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WO/2001/000981A1 |
A combustion engine having an exhaust-gas-driven turbo compressor (6) is provided with a device (20) for recirculating exhaust gases to the engine, this device being connected to the exhaust system of the engine upstream of the turbo com...
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WO/2000/077371A1 |
Disclosed is a method for compensating deterioration or ageing of NO¿x? storage catalysts by specifically increasing the NO¿x? conversion rate in accordance with a specific excess consumption threshold value. According to extent of dam...
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WO/2000/071875A1 |
According to the inventive method for operating a four-stroke reciprocating internal combustion engine with alternating compression ignition and externally supplied ignition, fuel is injected directly, fresh gas is supplied and waste com...
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WO/2000/068554A1 |
An exhaust emission control device of an internal combustion engine, wherein an exhaust emission control valve (24) disposed in an exhaust pipe (22) of the internal combustion engine is approximately fully closed at the time of start and...
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WO/2000/053917A1 |
Supercharged internal combustion engine with two separate exhaust manifolds (2a, 2b) from individual cylinder groups and two separate inlet manifolds (3a, 3b) each leading to a respective cylinder group. An inlet conduit (9) from a super...
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WO/2000/047884A1 |
The invention concerns a elongation valve for controlling the flow rate of exhaust gases recycled in intake manifold (1) of the engine (1, 2, 3). The invention is characterised in that it consists in: calculating the air flow rate (Q¿0?...
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WO/2000/042305A1 |
An exhaust gas recirculation system for an internal combustion engine. The present invention includes a turbocharger (36), restrictor valve (32), and exhaust gas recirculation valve (34). The restrictor valve (32) is upstream of the turb...
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WO/2000/037787A1 |
The invention relates to a method for operating an NOx-storage catalyst. According to said method, lean operation is switched off and operation is resumed with $g(l) $m(F) 1.1 when the catalyst temperature is higher than the temperature ...
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WO/2000/029735A1 |
An internal combustion engine wherein a first type of combustion in which the EGR gas quantity in a combustion chamber (5) is greater than the EGR gas quantity at which the soot production rate is at peak, producing little soot, or a sec...
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WO/2000/028200A1 |
According to the inventive method, an internal combustion engine is operated in the stratified charge operation and a base value for the NOx crude emission is determined which depends on the amount of fuel (MFF) injected into the cylinde...
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WO/2000/028203A1 |
The invention is related to a method and a device for recirculation of a part of exhaust gases from an exhaust pipe (6, 9) of a diesel engine (1) to the inlet of the engine, the exhaust gases being diverted from the exhaust pipe (6, 9) a...
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WO/2000/026527A1 |
An exhaust emission recirculating system for supercharged diesel engine, comprising a main power diesel engine (11) with a turbocharger (13) and an auxiliary power engine (18) which is connected to the main power diesel engine and suppli...
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WO/2000/020744A1 |
The present invention is an apparatus for controlling exhaust gas recirculation in an internal combustion engine (12). The apparatus includes an exhaust gas recirculation controller that uses sensed engine operating parameters and the en...
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WO/2000/019072A1 |
An internal combustion engine has an intake tract, at least one cylinder, an exhaust gas tract, and inlet and outlet valves which are assigned to the cylinder. An exhaust gas pressure (p¿AG?) prevalent in the cylinder during the valve o...
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WO/2000/012884A1 |
The invention relates to an internal combustion engine (1) comprising first cylinders (2-6) and at least one second cylinder (7) and to a method for operating the internal combustion engine (1). The second cylinder (7) serves as a dispen...
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WO/2000/011343A1 |
A method of regulating gas pressure, in particular excessive pressure, in a dual fluid injection system for an internal combustion engine having delivery injector(s). In this method, gas pressure is determined and if it is above a desire...
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WO/2000/009881A1 |
An evaporated fuel processing device of an internal combustion engine, wherein fuel vapor sucked into a canister (22) is purged into a surge tank (13) through a purge control valve (28), a target value of a fuel vapor rate indicating a r...
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WO/2000/008319A1 |
The invention relates to an internal combustion engine comprising several cylinders arranged in two rows and two turbochargers driven each by the exhaust gases from the cylinders of one cylinder row. The inventive engine is provided with...
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WO/2000/003134A1 |
An internal combustion engine, wherein a fuel injection valve (6) and an ignition plug (7) are disposed in a combustion chamber (5), fuel is injected from the fuel injection valve (6) at the end of a compression stroke, the amount of soo...
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WO/2000/001930A2 |
An internal combustion engine has multiple combustion chambers each having intake and exhaust valves for controlling intake and exhaust flows into and from the combustion chamber, an induction system (202) to the intake valves, an exhaus...
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WO/1999/067511A1 |
A catalyst (22) suitable for reducing NO¿x? in an exhaust gas by using ammonia in the presence of an excessive oxygen is disposed in an exhaust passage (18, 21). A urea solution is supplied via a flow rate control valve (33) into the ex...
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WO/1999/060260A1 |
An arrangement for exhaust gas feedback (1) in a turbocharged combustion engine with an exhaust manifold (2), while a transfer line (5, 5', 15) for EGR gases is arranged between the exhaust manifold and the inlet side of the engine and h...
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WO/1999/058826A1 |
A calorimetric sensor system requires a vehicle's internal combustion engine (10) to cyclically operate between first and second conditions to repeatedly produce a varying exhaust gas composition which is consistent from cycle to cycle. ...
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WO/1999/042709A1 |
A method of operating an internal combustion engine (21) employs a selectively gas permeable membrane unit (10) to provide either oxygen or nitrogen enriched air to reduced NOx emissions, lean burn limit, increase power, and reduced cold...
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WO/1999/040298A1 |
An on-board catalytic monitoring system (10) uses an intrusive technique to cause the vehicle's engine (12) to cycle between first and second operating conditions. The first and second operating conditions are chosen such that different ...
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WO/1999/040312A1 |
The invention relates to a system for a combustion engine (1) comprising at least two cylinders (2a-2f), an inlet (3) for the provision of air, an outlet (9, 10) for the emission of exhaust gases, an additional pipe (17) for the recircul...
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WO/1999/035390A1 |
A device for EGR recirculation in a multi-cylinder turbocharged combustion engine (1) whereby a valve-controlled EGR line (4) runs between the engine's exhaust side (2) and inlet side (3) and a turbine unit (6, 7) is accommodated in a tu...
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WO/1999/034109A1 |
Internal combustion engine with a cylinder block (1) which is formed with an evacuation channel (9, 10) for each cylinder. The respective channels have an end which opens into the cylinder barrel (2) and which is so adapted to the piston...
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WO/1999/031374A1 |
An engine assembly which includes an exhaust gas recirculation mechanism includes an internal combustion engine (10) having an engine air inlet (12) and an engine exhaust outlet (14, 16). The engine assembly further includes a valve asse...
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WO/1999/031373A1 |
The invention relates to an arrangement for a combustion engine (1) comprising at least one cylinder (2), an intake (3, 4) for the supply of air, an exhaust outlet (9, 10) for discharging exhaust gases, a further line (15) for recirculat...
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WO/1999/028612A1 |
An engine assembly (10) includes a valve assembly (16) which selectively enables exhaust gas to be recirculated from an engine exhaust outlet (14) to an engine air inlet (12). The valve assembly (16) is positionable between a first valve...
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WO/1999/028611A1 |
An actuator assembly (90) that uses a fluctuating operational pressure generated by an injector oil pump (18) to actuate an EGR valve (87) is disclosed. The operational pressure is used to operate the actuator assembly (90) without being...
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WO1999001652A9 |
A system and method for controlling an exhaust gas recirculation system (10) on an electronically controlled, turbocharger (18) equipped internal combustion engine (12) having two or more actuating devices (84, 86). In the disclosed embo...
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WO/1999/018340A1 |
The present invention is a coaxial master piston (100) for use in providing hydraulic fluid to effectuate a compression release braking function (10), and hydraulic fluid to effectuate an exhaust gas recirculation (EGR) function (20). In...
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WO/1999/018335A1 |
In an internal combustion engine (20) braking system which may provide compression release braking and/or exhaust braking, methods and systems are disclosed of controlling the overlap between an exhaust gas recirculation (34) event and a...
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WO/1999/014476A1 |
The invention relates to a method and to a device for determining the gas intake in an internal combustion engine. The invention aims at determining precisely and reliably the gas intake in an internal combustion engine, and especially t...
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WO/1999/010644A1 |
The invention relates to a method for controlling exhaust gas recirculation in an internal combustion engine. Known methods provide for a control unit which generally controls the exhaust gas recirculation rate via a throttle and a stop ...
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WO/1999/010643A1 |
A conversion system for converting a spark ignition engine to operate on gaseous fuel is disclosed. The conversion system includes an electronic controller which operates on several novel principles to provide superior performance/respon...
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WO/1999/006683A1 |
The invention relates to a gasoline internal combustion spark ignition engine having a fuel fractioning system that separates the gasoline fuel by boiling point into at least two, preferably three, fractions. The different fuel fractions...
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WO/1999/000591A1 |
The invention relates to an internal combustion engine, specially for a motor vehicle. Said engine is fitted with an injection valve and directly injects fuel to a combustion chamber during a compression stage in a first operating mode o...
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WO/1998/045581A1 |
Exhaust gas recirculation and selective catalytic reduction with urea (20) or other NO�x?- reducing reagent are employed to enable good fuel economy and low emissions from diesel and lean-burn gasoline engines (14). EGR (32) is operate...
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WO/1998/044250A1 |
The invention relates to a device for determining the volume of air entering the cylinder of an internal combustion engine with a supercharger, according to values such as speed, air flow rate in the induction pipe, throttle valve contro...
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WO/1998/041746A1 |
A combustion engine has a line (20) for feeding exhaust gases back from the outlet system (3, 3') to the inlet system (2), a valve (17) in the line (20), an exhaust brake valve (50) in the outlet system to increase the pressure in the ou...
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WO/1998/035153A1 |
A supercharged combustion engine (1) is provided with a device for exhaust gas feedback, so-called EGR, between the engine's outlet (3, 3') and its inlet (2). The device incorporates an exhaust gas driven turbine (6) which drives a compr...
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WO/1998/034021A1 |
A method and apparatus for carrying out a variable timing exhaust gas recirculation is disclosed for use during both positive power and retarding operation of an internal combustion engine. Motion or energy is derived from an engine comp...
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WO/1998/031924A1 |
The invention concerns an engine comprising a cylinder head (1) in which a precombustion chamber (4) is superposed on a main combustion chamber (5). The precombustion chamber is equipped with two supplementary valves, an admission valve ...
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WO/1998/026169A1 |
An engine (1) is provided with fuel injection valves (11) for jetting a fuel to be supplied to cylinders No. 1 to No. 4, and an electrical control unit (ECU) (30) increases or decreases both a fuel injection amount and an amount of exhau...
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WO/1998/012428A1 |
The air supply system for an internal combustion engine, comprises an air intake (1), a branch conduit (6) connecting the air intake (1) to the exhaust canal (4), a flow metre (7) mounted in the air intake (1) upstream of the point where...
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WO/1998/010177A1 |
The exhaust fume purification of lean-driven internal combustion engines, in particular Diesel engines, is problematic as regards nitrogen oxide removal, since the exhaust fume has a high oxygen content, in particular when the internal c...
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WO/1997/044579A1 |
A spark ignition internal combustion engine is described comprising; an intake manifold (12); a main throttle (14) for regulating the intake of ambient air into the intake manifold; an EGR pipe (42) connected between a point in the intak...
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