Abstract: Provided is a control apparatus for a fuel priority type internal combustion engine, including a means of directly or indirectly detecting a variation in air density, for correcting a maximum value of the desired fuel volume on a basis of a result of the detection so as to adjust the relationship between an accelerator opening degree and the desired fuel volume, or a shaft torque value and a desired fuel volume are determined in accordance with a fuel volume corresponding to an internal loss and a fuel volume corresponding to a maximum value of the desired fuel volume.

Abstract: It is an object of the present invention to provide a compression ignition internal combustion engine capable of making compatible an increase in compression self-ignition operating area with an optimum output torque control in the operating area and also smoothly switching between a self-ignition combustion and a spark ignition combustion. The compression ignition internal combustion engine operates by switching between the spark ignition combustion using an ignition device and the compression ignition combustion which self-ignites a mixture by piston compression. Variable valve mechanisms (15a, 15b) vary at least one of the valve timings and valve lifts of an intake valve and an exhaust valve. Intake air regulating means (7; 30; 32; 40, 42) vary the amount of air intake into a combustion chamber on the upstream side of a combustion chamber inlet of the compression ignition internal combustion engine.

Abstract: A control method of an engine including at least an HC adsorbing catalyst for adsorbing HC at a low temperature, and emitting adsorbed HC at a high temperature, and a three-way purifying function on the same carrier, and an NOx adsorbing catalyst having an NOx adsorbing function for adsorbing or occluding NOx in oxidizing atmosphere, and emitting NOx in reducing atmosphere, and a three-way purifying function. The engine operated with stoichiometric value or a rich air-fuel when a temperature of the HC adsorbing catalyst and/or a temperature of the NOx adsorbing catalyst is equal to/lower than a predetermined value. The engine is operated with a lean air-fuel ratio when a temperature of the HC adsorbing catalyst and/or a temperature of the NOx adsorbing catalyst is equal to/higher than the predetermined value.

Abstract: In a direct gasoline injection type spark igniting internal combustion engine provided with a turbocharger and a catalyst, in order to optimize an exhaust gas control, the structure is made such that an optimum exhaust gas control can be obtained only by one control valve by designing an arrangement of a pre catalyst, the turbocharger and a bypass exhaust gas passage and placing a control valve. Further, a stratified operation area is expanded by reducing a capacity of the turbocharger, shifting an actuation area to a low capacity side and corresponding to an area of a stratified combustion so as to increase an air amount in the stratified area. Accordingly, since it is possible to early warm up a main catalyst at a time of starting the engine, whereby the exhaust gas is purified, and the air amount in the stratified area is increased, the stratified area expands to a high output side and a fuel consumption is improved.

Abstract: A hybrid vehicle control apparatus which is capable of improving the deterioration of the emission performance unique to the hybrid vehicle during idle stop by purifying the exhaust gas remaining in the engine intake pipe, the cylinders, the exhaust pipe and the catalyst. The apparatus comprises two drive sources including an engine operated by fuel combustion and an electric motor/generator operated by electric energy. A residual exhaust gas purifier purifies the gas remaining in the intake pipe, the cylinders, the exhaust pipe and the catalyst of the engine.

Abstract: Disclosed is a control unit for an internal combustion engine which can activate the three way catalyst at the early stage and can lessen the deterioration of the exhaust in an internal combustion engine such as HC, CO, and NOx, etc. from the exhaust gas when starting. The control unit for an internal combustion engine is provided with three way catalyst and HC adsorbent on an exhaust side. The control unit alternately controls the A/F between a rich state and a lean state in order to quicken the activation of the three way catalyst when the internal combustion engine starts.

Abstract: An object of the present invention is to provide an engine exhaust gas cleaning system which can accurately judge whether or not there is the remaining capacity in an NOx trapping amount of an NOx trapping agent, can optimize the timing of NOx purge control, and can diagnose the deterioration of the NOx trapping agent.

Abstract: A diagnosis system for an engine including an exhaust pipe, a hydrocarbon (HC) absorbent arranged within the exhaust pipe, an upstream air/fuel ratio sensor arranged upstream of the HC absorbent and detecting a wide range air/fuel ratio of an exhaust gas, a downstream air/fuel ratio sensor arranged downstream of the HC absorbent and detecting rich or lean with respect to stoichiometric air/fuel ratio of the exhaust gas, and a control unit, the control unit includes means for correcting an air/fuel ratio upstream of the HC absorbent, means for correcting an air/fuel ratio downstream of the HC absorbent, and means for predicting a HC absorbing amount of the HC absorbent, the means for correcting the air/fuel ratio upstream of the HC absorbent correcting and controlling an output value of the upstream air/fuel ratio sensor toward lean, the means for predicting the HC absorbing amount of the HC absorbent predicting an absorbing performance of the HC absorbent on the basis of a difference between an output value o

Abstract: An engine control equipment capable of activating a catalyst and preventing exhaust gas from deteriorating in order to early perform combustion by compressive self-ignition.

Abstract: Provided is a control apparatus for a fuel priority type internal combustion engine, including a means of directly or indirectly detecting a variation in air density, for correcting a maximum value of the desired fuel volume on a basis of a result of the detection so as to adjust the relationship between an accelerator opening degree and the desired fuel volume, or a shaft torque value and a desired fuel volume are determined in accordance with a fuel volume corresponding to an internal loss and a fuel volume corresponding to a maximum value of the desired fuel volume.

Abstract: The present invention has its object to judge the establishment of conditions influencing on the evaluation of performance of a NOx catalyst, whereby when being established, the evaluation of performance of the NOx catalyst is stopped to thereby prevent the performance of the NOx catalyst from being erroneously judged.

Abstract: There is disclosed an apparatus in which changes of linear A/F sensor or engine response characteristics can be detected with high precision in a broad range during operation of an engine. The apparatus includes a controller 50 for controlling an air/fuel ratio of each cylinder of a multiple cylinder engine, and a linear A/F sensor 28 for emitting an output which is proportional to the air/fuel ratio of an exhaust tube assembly. The air/fuel ratio of a specific cylinder is changed by a predetermined amount, a vibration component amplitude or a frequency component based on an engine rotation number is extracted from a signal obtained from the linear A/F sensor 28, and the response characteristics of an air/fuel ratio detector or the engine are detected from the amplitude or a power of the frequency component.

Abstract: In a direct gasoline injection type spark igniting internal combustion engine provided with a turbocharger and a catalyst, in order to optimize an exhaust gas control, the structure is made such that an optimum exhaust gas control can be obtained only by one control valve by designing an arrangement of a pre catalyst, the turbocharger and a bypass exhaust gas passage and placing a control valve. Further, a stratified operation area is expanded by reducing a capacity of the turbocharger, shifting an actuation area to a low capacity side and corresponding to an area of a stratified combustion so as to increase an air amount in the stratified area. Accordingly, since it is possible to early warm up a main catalyst at a time of starting the engine, whereby the exhaust gas is purified, and the air amount in the stratified area is increased, the stratified area expands to a high output side and a fuel consumption is improved.

Abstract: A diagnosis system for an engine including an exhaust pipe, a hydrocarbon (HC) absorbent arranged within the exhaust pipe, an upstream air/fuel ratio sensor arranged upstream of the HC absorbent and detecting a wide range air/fuel ratio of an exhaust gas, a downstream air/fuel ratio sensor arranged downstream of the HC absorbent and detecting rich or lean with respect to stoichiometric air/fuel ratio of the exhaust gas, and a control unit, the control unit includes means for correcting an air/fuel ratio upstream of the HC absorbent, means for correcting an air/fuel ratio downstream of the HC absorbent, and means for predicting a HC absorbing amount of the HC absorbent, the means for correcting the air/fuel ratio upstream of the HC absorbent correcting and controlling an output value of the upstream air/fuel ratio sensor toward lean, the means for predicting the HC absorbing amount of the HC absorbent predicting an absorbing performance of the HC absorbent on the basis of a difference between an output value o

Abstract: A charge transfer device having a charge transfer portion in which a plurality of electrode pairs are formed above a transfer channel, with the plurality of electrode pairs commonly wired forming N (where N=2, 3, 4, . . . natural numbers) bits of the charge transfer portion bits so that electrode pairs of each half bit can be independently driven at every N bits, inputting the electrode pairs of each half bit with the same drive pulse to operate it by a two-phase complementary drive in a normal operation, and in an N-time speed operation, inputting the electrode pairs of N bits with N pairs of complementary drive pulses to operate them by a 2N-phase complementary drive.

Abstract: A hybrid vehicle control apparatus which is capable of improving the deterioration of the emission performance unique to the hybrid vehicle during idle stop by purifying the exhaust gas remaining in the engine intake pipe, the cylinders, the exhaust pipe and the catalyst. The apparatus comprises two drive sources including an engine operated by fuel combustion and an electric motor/generator operated by electric energy. A residual exhaust gas purifier purifies the gas remaining in the intake pipe, the cylinders, the exhaust pipe and the catalyst of the engine.

Abstract: The objective of this invention is to provide an information processing system capable of instantaneous memory access which can be suitable for use in any programming environment. The second objective of this invention is to provide a highly reliable information processing system in which the programs with access to the memory can be restricted in order to prevent accidental or unauthorized overwrites. The third objective of this invention is to provide a convenient information processing system which can maintain its reliability by using a program to vary the accessibility of different areas of the memory.

Abstract: A charge transfer device according to the present invention is one having a charge transfer portion in which a plurality of electrode pairs are formed above a transfer channel, and includes means for commonly wiring the plurality of electrode pairs forming N (N=2, 3, 4, . . . natural numbers) bits of the charge transfer portion bits so that electrode pairs of each half bit can be independently driven at every N bits, means for, in a normal operation, inputting the electrode pairs of each half bit with the same drive pulse to operate it by a two-phase complementary drive, and means for, in an N-time speed operation, inputting the electrode pairs of N bits with N pairs of complementary drive pulses to operate them by a 2N-phase complementary drive.

Abstract: An exhaust gas cleaning system for an engine capable of judging the amount of trapped NOx and the oxygen storage capacity of an NOx trap agent and which can diagnose the deterioration of the NOx trap agent. The NOx trap is arranged in an exhaust gas passage and the air-fuel ratio of the exhaust gas is temporally changed from a lean air-fuel ratio to the stoichiometric air-fuel ratio or a rich air-fuel ratio with a predetermined cycle. The NOx trapping occurs by absorbing or adsorbing NOx in the exhaust gas when an air-fuel ratio of the exhaust gas is a lean air-fuel ratio and by releasing or reducing NOx when the air-fuel ratio is a rich air-fuel ratio. The amount of trapped NOx is judged from the oxygen concentration and the oxygen concentration in the exhaust gas is detected in the exhaust gas passage in the downstream side of the NOx trap and determined by taking the oxygen storage capacity when the air-fuel ratio of the exhaust gas changes to the stoichiometric air-fuel ratio or the rich air-fuel ratio.

Abstract: The invention provides a method of controlling an air-fuel ratio and for diagnosing a deterioration of a catalyst having an NOx trapping agent in an internal combustion engine. An exhaust gas purifying apparatus having an NOx trapping agent arranged within an exhaust gas passage, an air-fuel ratio changing means temporarily changing the air-fuel ratio of the exhaust gas from the lean to the stoichiometric or rich air-fuel ratio at a predetermined cycle, a particular component detecting means detecting a particular component in the exhaust gas downstream the NOx trapping agent, a NOx discharge or reduction completion judging means, and NOx discharge or reduction completion time detecting means detecting a time required for purifying the NOx.