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JP3738478B2 |
To eliminate the necessity of a fuel injection valve having special functions such as a spray deflection type and the like, and simplify a structure. Two independent intake ports 3 are formed into such a shape as the mutual spacing of bo...
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JP3733845B2 |
To increase exhaust emission control effect by catalyst in stratified combustion operation when purifying exhaust gas by catalyst in an internal combustion engine. The exhaust gas generated by stratified combustion is separated into the ...
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JP2006500509A |
In a method for operating an internal combustion engine with direct fuel injection, in which air and a first fuel quantity are fed to a combustion chamber, in such a manner that a homogenous lean base mixture is formed in the combustion ...
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JP3732323B2 |
To reduce the emission of noxious components such as soot in an exhaust gas by forming mixture by a tumble flow from an intake pipe in a stratified charge combustion, by constituting in such a state as collecting the mixture in the adjac...
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JP2005351200A |
To provide a direct-injection spark-ignition internal combustion engine which is provided with a fuel-injection valve for carrying out homogeneous combustion and stratified combustion by injecting a fuel-spray nearly a sectional shape sp...
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JP3726435B2 |
To reduce fuel consumption and improve exhaust emission by forming an intake port into a form generating forward tumble in an intake air flow, and providing a sub-passage connected to the intake port and generating reverse tumble in the ...
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JP3726503B2 |
To optimize the fuel send path during stratified combustion and allow the gas stream in the cylinder to be changed variably. A swirl open/close valve 11 capable of creating a swirl within a combustion chamber 4 with the flow of intake ai...
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JP3721064B2 |
To improve a combustion by sealing a rich air/fuel mixture in a lean air/fuel mixture to simplify a structure and to reduce a cost by employing only a single fuel injector. Intake ports 11 and 12 and exhaust ports 14 and 15 are provided ...
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JP3722285B2 |
To provide an internal combustion engine capable of setting high the compression ratio and enhancing the fuel economy certainly even in the case the mean air-fuel ratio of the whole mixture gas in the cylinder hole is large and the mixtu...
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JP3721761B2 |
To avoid worsening of stratified charge lean-burning due to formation of valve recesses. An exhaust valve side inclined face 23 parallel to the inclined face of a pent roof type combustion chamber, and an intake valve side inclined face ...
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JP3719060B2 |
To accomplish a homogenious combustion in good performance by introducing such an arrangement that the fuel injected in a plurality of runs rides on the streams of suction gas having different inflowing direction and diffuses in the whol...
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JP2005320948A |
To increase an operating range by a premixed compression self-ignition combustion by a simple structure.After warmup operation is completed, a controller determines whether a requested load and a rotational speed are within a range where...
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JP3711941B2 |
To heighten effect of fuel consumption improvement by giving the effect of the fuel consumption improvement by lean combustion and effectively performing compression ignition in some of the cylinders. In a spark ignition type engine with...
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JP3711942B2 |
To secure exhaust purification performance by only using a three-way catalyst without using a lean NOx catalyst while giving fuel combustion improvement effect by lean combustion, and to improve fuel combustion even over a high load side...
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JP3711699B2 |
To improve air charging efficiency by making elliptical the cross-sectional shape of each intake port at least where an intake pipe is mounted and by disposing a fuel injection valve between the intake ports in an engine having two intak...
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JP2005299603A |
To change a spray angle according to operating conditions.This fuel injection valve 1 comprises, at the distal end part of an injection valve body 11, a main opening part 14 opened and closed by a needle valve 12. A disk-like second memb...
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JP3709653B2 |
To improve stratified charge combustion performance by providing an intake air heating means for heating intake air in an engine wherein a uniform combustion area with a fuel injection period set as an intake stroke and a stratified char...
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JP3709675B2 |
To increase an intake valve lift amount at a top dead center through a valve recess, and prevent degradation of lean stratified charge combustion due to formation of the valve recess. The protruding part 21 at the top face of a piston 4 ...
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JP2005282420A |
To provide a fuel injection valve increasing a contact area between air and fuel injected from an injection hole to further improve atomization of fuel.The fuel injection valve comprises: a valve body 12 having a valve seat 14 at inner p...
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JP2005264768A |
To provide an internal combustion engine enabling lean burn of a very high air/fuel ratio, while avoiding increase in cooling loss.A main combustion chamber 2 is demarcated by the lower face of a cylinder head 3 and a piston 5. A subsidi...
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JP2005256734A |
To provide an engine ideally materializing high output, low fuel consumption and clean exhaust gas.The engine 1 includes a secondary cylinder 20 including a secondary cylinder tube 21 communicating to a cylinder head 2 and a secondary pi...
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JP2005256778A |
To provide an engine capable of performing both operations to insufficiently mix EGR gas and fresh air and to sufficiently mix the two.The engine is provided with a combustion chamber 5; an air intake passage 7 and an exhaust passage 8 c...
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JP2005248803A |
To provide a fuel injection device for an internal combustion engine, capable of appropriately suppressing combustion deterioration due to low fuel pressure even when the fuel pressure is low in the internal combustion engine equipped wi...
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JP2005248857A |
To reduce adhesion of injected fuel on a cylinder inner wall and a piston crown surface causing deterioration of combustion performance and exhaust gas performance in cylinder direct injection spray guide combustion system using multi-ho...
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JP3695251B2 |
To improve the quality of stratified combustion by restricting the fuel spray of fuel injection valves about spark plug. The cylinder direct injection type spark-ignition engine includes a pent roof combustion chamber 2 recessed in a cyl...
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JP3695143B2 |
To stabilize stratified charge combustion and to improve exhaust emission by preventing the sticking of fuel to a piston crown face or the like. Intake air supplied from a sub-port during stratified charge combustion is heated to a high ...
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JP3695056B2 |
To perform good stratified mixture operation, by creating air-fuel ratio adequate to conditions near to an ignition plug when fuel injection amount is small and large. The cylinder direct fuel injection type spark ignition engine has a s...
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JP3695145B2 |
To improve the stability of stratified charge combustion and to prevent the fuel covering of an ignition plug. Since intake air (a) is introduced from the gas fluidizing strengthening means 11 of an intake port 3 toward roughly a middle ...
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JP2005240757A |
To make compensation of a torque drop during the specified combustion control even for varied fuel properties.Calculation is made for a modification factor kal for modifying the first torque correction coefficient Ka1 in accordance with ...
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JP2005240794A |
To provide a stratified scavenging 2-cycle engine capable of supplying air to a combustion chamber.The stratified scavenging 2-cycle engine is furnished with a cylinder block having bores each provided with one or more scavenging ports a...
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JP3692749B2 |
To combine stratified lean combustion and uniform combustion on a high level and suppress the generation of smoke at the time of stratified combustion and heavy carbonization of a spark plug. A bowl 12 of complete round shape from the ax...
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JP3693211B2 |
To shorten an injection period by accelerating atomization so as to improve fuel consumption by dividing timing of fuel injection from an injector by a control means according to the specified condition of an engine. A cylinder injection...
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JP3692747B2 |
To prevent a misfire and heavy carbonization by avoiding a spark plug getting wet due to the adhesion of liquid drops of large diameter with large piercing force reflected colliding a piston at the time of stratified combustion. A protru...
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JP3692860B2 |
To improve the effect of suppressing diffusions of fuel spray to the side where exhaust valves are located during idling and the like, and to improve the conservation of a forward tumble flow. A piston 2 has, in the crown center, a cavit...
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JP3690329B2 |
To provide a cylinder direct injection internal combustion engine of good fuel consumption using a low cost conventional three-way catalytic converter without NOx trap function. A cylinder is filled with burned gas to get deficient in ox...
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JP2005220823A |
To improve combustion stability when employing heavy fuel in a cylinder injection type engine.When employing heavy fuel in a high EGR range in which an external EGR quantity and a valve overlap quantity (an internal EGR quantity) are the...
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JP2005220768A |
To provide a combustion method for a cylinder direct injection engine to perform stable stratified combustion.A fuel injection valve 5 is used which increases fuel injection pressure to improve the atomization of fuel. Utilizing the high...
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JP3683681B2 |
To prevent the divided injection quantity from becoming below the minimum compensation quantity of a fuel injection valve when a two-stage injection (weak stratified combustion) is made including the suction stroke injection for homogene...
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JP2005214040A |
To reduce HC and activate a catalyst by increasing the temperature of exhaust gas by promoting after-burning when an engine is cold and reduce HC and improve fuel consumption after the engine is heated.When the engine is cold (before the...
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JP3680492B2 |
To attain prompt switching of a combustion condition by conducting fuel injection suited to uniform combustion from a cylinder where fuel infection quantity suited to the uniform combustion has been calculated by the time of fuel injecti...
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JP3680491B2 |
To attain stable combustibility and improve acceleration performance by setting the low limit of a targeted equivalent ratio in uniform combustion so as to be larger than a low limit in a steady state when a transient state suited to the...
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JP3681080B2 |
To set a fuel injection termination timing at a stratified combustion time in a wide range according to a fuel injection amount. A combustion chamber 14 is formed into a pent roof type, an injector 15 is vertically disposed at the top 12...
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JP3677947B2 |
To stabilize the combustibility when stratified combustion is switched to homogeneous combustion. After stratified combustion is judged to be switched to homogeneous combustion, the equivalence ratio is gradually switched from the map re...
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JP3677938B2 |
To excellently maintain a rotation speed at a constant value even when a combustion form is switched. At S7-S9, based on a stratified combustion form, an uniform combustion form, a target equivalence ratio, a target ignition timing, and ...
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JP3677954B2 |
To optimize a switching timing of a valve overlap corresponding to a combustion mode, and to prevent the deterioration in combustion, by varying a valve overlap amount switching timing corresponding to the combustion mode, between a case...
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JP2005201097A |
To realize spray according to respective combustion processes in a compressing stroke and an air intake stroke with a simple structure.The internal combustion engine comprises a fuel injection valve 7 for injecting fuel directly into a c...
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JP2005201188A |
To enhance homogeneity of air fuel mixture inside cylinders.This spark ignition internal combustion engine is constituted by arranging an ignition plug, two intake valves 12a, 12b, an injector 22 for cylinder injection and an injector 20...
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JP3671785B2 |
To solve the problem of the difficulty to ensure combustion stability at a low rotational speed and under low load like idling and to improve exhaust capability and fuel consumption in other areas, in a cylinder direct injection engine f...
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JP2005180247A |
To improve the combustibility of an in-cylinder direct injection type internal combustion engine.Intake air control valves 7a, 7b which can be opened or closed freely are provided on the upper and lower sides of an intake air passage. Du...
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JP2005171815A |
To improve ignitability in generating a gas flow in a combustion chamber.A side electrode 13b of an ignition plug 13 is disposed downstream in a swirl flow S of a center electrode 13a. A swirl flow control valve generates a swirl flow S ...
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