Back to results
US 2011/0253108 A1Published application
Control system of internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTakashi Kawasaki
Life of this patent
Estimating the term…
Abstract
An internal combustion engine wherein a variable compression ratio mechanism which can change the mechanical compression ratio and a detection sensor for detecting the mechanical compression ratio are provided and wherein the mechanical compression ratio is controlled based on the mechanical compression ratio detected by the detection sensor. When a signal line of the detection sensor breaks, the mechanical compression ratio is lowered to the minimum mechanical compression ratio.
Claims8
1-9. (canceled)
A control system of an internal combustion engine comprising:
- a variable compression ratio mechanism able to change a mechanical compression ratio;
- a variable valve timing mechanism able to control a closing timing of an intake valve;
- the closing timing of the intake valve approaching an intake bottom dead center as an engine load becomes higher,
- a detection device for detecting the mechanical compression ratio;
- and
- a compression ratio control device controlling the mechanical compression ratio on the basis of the mechanical compression ratio detected by the detection device;
- wherein when an abnormality occurs in the detection device, the mechanical compression ratio is lowered to a minimum mechanical compression ratio, the closing timing of the intake valve is fixed to a closing timing at the time of an engine high load operation, and control of an amount of intake air by the variable valve timing mechanism is switched to control of an amount of intake air by a throttle valve.
4 more elements
Dependencies are inferred from the claim text.