Abstract: An accumulator type fuel injection system adapted to prevent engine trouble by making a judgement that fuel injection rate switching change-over valves provided correspondingly to fuel injection nozzles in cylinders, a valve for controlling the pressure in a low-pressure accumulator or means for detecting fuel pressures in accumulators gets out of order, and carrying out when any of these parts break down a control operation of a limp-home mode in which a region of an operation of an engine is limited. To provide such an accumulator type fuel injection system, a control means 8 is formed so that, when a judgement that first control valves 5, a second control valve 34 or pressure sensors 3a, 4a for detecting the fuel pressures in the respective accumulators get out of order is given, the control means 8 sets a discharge pressure of a fuel pump 1 not higher than a permissible pressure in a second accumulator 4, and injects a fuel from fuel injection nozzles 9.

Abstract: A NOx catalyst for selectively reducing NOx in exhaust gas by adsorbing ammonia is provided at an exhaust system of an engine, ammonia or urea water is supplied to the NOx catalyst by reducing agent supplying means, a consumption amount of ammonia adsorbed to the NOx catalyst is derived by consumption amount deriving means based on an exhaust amount of NOx exhausted from the engine detected or estimated by NOx exhaust amount deriving means and an actual NOx cleaning rate by the NOx catalyst derived by actual NOx cleaning rate deriving means, an actual adsorption amount of ammonia adsorbed to the NOx catalyst is derived in accordance with an addition amount of ammonia and the consumption amount of ammonia by adsorption amount deriving means and the reducing agent supplying means is controlled by controlling means in accordance with the actual adsorption amount.

Abstract: An engine operation controller for a hybrid electric automobile is equipped at least with a motor and an engine. The engine operation controller is provided with a speed detection section for detecting the speed of the vehicle, a control section for controlling operation of the engine, and a decision section for deciding whether or not a stop of the vehicle is a stop at a stopping place. If it is detected by the speed detection section that the speed is less than a predetermined value, operation of the engine is prohibited by the control section. Furthermore, a delay section is provided for delaying removal of the operation prohibition of the engine when it is decided by the decision section that the stop of the vehicle is a stop at a stopping place.

Abstract: The present invention relates to an EGR control unit and EGR control method for controlling an EGR adjusting apparatus, and it is an object of the invention to calculate an EGR rate at a low cost and to control an operation of the EGR apparatus with high accuracy. The EGR control unit is made up of temperature detecting devices detect in-passage temperature at least two of an intake passage, an atmospheric air introduction passage located on the upstream side of the intake passage and communicated with the atmosphere and an EGR passage, an actual EGR rate calculating device for calculating a rate of an exhaust gas to an intake gas in an internal combustion engine on the basis of information on temperatures detected by the temperature detecting devices, and an EGR controller for controlling the EGR adjusting device through the use of the actual EGR rate calculated by the actual EGR rate calculating device.

Abstract: An ECU preliminarily obtains a target supercharging pressure determined based on an engine rotational speed and an engine load, and stores the target supercharging pressure value. The ECU commands a flow passage area changing unit to set an exhaust gas flow passage area to the maximum flow passage area or the minimum flow passage area, and judges the abnormality of a supercharger by comparing supercharging pressure detected by a supercharging pressure sensor and the stored target supercharging pressure.

Abstract: By setting a switching timing of switching means that connects either one of a high pressure fuel source and a low pressure fuel source to an injector earlier than a point of time when an injector finishes a high pressure fuel injection, leak fuel or return fuel is reduced and an engine load is reduced and therefore mileage is improved.

Abstract: An exhaust emission control system of an internal combustion engine capable of post injection is disclosed which provides control such that the injection timing in sub injection is set to a point earlier than the target injection timing when the sub injection is started, and the injection timing in the sub injection is then delayed to the target injection timing. This realizes the post injection under the optimum conditions and enables an efficient rise in the exhaust temperature while inhibiting deterioration of the drivability due to a rapid change in torque.

Abstract: A gearshift operation device for a tiltable cab over type truck comprises a shift lever placed at an instrument panel, and a select cable and a shift cable which connect an operation lever unit for the shift lever and a manual transmission. After coming out of a cab, the cables curve to pass close by a hinge pivot which supports the cab, and extend toward the manual transmission.

Abstract: An exhaust emission control system of an internal combustion engine is provided which controls the oxygen concentration of exhaust passing through the exhaust emission control device according to the flow rate of exhaust flowing through an exhaust passage when the exhaust emission control device is regenerated, so that the regeneration is completed within a short period of time while the filter is prevented from being damaged by melting during the regeneration. This improves the exhaust emission control performance and reliability of the filter.

Abstract: An optical axis adjusting device for a vehicle headlamp judges an inclined state of the vehicle on the basis of detection of an ultrasonic sensor of a vehicle, and performs an optical axis adjustment of a headlamp. In order to accurately judge the inclined state and to suitably adjust the optical axis of the headlamp, with respect to the detection by the ultrasonic sensor, a factor hindering its accurate detection is detected, and when it is judged that the ultrasonic sensor can not perform an accurate detection, the optical axis adjustment of the headlamp is suspended.