US9057302 (Ford; Description)

"FIG. 1 schematically shows（概略的に示す）, in the form of a diagrammatic sketch（概略図）, a first embodiment of the internal combustion engine 1.

The internal combustion engine 1 has（有する）an intake system 2 for the supply of charge air and has（動詞の繰り返し） an exhaust-gas discharge system 3 for the discharge of the exhaust gases. An exhaust-gas turbocharger 4 is provided for（設ける）supercharging purposes（ために、目的）. The compressor 4a of the exhaust-gas turbocharger 4 is arranged（配設、配置）in an intake line 2a of the intake system 2, and the turbine 4b of the exhaust-gas turbocharger 4 is arranged in an exhaust line 3a of the exhaust-gas discharge system 3.

Various systems 5, 5a, 6, 6a, 7 for exhaust-gas aftertreatment（後処理）may be provided downstream of（下流）the turbine 4b.

Two selective catalytic converters（触媒コンバータ、排ガス浄化装置） 6, 7 may be provided for the reduction（還元） of nitrogen oxides, wherein（その場合）a further exhaust-gas aftertreatment system 5 is arranged upstream of（上流）said（前記、該）two selective catalytic converters 6, 7. In the present case（この場合、ここでは）, the further exhaust-gas aftertreatment system 5 is an oxidation catalytic converter 5a, wherein（そして、この場合） the selective catalytic converter 6, which is arranged downstream of（下流） the oxidation catalytic converter 5a in the exhaust line 3a, is formed（形成） integrally with a particle filter 6a as a combined exhaust-gas aftertreatment system. A second selective catalytic converter 7 is arranged in the exhaust-gas discharge system 3 downstream of the first selective catalytic converter 6 which（, which（非限定用法）の方がいいんじゃ？） is formed integrally with the particle filter 6a.

A bypass line 8 branches off from（分岐）the intake system 2 downstream of the compressor 4a and issues into（流入）the exhaust-gas discharge system 3 between the oxidation catalytic converter 5a and the combined exhaust-gas aftertreatment system comprising（から成る）the first selective catalytic converter 6 and the particle filter 6a.

A dosing device（注入装置）9 is provided for（ために設ける、配設） introducing liquid urea into the bypass line 8 in order to be able to（できるように）generate, that is to say（すなわち） provide, ammonia which serves as（働く、機能、役割）reducing agent for the selective catalytic converters 6, 7. A mixer 10 is provided in the bypass line 8 downstream of the dosing device 9, which mixer mixes the ammonia, which serves as reducing agent（無冠詞）, with the charge air in order to form as homogeneous an air-ammonia mixture as possible（できるだけ）, which flows through the catalytic converters 6, 7.

Likewise（同様）arranged in the bypass line 8 is（倒置） a control element 11 which serves for（働く、機能） adjusting the air flow rate conducted（通過） through the bypass line 8. A pivotable flap 11a serves as a control element 11.

FIG. 2 schematically shows, in the form of a diagrammatic sketch, a second embodiment of the internal combustion engine 1. It is sought to explain only the differences in relation to（相違のみを説明）the embodiment illustrated in FIG. 1, for which reason reference is otherwise made to FIG. 1. The same reference symbols have been used for the same components（同一の部品に同一の参照番号）.

By contrast to（対照、比較、対して）the embodiment illustrated in FIG. 1, no combined exhaust-gas aftertreatment system comprising a selective catalytic converter and a particle filter（不定冠詞；～なるもの） is provided in the case of the internal combustion engine 1 illustrated（示す） in FIG. 2. Instead, an oxidation catalytic converter 5a and a particle filter 6a, as further exhaust-gas aftertreatment systems 5, may be arranged in the exhaust-gas discharge system 3 upstream of a single selective catalytic converter 7. The oxidation catalytic converter 5a is arranged upstream of the particle filter 6a, wherein the bypass line 8 issues into the exhaust-gas discharge system 3 between the particle filter 6a and the selective catalytic converter 7.

Turning to（次に参照）FIGS. 3a and 3b an example method（例示的な方法） to control（for controllingにしたい気がする） the dosing temperature of the reductant is shown（示す）.

At（ステップで）402（番号のみ） the method may determine the desired torque. The desired torque may be determined from the engine speed（定冠詞）, driver input, various sensors, etc（等）.

At 404 the method may determine the desired boost pressure for the desired torque at step 402.

At 406 the method may adjust the boost pressure to the boost pressure desired determined at 404. The boost pressure may be adjusted to meet the boost pressure desired by adjusting one or more of the following: the variable turbo nozzle, a wastegate valve (not shown（図示しない）) positioned in an exhaust wastegate line (not shown) in parallel with the turbine for diverting a portion of exhaust flow across the turbine thereby controlling（それによって；分詞構文）exhaust flow through the turbine and boost. The control element also may be used to adjust boost by diverting air from the compressor away from the engine air intake.

At 408 the method may determine the ambient temperature and the compressor air temperature. For example, the temperatures may be measured by（により） sensors, determined from（から決定）engine operating parameters such as boost pressure, or may be estimated by（により推測）a simulation calculation.

At 410 the method may determine the dosing temperature. The dosing temperature may be determined for the ambient temperature and the compressor air temperature determined at 408. Further the dosing temperature may be determined by a sensor.

At 412 the method may determine if the dosing temperature is below a minimum threshold temperature. If no, the method may proceed to 414 and further determine if the dosing temperature is above a maximum threshold temperature. If no, the method may continue to（に続く）416 and no further steps may be needed. If yes at 414, the method may proceed to（進む、移行する） 418 and decrease the control element to decrease air flow from the compressor and increase the ambient air flow across the dosing device thereby decreasing its temperature.

...

At 424 the method may determine the allowed change in torque. The allowed change in torque may be determined based on（基づいて）engine load, tip in, engine temperature, etc. For example, at low load（無冠詞） the allowed change in torque may have a greater range and the method may give more weight to（重みを与える）temperature regulation of the bypass line. As another example（別の例）, at high load or medium load and tip in, the allowed change in torque may have a lower range and the method may give a lower weight to temperature regulation of the bypass line.

At 426 the method may determine if the change in torque is greater than the allowed change in torque. If no, the method may proceed to 428 and rejoin the method（戻る）at 412.

If yes, the method may proceed to 430 and determine if the change in torque is within a threshold to adjust the change in torque by throttle angle TA and/or injection timing. If no, the change in torque is outside the threshold the method may continue to 434. If yes, the method may proceed to 432 and adjust the TA and/or injection timing before rejoining the method at 426.

...

If no at 434, the method may end（終わる）." (Ford Global Technologies, LLC, US9057302)