |
Internal combustion engine and cam drive mechanism therefor |
October 14, 1986 |
| An internal combustion engine has n member of cylinders, a piston in each cylinder connected to a crankshaft (2), each piston being in phase or out of phase with the others by A.degree. or a multiple thereof (A=720/n), cams for actuating inlet and exhaust valves to each cylinder, and a c |
| 4594972 |
Valve mechanism |
June 17, 1986 |
| The invention is concerned with a desmodromic valve operating mechanism, i.e. one in which the valve is mechanically closed instead of relying on the action of a spring. The valve operating mechanism comprises a cam 20 driven in synchronism with the engine crankshaft. A cam follower 18 i |
| 4577598 |
Internal combustion engine and cam drive mechanism therefor |
March 25, 1986 |
| An internal combustion engine has n member of cylinders, a piston in each cylinder connected to a crankshaft (2), each piston being in phase or out of phase with the others by A.degree. or a multiple thereof (A=720/n), cams for actuating inlet and exhaust valves to each cylinder, and a c |
| 4543918 |
Intake manifold for an internal combustion engine |
October 1, 1985 |
| The invention relates to an induction manifold for a fuel injected internal combustion engine which comprises a rigid plenum chamber, intake pipes extending from the plenum chamber to the individual engine cylinders, and extensions of the individual intake pipes disposed within the plenu |
| 4535740 |
Engine control system |
August 20, 1985 |
| The invention describes a control system in which open loops control the mixture strength and spark timing by means of look-up tables (14, 12) stored in a computer and a closed loop (16, 18, 20, 24) with much greater response time corrects the air fuel ratio to compensate for long term |
| 4535738 |
Engine control systems |
August 20, 1985 |
| The invention relates to a method of engine control, which comprises firing a weak spark through the spark gap, measuring the current through or voltage across the electrodes following the weak spark, analyzing the voltage or current to derive a prediction of the flame propagation speed |
| 4494508 |
Ignition system |
January 22, 1985 |
| The invention relates to an ignition system in which a parameter of the charge in a cylinder prior to ignition is measured in order to predict the burning characteristics of that charge and the timing of the spark for igniting that charge in the same cycle is varied in dependence upon th |
