Patent application number | Description | Published |
20110011373 | FUEL SUPPLY DEVICE - An inexpensive fuel supply device having a high output is achieved using low-output fuel pumps. | 01-20-2011 |
20140060485 | INTAKE CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - An intake control system for an internal combustion engine, which, even when there are a plurality of intake air amounts for attaining one target torque, is capable of positively selecting a minimum intake air amount therefrom without causing hunting, and setting the minimum intake air amount as a target intake air amount, thereby making it possible to improve fuel economy. The intake control system calculates a maximum intake air amount, sets a plurality of provisional intake air amounts within a range of 0 to the maximum intake air amount, calculates torques estimated to be output from the engine with respect to the provisional intake air amounts, respectively, selects a minimum provisional intake air amount that makes the estimated torque equal to or close to the target torque from the relationship between the provisional intake air amounts and the estimated torques, and sets the same as the target intake air amount. | 03-06-2014 |
20140067212 | CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - A control system for an internal combustion engine, which is capable of quickly and properly ensuring excellent fuel economy of the engine even when atmospheric pressure has changed. The control system includes an ECU. The ECU performs weighted average calculation on lowland map values and highland map values, based on atmospheric pressure, to thereby calculate map values of a demanded torque that minimize a fuel consumption ratio of the engine in the atmospheric pressure, and calculates engine demanded output. The ECU calculates demanded torque and demanded engine speed using the map values and the engine demanded output, respectively. The ECU controls the engine using the demanded torque. | 03-06-2014 |
20140088851 | CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - A control system for an internal combustion engine, which is capable of directly and properly calculating the most fuel-efficient torque according to operating conditions of the engine without setting or learning in advance operating lines indicative of the most fuel-efficient torques, thereby making it possible to reduce costs and enhance fuel economy. In the control system, when the engine is operated at a predetermined reference rotational speed, a plurality of fuel consumption ratio parameters associated with a plurality of estimated torques are calculated based on a provisional intake air amount-estimated torque relationship which is the relationship between provisional intake air amounts and estimated torques to be obtained when the provisional intake air amounts of intake air are supplied. Further, an estimated torque associated with a minimum value of the fuel consumption ratio parameters is calculated as the most fuel-efficient torque at the reference rotational speed. | 03-27-2014 |
20140261312 | INTAKE CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - An intake control system for an internal combustion engine is capable of ensuring a differential pressure across an EGR valve, and controlling an EGR amount with high accuracy. A target fresh air amount is set based on a demanded torque calculated according to operating conditions of the engine. A differential pressure across an EGR valve is set as a target differential pressure. When it is determined that the across-valve differential pressure is not in a state in which the target differential pressure can be ensured, an opening degree of the EGR valve is controlled to limit an EGR amount. An opening degree of a throttle valve is controlled based on the target fresh air amount, so as to ensure the target differential pressure. | 09-18-2014 |
20150198120 | VALVE REFERENCE POSITION-LEARNING DEVICE FOR INTERNAL COMBUSTION ENGINE - A valve reference position-learning device for an internal combustion engine, which is capable of accurately learning the reference position of a valve both before and after the warm-up of the engine, while properly reflecting thereon a deviation of the reference position caused by the thermal elongation of the valve and drive system after the warm-up of the engine. The valve reference position-learning device calculates and updates a learned value of the reference position of the wastegate valve both at and after the start of the engine, by first and second learnings, respectively. The learned value calculated by the first learning is stored as an existing learned value. Further, at the start of the engine, if the calculation of the learned value is not completed, the learned value is set to the existing stored learned value. | 07-16-2015 |
20150211961 | PUMPING LOSS CALCULATION DEVICE FOR INTERNAL COMBUSTION ENGINE - A pumping loss calculation device for an internal combustion engine, which is capable of accurately calculating the pumping loss of the engine while reflecting thereon the pumping loss which varies with a change in opening timing of an exhaust valve. The pumping loss calculation device calculates a basic amount of a pumping loss torque based on intake and exhaust pressures, a pumping loss torque of the pumping loss torque of the engine, which varies with a change in the opening timing of the exhaust valve, as an exhaust gas sweep-out loss torque, based on the estimated in-cylinder gas amount and a detected exhaust phase, and the pumping loss torque based on the basic amount and the exhaust gas sweep-out loss torque. | 07-30-2015 |
Patent application number | Description | Published |
20090108407 | Oxygen-doped n-type gallium nitride freestanding single crystal substrate - Oxygen can be doped into a gallium nitride crystal by preparing a non-C-plane gallium nitride seed crystal, supplying material gases including gallium, nitrogen and oxygen to the non-C-plane gallium nitride seed crystal, growing a non-C-plane gallium nitride crystal on the non-C-plane gallium nitride seed crystal and allowing oxygen to infiltrating via a non-C-plane surface to the growing gallium nitride crystal. | 04-30-2009 |
20100102330 | NITRIDE SEMICONDUCTOR DEVICE HAVING OXYGEN-DOPED N-TYPE GALLIUM NITRIDE FREESTANDING SINGLE CRYSTAL SUBSTRATE - Oxygen can be doped into a gallium nitride crystal by preparing a non-C-plane gallium nitride seed crystal, supplying material gases including gallium, nitrogen and oxygen to the non-C-plane gallium nitride seed crystal, growing a non-C-plane gallium nitride crystal on the non-C-plane gallium nitride seed crystal and allowing oxygen to infiltrating via a non-C-plane surface to the growing gallium nitride crystal. | 04-29-2010 |
20140117377 | OXYGEN-DOPED GALLIUM NITRIDE SINGLE CRYSTAL SUBSTRATE - Oxygen can be doped into a gallium nitride crystal by preparing a non-C-plane gallium nitride seed crystal, supplying material gases including gallium, nitrogen and oxygen to the non-C-plane gallium nitride seed crystal, growing a non-C-plane gallium nitride crystal on the non-C-plane gallium nitride seed crystal and allowing oxygen to infiltrating via a non-C-plane surface to the growing gallium nitride crystal. Oxygen-doped {20-21}, {1-101}, {1-100}, {11-20} or {20-22} surface n-type gallium nitride crystals are obtained. | 05-01-2014 |
20150194309 | OXYGEN-DOPED GALLIUM NITRIDE CRYSTAL SUBSTRATE - Oxygen can be doped into a gallium nitride crystal by preparing a non-C-plane gallium nitride seed crystal, supplying material gases including nitrogen and oxygen to the non-C-plane gallium nitride seed crystal, growing a non-C-plane gallium nitride crystal on the non-C-plane gallium nitride seed crystal and allowing oxygen to infiltrating via a non-C-plane surface to the growing gallium nitride crystal. | 07-09-2015 |