Asymmetry cda engine
AssigneeHyundai Motor Company
InventorsIn Sang Ryu, lngee SUH, Kyoung Pyo HA, Back Sik KIM, Kiyoung KWON
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Abstract
An asymmetry cylinder de-activation (CDA) engine provided with a first, a second, a third and a fourth cylinder of which CDA apparatuses are mounted thereto respectively may include a crankshaft connected with pistons of each cylinder through a first, a second, a third and a fourth cranking journal respectively, and a controller configured to control operations of the CDA apparatuses, in which phase differences between cranking journals according to firing order may include 90±10 degrees and 270±10 degrees.
Claims18
An asymmetry cylinder de-activation (CDA) engine provided with a first, a second, a third and a fourth cylinder of which CDA apparatuses are mounted thereto respectively, the asymmetry CDA engine comprising:
- a crankshaft connected with pistons of each cylinder through a first, a second, a third and a fourth cranking journal respectively;
- and
- a controller configured to control operations of the CDA apparatuses,
- wherein phase differences between cranking journals according to firing order include 90±10 degrees and 270±10 degrees.
The asymmetry CDA engine of claim, wherein the controller is configured to operate at least one CDA apparatus according to a load of the engine.
An asymmetry CDA engine provided with a plurality of CDA apparatuses, the asymmetry CDA engine comprising:
- a crankshaft connected with pistons of each cylinder through cranking journals respectively;
- and
- a controller configured to control operations of the CDA apparatuses,
- wherein a minimum phase difference between cranking journals according to firing order is less than ½ of a maximum phase difference between cranking journals.
Dependencies are inferred from the claim text.