Class / Patent application number | Description | Number of patent applications / Date published |
477101000 | Engine ignition control for transmission change | 6 |
20090270224 | GEAR CHANGE CONTROL DEVICE, STRADDLE-TYPE VEHICLE, AND GEAR CHANGE CONTROL METHOD - A gear change control device actuates an actuator in response to an input of a gear change command and sets the clutch in an intermediate state between the engaged and disengaged states before a plurality of gears in the transmission are selectively engaged by dog clutches. In the intermediate state, a driving-side friction member and a driven-side friction member of the clutch are pressed against each other at a pressure lower than in the engaged state. The gear change control device actuates the clutch actuator to restore the friction clutch set in the intermediate state to the engaged state after the plurality of gears are selectively engaged. | 10-29-2009 |
20160039422 | METHOD OF CONTROLLING A VEHICLE DURING A CLUTCH-TO-CLUTCH POWER UPSHIFT OF A TRANSMISSION - A method of controlling a clutch-to-clutch power-on upshift of a transmission includes defining a possible engine torque as a latched possible engine torque value. An on-coming clutch torque phase target value is defined as a latched on-coming clutch torque value, and held constant until a final ramp. A commanded engine torque is reduced and maintained to a maximum torque reduction value until a shift completion ratio is achieved. The commanded engine torque is increased until the commanded engine torque is equal to a restore ramp target value. Both the on-coming clutch torque and the commanded engine torque are simultaneously increased at a final ramp rate, such that the increase in the on-coming clutch torque parallels the increase in the commanded engine torque, until an actual engine torque is substantially equal to the possible engine torque, to complete the shift. | 02-11-2016 |
477102000 | Ignition advanced or retarded | 4 |
20080287254 | Engine Control Apparatus and Engine Control Method - An engine control apparatus which performs torque-down control during shifting is structured so as to determine a retard rate from an MBT ignition timing which will achieve a target torque-down rate, and determine a target ignition timing based on that retard rate. The retard rate that achieves a given torque-down rate changes substantially linearly with respect to the MBT ignition timing, so that change is easy to predict. Accordingly, the structure and configuring and the like of the engine control apparatus are simplified. | 11-20-2008 |
20090017987 | Control Method and Control Device for Engine - In a control method and control device for an engine, in order to prevent torque control precision from deteriorating while performing an ignition retard control in a variable valve engine, when a torque down control is carried out by using the ignition retard, combustion duration is calculated in consideration of valve timing or an engine rpm for each driving state, and a characteristic of a reference ignition timing efficiency curve is corrected on the basis of a difference between the combustion duration and a combustion duration reference value which is set in advance. | 01-15-2009 |
20090275440 | VEHICLE RESPONSE DURING VEHICLE ACCELERATION CONDITIONS - A vehicle control method for transitioning through transmission lash regions is described using a variety of information, such as, for example, gear ratio, clutch slippage, etc. Further, different adjustment of spark and throttle angle is used to provide a rapid torque response while still reducing effects of the lash. Finally, transitions taking into account both slipping and non-slipping transmissions are described. | 11-05-2009 |
20160069318 | METHODS AND SYSTEM FOR IMPROVING HYBRID TRANSMISSION GEAR SHIFTING - Systems and methods for improving transmission gear shifting of a hybrid vehicle are presented. The systems and methods may allow transmission input shaft torque to be lowered to levels where driveline torque disturbances may be reduced even though the driveline has a larger inertia. In one example, driveline torque may be reduced via retarding spark timing. | 03-10-2016 |