DENSO CORPORAITON Patent applications |
Patent application number | Title | Published |
20130179052 | SENSOR SIGNAL PROCESSING DEVICE - A microcomputer is formed of a CPU and a detection circuit and inputs sensor signals of a vibration sensor and a rotation sensor. The detection circuit includes an AD converter circuit for AD conversion of the sensor signal of the vibration sensor at a predetermined sampling interval, a peak hold circuit for detecting a peak value of the sensor signal, a RAM for storing the peak value, a counter for detecting a crank angle at a peak value detection time, and an angle calculation part. The microcomputer divides a pre-ignition check interval into plural interval units and checks the pre-ignition based on the peak value detected in each unit interval. The pre-ignition and the knock are checked by using different threshold values in an interval, in which the pre-ignition check interval overlaps a knock check interval. | 07-11-2013 |
20120229267 | VEHICLE EXISTENCE NOTIFICATION APPARATUS - A vehicle existence notification apparatus disposed in a vehicle includes a sound wave generation unit that transmits a sound wave to an area outside of the vehicle, and a control unit that controls the sound wave generation unit to generate a notification sound. The control unit generates a stopping-vehicle notification sound for notifying existence of a stop condition of the vehicle, and generates a moving-vehicle notification sound for notifying existence of a traveling condition of the vehicle. The simulated idling sound enables a pedestrian to recognize the vehicle when the vehicle is in a stop condition, and the simulated moving-vehicle sound enables the pedestrian to recognize the vehicle when the vehicle is in a traveling condition. | 09-13-2012 |
20110067419 | AIR-CONDITIONING CONTROL DEVICE FOR VEHICLE - An air-conditioning control device for a vehicle includes an air-conditioner, an estimating portion, and a controller. The air-conditioner includes a compressor driven by an engine of the vehicle so as to compress refrigerant, and a heat storage portion having a coolness storage agent to store heat of the refrigerant. A passenger compartment of the vehicle is air-conditioned using air cooled by the heat storage portion when the compressor is stopped. The estimating portion estimates a present value of coolness amount stored in the heat storage portion based on a temperature history of the refrigerant. The controller controls the compressor based on the estimated present value of coolness amount. | 03-24-2011 |