摘要:
A fuel injection advance angle control member (28) and a fuel control member (52) are manually and simultaneously controllable to increase the fuel injection angle and the volume of fuel injection, before an engine is started. A knob (112) is located in a position accessible for manipulation. A wire (110) connects the knob (112) to cams (102, 82) which are associated with the fuel injection advance angle control member (28) and the fuel control member (52), respectively. The connection between the knob (112) and the cam (102) includes a spring (210, 300) which is yieldable when the knob (112) is pulled, so that a reaction force counteracting the pulling effort is reduced to promote manipulation with a minimum of effort. Upon an engine start, the resilient force accumulated in the spring (210, 300) is released to move the member (28) to a desired advanced angle position through the cam (102).
摘要:
An exhaust gas purifying apparatus for an internal combustion engine, including a filter provided in an exhaust system of the engine for trapping particulates in exhaust gases, and a pressure difference sensor for detecting a pressure difference between an upstream side pressure of the filter and a downstream side pressure of the filter. A non-frozen state of the pressure difference sensor is determined based on at least one of a first parameter relevant to an exhaust gas temperature of the engine and a second parameter relevant to an atmospheric temperature. An abnormality of the filter is determined based on a result of the non-frozen state determination.
摘要:
A fuel-air mixture control apparatus for adjusting the mixture of fuel and air that a carburetor provides to an internal combustion engine. A mixing passage provides a fuel-air mixture to one or more combustion chambers of an internal combustion engine. A main fuel supply passage provides fluid communication between a fuel source and the mixing passage through a main fuel nozzle. An idle fuel supply passage provides fluid communication between a fuel source and the mixing passage through an idle fuel nozzle. An idle fuel ratio control valve adjusts the proportion of fuel drawn into the mixing passage through the idle fuel supply passage to the flow rate of air drawn into the mixing passage. The idle fuel supply passage is in fluid communication with the main fuel nozzle. Vacuum pressure induced by flow rates across the main fuel nozzle, which exceed a predetermined flow rate, precludes idle fuel flow into the mixing passage. As such, the position of the idle fuel ratio control valve cannot affect the fuel air mixture at throttle settings that provide a flow of fuel and air equal to or exceeding the predetermined value. A main fuel flow ratio control valve adjusts the proportion of fuel drawn into the mixing passage through the main fuel supply passage to the flow rate of air drawn into the mixing passage.
摘要:
A failure determination device capable of performing failure determination for a shutter device of a vehicle with accuracy in a short time period. In an engine room of a vehicle, a condenser for a refrigeration cycle for an aircon is provided and at a front grille of the vehicle, a grille shutter device is provided for introducing ambient air for cooling the condenser into the engine room by opening a grille shutter. According to the failure determination device of the shutter device, a pressure of the refrigerant discharged from the condenser is detected as a refrigerant pressure. A failure of the grille shutter device is determined based on the refrigerant pressure, which changes at a large rate according to the opening/closing of the grille shutter, enabling failure determination with accuracy in a short time period.
摘要:
The substrate holding device of the present invention includes a holding unit that adsorbs and holds the substrate, a measuring section that measures a physical quantity relating to a adsorption force of the holding unit with the substrate mounted on the holding unit; and a control section that carries out a first determination based on a first condition and a measurement result obtained by the measuring section and a second determination based on a second condition that is different from the first condition and a measurement result obtained by the measuring section to select one of at least three preset operations based on the result of first and second determinations to thereby execute processing depending on the selected operation.
摘要:
A carburetor for an internal combustion engine with an accelerator fuel pump in the carburetor having a piston actuated by a cam on a throttle valve shaft and a ball between them. The axis of a pump chamber in which the piston is slidably received is offset from and eccentric to the axis of rotation of the throttle shaft so that little fuel is supplied to the operating engine by the accelerator pump as the shaft is rotated to move the throttle valve from its idle position to an intermediate position and most of the fuel supplied by the accelerator pump to the engine is delivered as the shaft is rotated to move the throttle valve from the intermediate position to its wide open throttle position. This provides a proper fuel mixture to the engine to accelerate it and avoids the problem of supplying an overly rich fuel mixture to the engine during acceleration and particularly if the operator moves the throttle valve several times back and forth between the idle and intermediate positions before moving the throttle valve to the wide open position to accelerate the engine.
摘要:
A failure determination device capable of performing failure determination for a shutter device of a vehicle with accuracy in a short time period. In an engine room of a vehicle, a condenser for a refrigeration cycle for an aircon is provided and at a front grille of the vehicle, a grille shutter device is provided for introducing ambient air for cooling the condenser into the engine room by opening a grille shutter. According to the failure determination device of the shutter device, a pressure of the refrigerant discharged from the condenser is detected as a refrigerant pressure. A failure of the grille shutter device is determined based on the refrigerant pressure, which changes at a large rate according to the opening/closing of the grille shutter, enabling failure determination with accuracy in a short time period.
摘要:
The substrate holding device of the present invention includes a holding unit that adsorbs and holds the substrate, a measuring section that measures a physical quantity relating to a adsorption force of the holding unit with the substrate mounted on the holding unit; and a control section that carries out a first determination based on a first condition and a measurement result obtained by the measuring section and a second determination based on a second condition that is different from the first condition and a measurement result obtained by the measuring section to select one of at least three preset operations based on the result of first and second determinations to thereby execute processing depending on the selected operation.
摘要:
An exhaust gas purifying apparatus for an internal combustion engine, including a filter provided in an exhaust system of the engine for trapping particulates in exhaust gases, and a pressure difference sensor for detecting a pressure difference between an upstream side pressure of the filter and a downstream side pressure of the filter. A non-frozen state of the pressure difference sensor is determined based on at least one of a first parameter relevant to an exhaust gas temperature of the engine and a second parameter relevant to an atmospheric temperature. An abnormality of the filter is determined based on a result of the non-frozen state determination.
摘要:
A carburetor for a scavenged two-stroke internal combustion engine has an enriched fuel-and-air mixing passage extending through a housing of the carburetor. Engaged to the housing is a body of an air flow modular assembly which carries a primary air flow passage which houses a butterfly-type control valve therein. The throttle valve of the fuel-and-air mixing passage is mechanically linked or cammed to the control valve of the air flow passage so that opening of the throttle valve soon after opens the control valve allowing additional air to enter and provide a leaner fuel-and-air ratio in the combustion chamber of the engine when running under load. The air flow modular assembly has a sealing-and-bearing assembly which eliminates air leakage from the surrounding environment along the shaft of the control valve and into the primary air flow passage. The sealing-and-bearing assembly has a bushing which inserts into a counter bore of a cylindrical bore which receives the rotating shaft of the control valve. The bushing is thereby disposed radially and sealingly between the shaft and the body of the modular assembly to journal the shaft and prevent air leakage. To prevent air bypass leakage around the plate of the control valve within the air flow passage, the bushing and respective counter bore do not extend all the way through the body and into the air passage, instead, a cylindrical sealing surface which in-part defines the cylindrical bore, sealingly engages the shaft axially between the counter bore and the air flow passage. In this way, the plate and body interface at the location of the rotating shaft can more exactly follow the contour of the air flow passage, thereby preventing unwanted bypass air flow when the control valve is closed.