초록 ▼

This invention provides a strategy and system for an hybrid electric vehicle (HEV) that is not equipped with a hydraulic torque converter wherein a generator motor is utilized to maintain engine rotational velocity during up-shifting of the vehicle transmission in situations where the throttle of th

This invention provides a strategy and system for an hybrid electric vehicle (HEV) that is not equipped with a hydraulic torque converter wherein a generator motor is utilized to maintain engine rotational velocity during up-shifting of the vehicle transmission in situations where the throttle of the engine is released. This invention can reduce undesirable torque reversals during up-shifting of the vehicle transmission in such situations where the throttle of the engine is released. A controller is adapted to control the generator is supplied with data output by detectors that monitor the rotational velocity of said engine and the gear ratio of the transmission. The controller is programmed to command the generator to maintain the rotational velocity of said engine above a preselected threshold during up-shifting of the transmission.

대표청구항 ▼

This invention provides a strategy and system for an hybrid electric vehicle (HEV) that is not equipped with a hydraulic torque converter wherein a generator motor is utilized to maintain engine rotational velocity during up-shifting of the vehicle transmission in situations where the throttle of th

This invention provides a strategy and system for an hybrid electric vehicle (HEV) that is not equipped with a hydraulic torque converter wherein a generator motor is utilized to maintain engine rotational velocity during up-shifting of the vehicle transmission in situations where the throttle of the engine is released. This invention can reduce undesirable torque reversals during up-shifting of the vehicle transmission in such situations where the throttle of the engine is released. A controller is adapted to control the generator is supplied with data output by detectors that monitor the rotational velocity of said engine and the gear ratio of the transmission. The controller is programmed to command the generator to maintain the rotational velocity of said engine above a preselected threshold during up-shifting of the transmission. asurements, wherein the detecting mechanism comprises a field of view and the apparatus further comprises a tracking mechanism for moving the field of view so that the field of view tracks movements of the region. 24. An apparatus according to claim 23, further comprising a transmitting mechanism operative for transmitting electromagnetic radiation so that transmitted electromagnetic radiation is incident upon the region and reflected by the region to the detecting mechanism, wherein the transmitting mechanism is operative for transmitting a beam that comprises electromagnetic radiation that is at least partially absorbed by liquid, and the tracking mechanism is further operative for moving the beam so that the beam tracks movements of the region. 25. An apparatus according to claim 22, wherein the detecting mechanism is operative so that: the first measurement is a measurement of a first type of elec