摘要:
A carbon-based combustion catalyst is obtained by performing a burning step of burning sodalite at a temperature of 600° C. or more. Alternatively, a carbon-based combustion catalyst is obtained by performing the following mixing step, drying step, and burning step. In the mixing step, aluminosilicate (sodalite), and an alkali metal source, and/or an alkaline earth metal source are mixed in water to obtain a liquid mixture. In the drying step, the liquid mixture is heated to evaporate the water thereby obtaining a solid. In the burning step, the solid is burned at a temperature of 600° C. or more. The thus-obtained catalyst can cause carbon-based material to be stably burned and removed at a low temperature for a long time.
摘要:
In a drive control system for a hybrid vehicle, the electric power generated by an alternator driven by an engine and the electric power regenerated by a motor-generator are stored in a battery. The battery discharges electric energy to drive the motor-generator. An ECU calculates fuel consumption of the engine and fuel consumption of the motor-generator, and determines a distribution of motive power between the engine and the motor-generator from the fuel consumptions. The ECU calculates fuel consumption contributing to the electric energy stored in the battery, and then calculates the fuel consumption of the motor-generator by reflecting the contributing fuel consumption in it.
摘要:
A base engine torque generated with an estimated intake air amount is estimated. An engine torque is corrected by correcting an ignition timing based on a difference between a required engine torque and the base engine torque. A torque correction amount is calculated based on a correction amount of the ignition timing. An actual engine torque is estimated based on the calculated torque correction amount and the base engine torque. A permitted component driving torque is a difference between the actual engine torque and the required vehicle driving torque. A component is controlled based on the permitted component driving torque.
摘要:
A generator control device controls a generator that is driven by an engine to charge a battery and supply electric power to electric loads. In the generator control device the following steps are carried out: calculating a required electric power; calculating a difference rate that is a difference in an amount of a hazardous gas component of engine exhaust gas between a first case in which the generator generates the required electric power and a second case in which the generator does not generate an electric power divided by the electric power and controlling the generator to generate the required electric power if the difference is equal to or smaller than a first reference value.
摘要:
An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The monitored response rates are used in determining whether the sensor is failing or not, in determining the air-fuel ratio of the mixture accurately, or in air-fuel ratio control of the engine.
摘要:
In step 400, microcomputer 12 calculates a temperature change amount ΔT1 of ignition coil FC caused by the heat generating from the ignition coil FC, based on a previous calculated temperature T(n−1) of ignition coil FC and an engine rotational speed. In step 410, the microcomputer 12 calculates a temperature change amount ΔT2 of ignition coil FC caused by the heat received from the engine, based on the previous calculated temperature T(n−1) of ignition coil FC and a cooling water temperature of the engine. In step 420, the microcomputer 12 calculates a temperature change amount ΔT3 of ignition coil FC caused by the heat released to the outside, based on the previous calculated temperature T(n−1) of ignition coil FC and an intake air temperature of the engine. Then, in step 430, the microcomputer 12 calculates a present ignition coil temperature T(n) based on these change amounts ΔT1, ΔT2, and ΔT3.
摘要:
An air-fuel ratio detected by an air-fuel ratio sensor is periodically varied by executing a PI control. During the PI control, a time period in which the detected air-fuel ratio passes through a predetermined rich-side range is defined as a rich-side time constant, and a time period in which the detected air fuel ratio passes through a predetermined lean-side range is defined as a lean-side time constant. A rich-side time delay represents a time period in which an air-fuel correction amount is increasingly corrected to exceed a rich-side threshold, and a lean-side time delay represents a time period in which the air-fuel correction amount is decreasingly corrected to exceed a lean-side threshold. These time constants and time delays are compared with a determining value to diagnose degradation of an air-fuel ratio sensor.
摘要:
An air-fuel ratio sensor monitor is provided which is designed to monitor reactive characteristics or response rates of an air-fuel ratio sensor when an air-fuel ratio of a mixture to an internal combustion engine is changing to a rich side and to a lean side. The monitored response rates are used in determining whether the sensor is failing or not, in determining the air-fuel ratio of the mixture accurately, or in air-fuel ratio control of the engine.
摘要:
When in controlling an air-fuel ratio by a feedback control, a target air-fuel ratio is changed between normal time and at rich control time, a difference between a change amount of the target air-fuel ratio and a change amount of an air-fuel ratio feedback correction coefficient is learned as a sensor error in the rich control. A final detected air-fuel ratio is calculated by correcting a detected air-fuel ratio of an air-fuel ratio sensor in rich control based on the sensor error. Alternatively, the target air-fuel ratio or the air-fuel ratio feedback correction coefficient in the rich control may be corrected based on the sensor error.
摘要:
A plurality of catalysts are installed in an exhaust pipe, air-fuel ratio sensors or oxygen sensors are installed upstream and downstream of each catalyst, and the air-fuel ratio of the exhaust gas is feedback controlled to a target air-fuel ratio based on the output of the air-fuel ratio sensor located upstream of the upstream catalyst. In this the exhaust gas is sufficiently purified with the upstream catalyst alone when the exhaust gas flow rate is small, the oxygen sensor located downstream of the upstream catalyst is used as the downstream sensor for setting a target air-fuel ratio. Furthermore, when the exhaust gas flow rate increases, the amount of exhaust gas components passing through without purification in the upstream catalyst is increased. Therefore, the downstream sensor used for setting the air-fuel ratio is switched to the oxygen sensor located downstream of the downstream catalyst.