Abstract:
PROBLEM TO BE SOLVED: To provide a diesel engine lubricated with fuel such as diesel oil, for lubricating an engine lubrication system or the like, early consuming fuel susceptible to mixing of a dirty component such as soot therein, and efficiently cleaning exhaust. SOLUTION: The diesel engine 1 lubricated with fuel such as diesel oil has a fuel adding means (fuel adding valve 25) for adding the fuel to a diesel catalyst 24 disposed to an exhaust system. The fuel added by the fuel adding means 25 functions as additive for NO x reduction or additive of increasing catalyst temperature in the diesel catalyst 24. Since the fuel containing soot or the like supplied to the engine body 7 of the diesel engine 1 lubricated with fuel such as diesel oil can be consumed early, the effect on a component of an injection system such as an injection pump and a fuel injection valve is mitigated. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide technology of quickly raising temperature of an internal combustion engine in the cold and improving a fuel consumption rate by effectively using return fuel. SOLUTION: The internal combustion engine has a first return passage 52 which branches from a return passage 50 and leads to a fuel tank 11 through an oil pan 60 for heat-exchange with engine oil in the oil pan 60. The return fuel is allowed to flow in the first return passage 52 at least in the cold and heat is exchanged between the return fuel and the engine oil so that temperature of the engine oil is raised and the temperature of an engine 1 is quickly raised. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a control method for deceleration of a hybrid vehicle which can suppress a sudden change in the engine brake amount during deceleration of a vehicle to reduce a torque shock. SOLUTION: The control method for deceleration of a hybrid vehicle is switchably constituted between an E mode (first mode) for decelerating by increasing the regeneration amount of a motor generator by automatically cutting off a clutch during deceleration without applying an engine brake, and an M mode (second mode) for decelerating by applying an engine brake while the clutch is engaged, and for regenerating with the motor generator. Travelling information is read (S10) and, when a mode is switched from one mode to another (S12 affirmation) at the time of deceleration of a vehicle (S11 affirmation), an actual engine brake torque Tenga is calculated (S13 to S15) from a clutch stroke Cst, an actual engine torque Teng and a given map, to gradually change the regeneration torque Tmg in view of the magnitude thus calculated. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a vacuum pump control method and mounting structure for a diesel hybrid vehicle, capable of appropriately maintaining negative pressure inside a negative pressure tank during EV traveling. SOLUTION: Negative pressure inside the negative pressure tank is detected during EV traveling (Yes in Step S10, Step S11), and when negative pressure runs short, an engine is started and a vacuum pump is driven by idle driving (Yes in Step S12, Step S13). After start of the engine, charge amount of a battery is detected (Step S14), and when the charge amount is below a predetermined value, a clutch is engaged and power generation control is performed by engine traveling (No in Step S15, Steps S19 to S21). When the charge amount of the battery exceeds the predetermined value and a negative pressure value detected again is recovered to a predetermined value, the engine is stopped (Yes in Step S15, Step S16, Yes in Step S17, Step S18). COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To suppress a vibration generated at the initial time of starting a hybrid vehicle when the hybrid vehicle is started by a motor drive. SOLUTION: In the hybrid vehicle, at the initial time of starting by driving the vehicle only with a motor, a vibration-proofing operation which affects a vibration-proofing effect to a wheel drive system by starting the motor only for a period until the rotating speed of the motor exceeds a predetermined value. One of them is to engage a clutch provided between an internal combustion engine and the motor. The other is to switch a speed change gear connected with the motor to a neutral position. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To restore negative pressure for braking operation without restarting an internal combustion engine when the negative pressure for the brake operation is insufficient during electric driving to stop the internal combustion engine in a hybrid vehicle constituted so that the drive control device has the internal combustion engine and the electric motor as a driving source, and a vacuum pump generating the negative pressure for the brake operation is driven by accompanying with the rotation of the internal combustion engine. SOLUTION: When the negative pressure for the brake operation is insufficient during electric driving, the drive control device cranks the internal combustion engine by connecting to a wheel driving system, controls the output of the electric motor so as to compensate cranking friction torque of the internal combustion engine by the electric motor or cranks the internal combustion engine with a starter. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To suppress the change of a driving force by adjusting the driving force to a desired value and by absorbing the change of engine torque, even if change occurs in the engine torque. SOLUTION: This motor generator control method is for a parallel hybrid vehicle provided with an engine that has a cylinder internal pressure sensor and a motor generator that assists power generation by an engine output or the engine output by battery electric power. Based on the detected opening of an accelerator, engine revolutions, and preset demanded torque map, driver-demanding torque is calculated (Steps S10, S11). Using the output value of the cylinder internal pressure sensor, the change of the cylinder internal pressure is detected (Step S12). Based on this detected cylinder internal pressure, the predicted amount of change of the engine torque or the predicted amount of change of the driving force is calculated (Steps S13, S14, S15). According to the predicted amount of change of the engine torque, the assist amount or the regeneration amount of the motor generator is feedback-controlled (Step S16). COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To accurately determine existence or nonexistence of combustion failure in a combustion chamber of an internal combustion engine. SOLUTION: A control device for an internal combustion engine comprises: a cylinder pressure detection means 47 detecting pressure in the combustion chamber 5 of the internal combustion engine; a calculation means calculating the product PV of pressure in the combustion chamber detected by the cylinder pressure detection means and a capacity of the combustion chamber; a timing detection means detecting timing CAp in which the product calculated by the calculation means becomes maximum as peak timing; and a combustion failure determination means determining the existence or nonexistence of the combustion failure in the combustion chamber based on the peak timing. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To fully increase the occasions to carry out low temperature combustion in a control device for a diesel engine vehicle provided with a diesel engine carrying out low temperature combustion in a first operation range and carrying out normal combustion in a second operation range, and an automatic stepped transmission having a clutch. SOLUTION: This control device for the diesel engine vehicle is provided with an automatic stepped transmission control means for changing a gear ratio by the automatic stepped transmission to change the present operation range from the second operation range to the first operation range, and an intake air quantity control means (a target throttle valve opening A3) increasing an intake air quantity Q2 decreased to cut off a clutch, only up to an intake air quantity Q4 suitable to carry out low temperature combustion in a steady operation state in the first operation range after the change after connecting the clutch. The low temperature combustion is started before the connection of the clutch. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a technology for stabilizing engine speed by maintaining the engine speed during the shift at an idling speed or over in a hybrid vehicle. SOLUTION: A hybrid vehicle having an engine and an electric motor comprises a transmission for automatically operating a clutch during the shift, an engine control device to control the operation of the engine, and a transmission control device for controlling the clutch operation of the transmission and the engine for controlling the engine during the clutch operation. When the vehicle is decelerated, and the clutch is uncoupled by the transmission, the engine is controlled not by the transmission control device but by the engine control device. COPYRIGHT: (C)2004,JPO