54 results about "Idle reduction" patented technology

One embodiment relates to a hybrid vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, a rechargeable power source, and a PTO. The hybrid vehicle drive system further includes a hydraulic motor in direct or indirect mechanical communication with the PTO and an electric motor in direct or indirect mechanical communication with the hydraulic motor. The electric motor can provide power to the prime mover driven transmission and receive power from the prime mover driven transmission through the PTO. The hydraulic motor can provide power to the prime mover driven transmission and receive power from the prime mover driven transmission through the PTO.

One embodiment relates to a hybrid vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, a rechargeable power source, and a PTO. The hybrid vehicle drive system further includes a hydraulic pump in direct or indirect mechanical communication with the PTO. The hybrid vehicle drive system further includes an electric motor in direct or indirect mechanical communication with the hydraulic pump. The electric motor can receive power from the prime mover driven transmission through the PTO. The hydraulic pump can receive power from the electric motor when the electric motor rotates, the electric motor using power from the rechargeable energy source, or from the prime mover driven transmission through the PTO.

One embodiment relates to a hybrid vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, a rechargeable power source, and a PTO. The hybrid vehicle drive system further includes a hydraulic motor in direct or indirect mechanical communication with the PTO and an electric motor in direct or indirect mechanical communication with the hydraulic motor. The electric motor can provide power to the prime mover driven transmission and receive power from the prime mover driven transmission through the PTO. The hydraulic motor can provide power to the prime mover driven transmission and receive power from the prime mover driven transmission through the PTO.

An idle reduction vehicle has a relay in a power supply line from a battery to a starter motor. The relay is driven between a contact-side state, in which contacts short-circuit, and a resistor-side state, in which the contacts are opened and a resistor is serially inserted into the power supply line. At an engine restart from idle reduction, an ECU drives the relay to the resistor-side state and starts energization to the motor, thereby suppressing an inrush current. The ECU detects a contact-side state fixation abnormality of the relay based on a battery voltage at the time when the ECU drives the relay to the resistor-side state and energizes the motor. The ECU detects a resistor-side state fixation abnormality of the relay based on the battery voltage at the time when the ECU drives the relay to the contact-side state and energizes the motor.

A vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, and a rechargeable power source can be configured for reduced fuel consumption at idle. The vehicle drive system includes an electric motor in direct or indirect mechanical communication with the first prime mover. The control system causes fuel to be eliminated to the first prime mover while the vehicle is stopped and causes the electric motor to rotate the first prime mover at a speed, thereby reducing fuel consumption at idle for the vehicle.

A work vehicle includes a vehicle main body, a work implement, an engine, an idle reduction execution portion, and a position determination portion. The work implement is provided in the vehicle main body and includes a boom provided to be drivable in a vertical direction, an arm provided to be drivable with respect to the boom, and a bucket attached to a tip end of the arm. The idle reduction execution portion can stop the engine in an idling state. The position determination portion determines whether or not the bucket may interfere with the vehicle main body, based on a position state of rest of the work implement. When the position determination portion determines that the bucket may interfere with the vehicle main body, the idle reduction execution portion does not stop the engine, and when it is determined otherwise, the idle reduction execution portion stops the engine.

A method for controlling a mechanical solenoid valve of a high-pressure fuel pump to supply fuel to an engine is provided. The method includes: during an idle condition, adjusting a pull-in current of the mechanical solenoid valve utilized to control closing of the mechanical solenoid valve based on a fuel pressure downstream of the high-pressure fuel pump, wherein the pull-in current is reduced when possible while enabling the mechanical solenoid valve to close as indicated by an increase in the downstream fuel pressure.

A system for automatically adjusting the temperature and carbon monoxide level in an occupied passenger compartment of a vehicle includes sensors for sensing carbon monoxide levels, temperature, and occupants in the passenger compartment. A controller receives input from the sensors, and activates an electric heater or an electric cooler to bring the temperatures within the passenger compartment within a predetermined temperature range if the temperature detected within the passenger compartment falls outside of the predetermined range of temperatures. The controller may automatically shut off the engine of the vehicle when the vehicle is in idle and the carbon monoxide level within the passenger compartment falls above a predetermined level, or if a transmission lever of the vehicle is placed in a park position. A motor generator unit coupled to the engine provides electricity to rechargeable batteries of an alternate power unit, which powers the electric heater and the electric cooler.

A method for operating a solenoid valve coupled to the inlet valve of a fuel injection pump comprises adjusting a pull-in electrical energy of the solenoid valve based on a fuel injection pump volumetric efficiency.

A method for operating an engine at idle that reduces NOx and controls smoke and hydrocarbon emissions. An idle delivery quantity of fuel is determined and divided into a first quantity of fuel and a second quantity of fuel in approximately equal quantities. During a compression stroke of an engine piston, the first quantity of fuel is injected into an engine cylinder. Adjusting at least one of timing and quantity of the injection of the first quantity of fuel reduces, at least in part, NOx emissions. At a timing angle of at least thirty degrees after the first quantity of fuel is injected and after the first quantity of fuel has been burned, there is an injection of the second quantity of fuel. Adjusting at least one of timing and quantity of the injection of the second quantity of fuel reduces, at least in part, smoke emissions.

The present concept is method of controlling a vehicle's engine idle and includes the steps of monitoring a vehicles operating parameters with a controller and comparing parameters to preselected shutdown conditions. In the event shutdown conditions are met and the key is not in the ignition, the controller warns operator of impending shutdown. The controller intercepts the ignition key signal and simulates the vehicle key to be in the run position such that vehicle functions are operable as if key is in run position. The controller shuts down engine. The method may also include the steps of: the controller intercepting the ignition key signal and simulating the vehicle key to be in the accessory position such that vehicle functions are operable as if key is in accessory position.

In one embodiment, a hydraulic pressure control circuit (4) of an automatic transmission includes a mechanical oil pump (MOP) and an electrical oil pump (EOP). The discharge side of the electrical oil pump (EOP) is caused to be in communication with the direct upstream side of a hydraulic pressure servo of a first clutch (C1) via a shunt hydraulic pressure supply passage (430). At the time of idle reduction, a linear solenoid (411) on the upstream side of the first clutch (C1) is caused to enter a forced closure state, thus preventing oil from the electrical oil pump (EOP) from flowing to a manual shift valve (410) side.

An idle reduction control device mounted on a vehicle equipped with an engine and a brake including: a detector that detects a parameter having a positive correlation to an amount of brake operation; and an engine controller that controls a start and a stop of the engine. The engine controller stops the engine after a stop of the vehicle, when a change of the parameter caused by a release of the brake is equal to or greater than a predetermined value during a deceleration period before the stop of the vehicle.

A pump motor of a hydraulic hybrid system also serves as a pump to supply hydraulic oil or lubricating oil to a power train, thus enabling elimination of an oil pump provided in the power train and hence reductions in the number of parts and cost, and, in addition, an existing oil pan provided in the power train and the like are utilized for the hydraulic hybrid system, which in turn enables achieving further reductions in the number of parts and cost. Moreover, when idle-reduction control is performed on an engine, during engine's stopped conditions, the pump motor can be driven as a motor by hydraulic pressure accumulated in an accumulator to start the engine and supply the hydraulic pressure to a transmission, thus eliminating a need to provide a motor-driven oil pump for the idle-reduction control and hence enabling a further reduction in cost.

There is a need to further improve the fuel consumption of a vehicle. There is provided a vehicle control device mounted on a vehicle having: an engine; a battery that is chargeable with an amount of electric power generated by a generator which is driven with power of the engine; and auxiliary machinery that are operated with electric power of the battery. The vehicle control device comprises an idle reduction controller, an SOC detector, a current value obtaining section, a current correcting section, an idle reduction capacity setting section and a remaining capacity controller. The current correcting section comprises: a smoothing process section that makes the current value obtained by the current value obtaining section subject to a smoothing process; a specific auxiliary machine operation detecting section that determines whether a specific auxiliary machine, which is included in the auxiliary machinery and is likely to have a temporary abrupt change of the current value, is in an operating state; and a current change suppressing section that suppresses an effect of a latest current value obtained by the current value obtaining section, in the smoothing process, when the specific auxiliary machine is determined to be in the operating state.

A work vehicle of the present invention includes an engine, a cooling core, a fan, a hydraulic drive unit, and an idle reduction execution unit. The cooling core is mounted in the work vehicle. The fan is configured to blow air to the cooling core and to be capable of making regular and reverse rotations. The hydraulic drive unit is configured to drive the fan by driving the engine. The idle reduction execution unit is configured to stop the engine based on a state of rotation of the fan caused by the hydraulic drive unit and based on an idle state. The idle reduction execution unit stops the engine on a condition that the fan makes regular rotation and the idle state has continued for a predetermined time, and does not stop the engine on a condition that the fan makes reverse rotation.

A vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, and a rechargeable power source can be configured for reduced fuel consumption at idle. The vehicle drive system includes an electric motor in direct or indirect mechanical communication with the first prime mover. The control system causes fuel to be eliminated to the first prime mover while the vehicle is stopped and causes the electric motor to rotate the first prime mover at a speed, thereby reducing fuel consumption at idle for the vehicle.

The present invention relates to an oil supply device for use in an automatic transmission mounted on a vehicle, and is applied to a vehicle in which an idle reduction control or the like is performed. The oil supply device includes an oil pump which is driven by a driving motor of a vehicle and a motor separate from the driving motor, and an engagement and disengagement element which transmits a driving force of the driving motor to the oil pump, and the oil pump is driven by the motor without using a drive system of the driving motor.

A vehicle drive system for a vehicle includes a first prime mover, a first prime mover driven transmission, and a rechargeable power source. The vehicle drive system includes an electric motor and direct or indirect mechanical communication with the first prime mover. Wherein the electric motor can receive power from the first prime mover driven transmission and can receive power from the first prime mover. The vehicle drive system also includes a control system that causes the electric motor to rotate the first prime mover at a speed higher than an idle set point of the first prime mover while the vehicle is stopped, thereby reducing fuel consumption at idle per the vehicle.

The invention provides a device utilizing hydrogen gas to realize quick start and stop of an ignition internal-combustion engine and a control method thereof and particularly relates to control of combustion and quick start and stop of an internal-combustion engine. A hydrogen gas supply device and an electronic control unit are additionally arranged on the basis of reserving all parts of the internal-combustion engine body. The electronic control unit can judge and control stop and running of the internal-combustion engine according to revolution speed of the internal-combustion engine, automobile speed and position of a throttle valve to reduce idling running time of the internal-combustion engine greatly so that waste of energy of the internal-combustion engine during idling and harmful emission are reduced. Besides, since pure hydrogen gas is used as fuel to start the internal-combustion engine quickly, the start time is shortened, and fuel consumption and harmful emission of the internal-combustion engine during starting are decreased.

A power system for a vehicle is provided, in which idle reduction control is performed, under which an engine is automatically stopped when a predetermined automatic stop condition is met, and automatically restarted when a predetermined restart condition is met in a state where the engine is automatically stopped. The power system includes a generator which is driven on the basis of output of the engine, a battery which is connected to the generator, and a controller which allows the generator to generate power when an amount of charge of the battery has decreased below a lower limit, and which sets the lower limit to a higher level when the speed of the vehicle has exceeded a predetermined speed than in a case where a speed of the vehicle has not exceeded the predetermined speed.