COMPRESSION IGNITION GASOLINE ENGINE
First Claim
1. A compression ignition gasoline engine comprising:
- a cylinder for accommodating a piston to be reciprocally movable;
a fuel injection valve for injecting fuel containing gasoline as a main component into the cylinder;
an EGR device operative to perform high-temperature EGR of introducing burnt gas generated in the cylinder into the cylinder at a high temperature; and
a combustion control unit for controlling the fuel injection valve and the EGR device in such a way that HCCI combustion in which fuel injected from the fuel injection valve self-ignites within the cylinder occurs, whereinthe combustion control unit controls the EGR device in such a way that, in at least a partial load operating range in which HCCI combustion is performed, an EGR rate increases, as compared with a low load condition, in a high load condition in which G/F being a ratio between a total amount of gas and a fuel amount within the cylinder decreases.
1 Assignment
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Accused Products
Abstract
A compression ignition gasoline engine includes a fuel injection valve for injecting fuel containing gasoline as a main component into a cylinder; an EGR device operative to perform high-temperature EGR of introducing burnt gas generated in the cylinder into the cylinder at a high temperature; and a combustion control unit for controlling the fuel injection valve and the EGR device in such a way that HCCI combustion in which fuel injected from the fuel injection valve self-ignites within the cylinder occurs. The combustion control unit controls the EGR device, in at least a partial load operating range in which HCCI combustion is performed, in such a way that the EGR rate increases, as compared with a low load condition, in a high load condition in which G/F being a ratio between a total amount of gas and a fuel amount within the cylinder decreases.
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Citations
5 Claims
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1. A compression ignition gasoline engine comprising:
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a cylinder for accommodating a piston to be reciprocally movable; a fuel injection valve for injecting fuel containing gasoline as a main component into the cylinder; an EGR device operative to perform high-temperature EGR of introducing burnt gas generated in the cylinder into the cylinder at a high temperature; and a combustion control unit for controlling the fuel injection valve and the EGR device in such a way that HCCI combustion in which fuel injected from the fuel injection valve self-ignites within the cylinder occurs, wherein the combustion control unit controls the EGR device in such a way that, in at least a partial load operating range in which HCCI combustion is performed, an EGR rate increases, as compared with a low load condition, in a high load condition in which G/F being a ratio between a total amount of gas and a fuel amount within the cylinder decreases. - View Dependent Claims (2, 3, 4, 5)
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Specification