초록 ▼

A sump draining apparatus having an pressure transducer engaged in a receptacle that is in turn engaged in an open-ended collar of a housing. The receptacle and thus the pressure transducer is slideable in the axial direction into and out of the open-ended collar. The housing is generally cylindrica

A sump draining apparatus having an pressure transducer engaged in a receptacle that is in turn engaged in an open-ended collar of a housing. The receptacle and thus the pressure transducer is slideable in the axial direction into and out of the open-ended collar. The housing is generally cylindrical and contains a pump and motor, each of which has a generally cylindrical shape and is axially stacked in the housing. A cord having a vent and electrical leads for the pressure transducer is releasably engaged via a cord restraint at one end portion of the housing and the pressure transducer is releasably engaged in the receptacle in the open-ended collar at the other end of the housing. The receptacle and sensor may be removed, serviced, and/or replaced without the housing being opened and without the pump and motor being removed.

대표청구항 ▼

A sump draining apparatus having an pressure transducer engaged in a receptacle that is in turn engaged in an open-ended collar of a housing. The receptacle and thus the pressure transducer is slideable in the axial direction into and out of the open-ended collar. The housing is generally cylindrica

A sump draining apparatus having an pressure transducer engaged in a receptacle that is in turn engaged in an open-ended collar of a housing. The receptacle and thus the pressure transducer is slideable in the axial direction into and out of the open-ended collar. The housing is generally cylindrical and contains a pump and motor, each of which has a generally cylindrical shape and is axially stacked in the housing. A cord having a vent and electrical leads for the pressure transducer is releasably engaged via a cord restraint at one end portion of the housing and the pressure transducer is releasably engaged in the receptacle in the open-ended collar at the other end of the housing. The receptacle and sensor may be removed, serviced, and/or replaced without the housing being opened and without the pump and motor being removed. n claim 2, wherein the adjusting mechanism comprises a turbocharger which supercharges the fresh air in the intake passage according to a pressure of the exhaust gas in the exhaust gas passage, the turbocharger comprises a variable nozzle which adjusts the exhaust gas pressure, and the microprocessor is further programmed to calculate a target opening value of the variable nozzle from the second target value and the target exhaust gas recirculation value, and control an opening value of the variable nozzle to the target opening value.5. The control device as defined in claim 4, wherein the adjusting mechanism further comprises a throttle which adjusts a fresh air supply amount to the turbocharger, and the microprocessor is further programmed to calculate a target amount of the fresh air aspirated by the intake passage from the second target value, and control the throttle to a reduced opening when the fresh air target amount is less than a predetermined flowrate.6. The control device as defined in claim 2, wherein the first target value is an excess air factor which is a ratio of an air-fuel ratio of the mixture and a stoichiometric air-fuel ratio, the running condition detection sensor comprises a sensor which detects a load of the engine, and the excess air factor is set to be smaller the larger the load.7. The control device as defined in claim 2, wherein the running condition detection sensor, comprises one of a sensor which detects a cooling water temperature of the engine, a sensor which detects a temperature of the fresh air and a sensor which detects an atmospheric pressure, and the microprocessor is further programmed to calculate the first target value based on one of the cooling water temperature, fresh air temperature and atmospheric pressure.8. The control device as defined in claim 2, wherein the first target value is an excess air factor which is a ratio of an air-fuel ratio of the mixture and a stoichiometric air-fuel ratio, the diesel engine further comprises a catalytic converter which reduces nitrogen oxides in the exhaust gas passage, the microprocessor is further programmed to determine whether or not a condition is satisfied for reducing nitrogen oxides by the catalytic converter, and when the reducing condition is satisfied, the microprocessor temporarily sets the excess air factor to a value less than 1.0.9. The control device as defined in claim 8, wherein the microprocessor is further programmed to prevent the excess air factor from being less than 1.0 for longer than a predetermined time period.10. A control device for an engine, the engine comprising an intake passage which aspirates fresh air, an adjusting mechanism which varies an aspirating amount of fresh air of the intake passage, an exhaust passage which discharges an exhaust gas of the engine, an exhaust gas recirculation valve which recirculates part of the exhaust gas into the intake passage and a fuel supply mechanism which supplies a fuel to the engine, the engine burning the fuel with a mixture of fresh air aspirated by the intake passage and exhaust gas recirculated by the exhaust gas recirculation valve, the device comprising: means for detecting a running condition of the engine; means for detecting the aspirating amount of the fresh air of the intake passage; means for determining a target exhaust gas recirculation value of the exhaust gas recirculation valve according to the running condition; means for controlling the exhaust gas recirculation valve based on the target exhaust gas recirculation value; means for calculating a first target value according to the running condition, the first target value representing a relation between an amount of air and an amount of the fuel supplied to the engine; means for calculating a second target value based on the first target value and the target exhaust gas recirculation value, the second target value representing a relation between an amount of the fresh air aspirated by