Abstract:
PROBLEM TO BE SOLVED: To efficiently operate an internal combustion engine in a hybrid vehicle. SOLUTION: In a hybrid system 10 a torque calculating part 100b calculates torque of an engine 200 from torque reaction of a motor generator MG1. A fuel consumption rate calculating part 100c calculates an instantaneous fuel consumption rate in the engine 200 on the basis of such the calculated engine torque, a fuel injection quantity and an engine speed. An operation line updating part 100d updates an operation line by performing operation line updating processing, and in this case, updates an operation point on the operation line to a fuel consumption rate minimum operation point fixed on an equal output line by performing first operation point learning processing when the temperature of a battery 500 is a predetermined value or more. While, when the temperature of the battery 500 is less than the predetermined value, second operation point learning processing is performed, and the fuel consumption rate is learnt on an equal rotational line. The temperature of the battery 500 is quickly recovered to the predetermined value or more in this process. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To efficiently operate an internal combustion engine control device for a hybrid vehicle. SOLUTION: In a hybrid system 10, a torque calculating part 100b calculates a torque of an engine 200 from a torque reaction of a motor generator MG1. A fuel consumption rate calculating part 100c calculates a momentary fuel consumption rate of the engine 200 based on the calculated engine torque, the fuel injection amount, and the engine speed. An operating line updating part 100d updates the operating line by performing an operating line updating process based on the calculated fuel consumption rate. At this time, a learning range setting part 100f changes the learning range of the fuel consumption rate set in the operating line updating process according to the vehicle speed, noise, or vibration of a hybrid vehicle 20. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To effectively operate an internal combustion engine in a hybrid vehicle even in a range where the efficiency in a hybrid vehicle is locally low. SOLUTION: In a hybrid system 10, a torque calculation part 100b calculates torque of an engine 200 from torque reaction force of a motor generator MG1. A fuel consumption rate calculation part 100c calculates an instantaneous fuel consumption rate in the engine 200 on the basis of a fuel injection amount and engine rotational speed. A working line updating part 100d updates a working line by executing a working point learning process on the basis of the calculated fuel consumption rate. When the engine 200 has the locally low efficiency range on the working line, a working point setting part 100f sets therein as a working point either having higher efficiency of a working point corresponding to required output or two working points switched and controlled to maintain the required output. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To reduce an amount of NOx exhausted outside a vehicle. SOLUTION: A power control method for a vehicle in which power of at least a prime mover 1 generates a driving force of a drive shaft 61, comprises: a step complying with a request for switching between air-fuel ratios in the prime mover 1; a step for controlling the switching between the air-fuel ratios so as to shorten a combustion time at the air-fuel ratio of large NOx emissions responding to the request for switching the air-fuel ratios; and a step for switching between operational modes controlling the power output from the prime mover 1 in a state of maintaining a constant air-fuel ratio, when a power control pattern of the prime mover 1 is switched to the operational mode meeting the request for switching between the air-fuel ratios. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an internal combustion engine capable of fully exhibiting an effect of expanding a lean limit by two point ignition while suppressing the occurrence of end gas knocking. SOLUTION: Two intake valves 3, 3 are provided side by side in one side with respect to a center line CC when viewed from the center line CC direction of a cylinder 2, and one exhaust valve 4 is provided in the other side. Ignition plugs 5 are arranged one by one at both sides of the exhaust valve 4. The plugs 5 are tilted so that an electrode part 8 of each plug is faced to the intake valve 3 side. COPYRIGHT: (C)2005,JPO&NCIPI