Abstract:
PROBLEM TO BE SOLVED: To provide a vehicular control device capable of improving fuel economy or suppressing the deterioration of emission by efficiently consuming evaporated fuel even if there are few opportunities for treating evaporated fuel. SOLUTION: The vehicular control device comprises a purge passage communicating to an intake pipe from a canister, a reflux passage communicating to the canister from the intake pipe, and a pump provided on the reflux passage. The reflux passage is formed for performing reflux between the intake pipe and the canister, and a passage for making gas in the intake pipe pass to the canister. A control means drives the pump to perform the reflux from the canister to the purge passage, the intake pipe, the reflux passage, and the canister. Therefore, even if intake negative pressure is not high, the evaporated fuel can be properly transferred from the canister to the intake pipe, and the treatment efficiency of the evaporated fuel can be improved. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a controller for a hybrid vehicle capable of enhancing the efficiency of power generation if there is a request for power generation. SOLUTION: The controller is provided for a hybrid vehicle having a power distribution device where an input element and a reaction element are connected to a drive source and generators, respectively to permit power transmission and an output element is connected to wheels via drive shafts to permit power transmission. The controller is capable of switching between a stepless variable speed mode in which rotation speed ratio between the drive source and the drive shafts is steplessly varied and a fixed variable speed mode in which rotation speed ratio is fixed. A first and a second generator are provided as the generators, the second generator having higher efficiency of power generation than the first generator. The controller has a power generation control means (step S9 to S14) which generates power using the second generator when the fixed variable speed mode is selected as a mode for controlling the rotation speed ratio and when there is a request for power generation. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suitably maintain active state of the catalyst, for example, in preparation for the operation of an internal combustion engine, to suppress power consumption required for the maintenance, and further, to secure opportunity of purge processing. SOLUTION: A hybrid vehicle controller includes a heating means for heating a catalyst, according to an energizing amount, the catalyst provided in a pipe passage in an exhaust pipe to purify exhaust gas exhausted by combustion in an internal combustion engine; an exhaust purge means for introducing evaporated fuel in a fuel tank storing fuel, as a purge gas from a canister that adsorbs the evaporated fuel to the upstream side of the catalyst in the exhaust pipe; an adjusting means for adjusting the introduced amount of the purge gas by the exhaust purge means; and a temperature-specifying means for specifying the temperature of the catalyst. The hybrid vehicle controller, further, includes a control means for controlling the energizing amount to the heating means and the driving state of the adjusting means, based on at least the specified temperature of the catalyst and the traveling state of the hybrid vehicle. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To sufficiently exhibit exhaust gas treatment function even if a catalyst carrier having NTC characteristic is used. SOLUTION: The electrically heating type catalyst apparatus is an electrically heating type catalyst apparatus for heating a catalyst for exhaust gas treatment by Joule heat. A positive electrode and a negative electrode are arranged in prescribed positions of this electrically heating type catalyst apparatus and a catalyst carrier electrically connects the positive electrode and negative electrode. The catalyst carrier has NTC characteristic that the resistance is continuously decreased when the temperature is increased. Partitioning means partitions the catalyst carrier with an insulating material and at least part of partitioned electric current paths are connected in series by a conductive material to make an electric current path for electric current flowing through the catalyst carrier long as compared with that in the case no partitioning by the insulating material is done. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a compact power output device having high mountability and efficiency of transmitting power in a wider driving range, and to provide a hybrid vehicle equipped therewith. SOLUTION: The hybrid vehicle 20 includes: a power distribution integration mechanism 40 which includes a carrier 45 connected to a motor MG 2, a sun gear 41 connected to a motor MG 1, and a ring gear 42 connected to an engine 22, and which serves as a double-pinion planetary gear mechanism with a gear ratio of around 0.5; a first speed-change planetary gear mechanism PG 1 and a second speed-change planetary gear mechanism PG 2, both of the three-element type; and a transmission 60 including a brake clutch BC 1 capable of locking and releasing the ring gear 62 of the first speed-change planetary gear mechanism and a brake clutch BC 2 which uses the second speed-change planetary gear mechanism PG 2 to transmit power and cancel the transmission of the power. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To make a combustion state when reset from a partial cylinder resting operation state satisfactory. SOLUTION: The fuel control device for the multi-cylinder multifuel internal combustion engine is provided with a variable cylinder system for resting operation of at least one cylinder of a plurality of cylinders (first to fourth cylinders 11a-11d) according to the operation condition, and can perform operation using a plurality of kinds of fuels (first fuel F1, second fuel F2) having different fuel properties singly or in admixture with each other. The fuel control device is provided with a fuel feeding control means (electronic control device 1) for performing operation using the fuel (second fuel F2) with high ignitibility of the fuel fed to the combustion chamber at reset from the cylinder resting operation. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To surely avoid damaging an exhaust emission control catalyst or the like, when fuel is switched to one different in a property under driving, as to a controller for an internal combustion engine of the present invention. SOLUTION: A throttle opening is limited when having a fuel supply history and when fuel learning is not finished (step 104), in the internal combustion engine operable by fuel mixed with alcohol and gasoline at an optional ratio. An intrusion within an operation area of requiring fuel amount increase correction is prevented by limiting the throttle opening. Air-fuel ratio feedback control is prevented thereby from being stopped when the fuel is switched. An air-fuel ratio is thereby prevented surely from being set in an improper value having the risk of damaging the catalyst. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust heat recovery device for an internal combustion engine, taking appropriate measures against an operation abnormality, by detecting the operation abnormality of a selector valve switching between heat exchange and restriction of the heat exchange in exhaust heat recovery equipment. SOLUTION: The exhaust heat recovery device for an internal combustion engine is suitably utilized for performing heat exchange between cooling water and exhaust gas by using the exhaust heat recovery equipment. Concretely, in the device, passages flowing the exhaust gas therethrough are switched by using the selector valve so as to perform switching between the heat exchange and the restriction of heat exchange in the exhaust heat recovery equipment. The operation abnormality of the flow passage selector valve is detected based on a cooling water temperature or the like so as to perform a control responding to the operation abnormality. Therefore, malfunction in operation of the internal combustion engine caused by the operation abnormality or breaking of the exhaust heat recover equipment can be effectively suppressed, while properly detecting the operation abnormality of the flow passage selector valve. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve accuracy in estimation of catalyst temperature during stop in an internal combustion engine including a charge and exhaust mechanism capable of materializing valve overlap. SOLUTION: Temperature of the catalyst is estimated based on elapsed time after previous stop and overlap quantity at a time of previous stop. Part of air fuel mixture introduced into a cylinder from an intake port is discharged to an exhaust port without staying in the cylinder when overlap is being executed. Consequently, it is thought that exhaust gas temperature in this case is lower than a case that overlap is not executed, and that it is lower as overlap quantity is large. Consequently, accuracy of estimation can be improved by taking overlap quantity into account. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To stabilize combustion at an early stage in cold start. SOLUTION: In a control device for an internal combustion engine provided with a valve timing control means controlling open and close timing and lift of an intake valve arranged in an intake port communicating to a cylinder of the internal combustion engine, one cycle of combustion of the internal combustion engine is set to multiple stroke operation including two or more intake/compression stroke comprising first intake/compression stroke and second intake/compression stroke, expansion stroke and exhaust stroke following the two or more intake/compression stroke. The valve timing control means controls lift of the intake valve in the first intake/compression stroke to lift smaller than normal lift necessary for intake of demand intake air quantity, and lift of the intake valve in the second intake/compression stroke to the normal lift. COPYRIGHT: (C)2008,JPO&INPIT