Abstract: An exhaust muffler has an outer cylinder into which an exhaust gas from an engine is introduced and a muffling member made of a foamed ceramic material. The outer cylinder has an inner cylinder through which the exhaust gas passes, a part of the muffling member is supported by an outer wall of the inner cylinder via a holding member. The inner cylinder includes, in an area where the inner cylinder overlaps with the muffling member with respect to axial direction of the inner cylinder, a porous wall portion formed with communication holes communicating an inside and an outside of the inner cylinder. The holding member is arranged at a position where it does not overlap with a part of the porous wall portion, so that muffling effect is enhanced, and the muffling member having a low resistance to impact forces can be supported stably by the inner cylinder.

Abstract: An exhaust muffler has an outer cylinder into which an exhaust gas from an engine is introduced and a muffling member made of a foamed ceramic material. The outer cylinder has an inner cylinder through which the exhaust gas passes, a part of the muffling member is supported by an outer wall of the inner cylinder via a holding member. The inner cylinder includes, in an area where the inner cylinder overlaps with the muffling member with respect to axial direction of the inner cylinder, a porous wall portion formed with communication holes communicating an inside and an outside of the inner cylinder. The holding member is arranged at a position where it does not overlap with a part of the porous wall portion, so that muffling effect is enhanced, and the muffling member having a low resistance to impact forces can be supported stably by the inner cylinder.

Abstract: A remaining fuel amount warning device for a vehicle, the remaining fuel amount warning device giving a warning that an amount of fuel remaining in a fuel tank is smaller than a predetermined value on the basis of output of a fuel gauge measuring the remaining fuel amount, includes combustion state changing device for changing the combustion state of an engine. When the remaining fuel amount becomes smaller than the predetermined value, the remaining fuel amount warning device performs remaining amount warning control that produces vibration different than during normal operation by changing the combustion state of the engine by the combustion state changing device. A starter switch for starting the engine is made to serve also as a warning acknowledging button for stopping the remaining amount warning control for a predetermined time on the basis of an operation by an occupant.

Abstract: An approach notification device of a straddle type vehicle which can effectively notify a rider of an approaching state of an obstacle, the device including an obstacle detection device for detecting an obstacle located around a motorcycle as an vehicle, an approach determination device for detecting an approaching state that the obstacle is located within a predetermined distance from the vehicle, and a winker operation resistance increasing device for increasing operation resistance of a winker manipulator of a winker device provided in the vehicle. When the obstacle is determined to be within the predetermined distance by the approach determination device and the operation of the winker manipulator in the direction of the obstacle is detected, the winker operation resistance increasing device is operated to increase the operation resistance of the winker manipulator and vibrators located in a steering handle and a fuel tank are operated.

Abstract: A remaining fuel amount warning device for a vehicle, the remaining fuel amount warning device giving a warning that an amount of fuel remaining in a fuel tank is smaller than a predetermined value on the basis of output of a fuel gauge measuring the remaining fuel amount, includes combustion state changing device for changing the combustion state of an engine. When the remaining fuel amount becomes smaller than the predetermined value, the remaining fuel amount warning device performs remaining amount warning control that produces vibration different than during normal operation by changing the combustion state of the engine by the combustion state changing device. A starter switch for starting the engine is made to serve also as a warning acknowledging button for stopping the remaining amount warning control for a predetermined time on the basis of an operation by an occupant.

Abstract: An approach notification device of a straddle type vehicle which can effectively notify a rider of an approaching state of an obstacle, the device including an obstacle detection device for detecting an obstacle located around a motorcycle as an vehicle, an approach determination device for detecting an approaching state that the obstacle is located within a predetermined distance from the vehicle, and a winker operation resistance increasing device for increasing operation resistance of a winker manipulator of a winker device provided in the vehicle. When the obstacle is determined to be within the predetermined distance by the approach determination device and the operation of the winker manipulator in the direction of the obstacle is detected, the winker operation resistance increasing device is operated to increase the operation resistance of the winker manipulator and vibrators located in a steering handle and a fuel tank are operated.

Abstract: An acceleration shock reduction control system for a vehicle which can reduce a shock at a transition to an accelerating state without deteriorating an acceleration response. An acceleration shock reduction control system for vehicle includes a control unit which determines a transition from a decelerating state to an accelerating state, and which thus controls the ignition of an internal combustion engine to adjust the output of the engine. In the acceleration shock reduction control system, upon detecting the transition from the decelerating state to the accelerating state, the control unit gives an instruction for an ignition cut which is executed over a predetermined time period Tr after a predetermined waiting time period Tw elapses.

Abstract: A tensioner for an endless transmission belt includes a plunger body. A plunger is movably provided in a hole of the plunger body to press the belt. A chamber is provided between the plunger and the plunger body to store hydraulic oil. An oil supply passage is provided in the plunger body to supply the oil from an oil pump to the chamber. A check valve is provided between the chamber and the passage and configured to allow the oil to be supplied from the pump to the chamber while the check valve is configured to be closed when a pressure in the chamber is higher than a pressure of the oil supplied by the pump. A relief valve is provided between the chamber and the passage and configured to discharge the oil in the chamber to the passage when the pressure in the chamber exceeds a first predetermined value.

Abstract: A tensioner for an endless transmission belt includes a plunger body and a plunger. The plunger is movably provided in the plunger body to press the endless transmission belt. A pressure chamber provided between the plunger and the plunger body is configured to store hydraulic oil supplied from an oil pump. A check valve is provided in the plunger body, configured to be opened to supply the hydraulic oil to the pressure chamber when a pressure in the pressure chamber is lower than an oil pressure from the oil pump, and configured to be closed when the pressure is higher than the oil pressure. A relief valve is provided in the plunger body within a width of the plunger in a direction orthogonal to a longitudinal direction of the plunger and configured to discharge the hydraulic oil in the pressure chamber when the pressure exceeds a predetermined value.

Abstract: A tensioner for an endless transmission belt includes a plunger body and a plunger. The plunger is movably provided in the plunger body to press the endless transmission belt. A pressure chamber provided between the plunger and the plunger body is configured to store hydraulic oil supplied from an oil pump. A check valve is provided in the plunger body, configured to be opened to supply the hydraulic oil to the pressure chamber when a pressure in the pressure chamber is lower than an oil pressure from the oil pump, and configured to be closed when the pressure is higher than the oil pressure. A relief valve is provided in the plunger body within a width of the plunger in a direction orthogonal to a longitudinal direction of the plunger and configured to discharge the hydraulic oil in the pressure chamber when the pressure exceeds a predetermined value.

Abstract: A tensioner for an endless transmission belt includes a plunger body. A plunger is movably provided in a hole of the plunger body to press the belt. A chamber is provided between the plunger and the plunger body to store hydraulic oil. An oil supply passage is provided in the plunger body to supply the oil from an oil pump to the chamber. A check valve is provided between the chamber and the passage and configured to allow the oil to be supplied from the pump to the chamber while the check valve is configured to be closed when a pressure in the chamber is higher than a pressure of the oil supplied by the pump. A relief valve is provided between the chamber and the passage and configured to discharge the oil in the chamber to the passage when the pressure in the chamber exceeds a first predetermined value.

Abstract: An acceleration shock reduction control system for a vehicle which can reduce a shock at a transition to an accelerating state without deteriorating an acceleration response. An acceleration shock reduction control system for vehicle includes a control unit which determines a transition from a decelerating state to an accelerating state, and which thus controls the ignition of an internal combustion engine to adjust the output of the engine. In the acceleration shock reduction control system, upon detecting the transition from the decelerating state to the accelerating state, the control unit gives an instruction for an ignition cut which is executed over a predetermined time period Tr after a predetermined waiting time period Tw elapses.

Abstract: To provide a hydraulic tensioner lifter which can reduce the filling time of oil pressure into an oil chamber which is in a state wherein air is present therein and can sufficiently exhibit a vibration-damping function. A hydraulic tensioner lifter for applying tension to an endless power transmission band of a power transmission mechanism includes a plunger fitted for sliding movement in an accommodation hole of a tensioner body B and cooperating with the tensioner body B to define an oil chamber therebetween. An air-bleeder mechanism is provided for exhausting air in the oil chamber to the outside of the oil chamber. The purge valve P has a check valve function of permitting the exhaustion of the air in the oil chamber to the outside of the oil chamber but blocking admission of air into the oil chamber from the outside of the oil chamber and blocking discharging of the oil pressure in the oil chamber to the outside of the oil chamber.

Abstract: To provide a hydraulic tensioner lifter which can reduce the filling time of oil pressure into an oil chamber which is in a state wherein air is present therein and can sufficiently exhibit a vibration-damping function. A hydraulic tensioner lifter for applying tension to an endless power transmission band of a power transmission mechanism includes a plunger fitted for sliding movement in an accommodation hole of a tensioner body B and cooperating with the tensioner body B to define an oil chamber therebetween. An air-bleeder mechanism is provided for exhausting air in the oil chamber to the outside of the oil chamber. The purge valve P has a check valve function of permitting the exhaustion of the air in the oil chamber to the outside of the oil chamber but blocking admission of air into the oil chamber from the outside of the oil chamber and blocking discharging of the oil pressure in the oil chamber to the outside of the oil chamber.