Fuel supply structure in vehicle engine
AssigneeHonda Motor Co., Ltd.
InventorShin Nishimura
Life of this patent
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Abstract
A main fuel injection valve and a secondary fuel injection valve are separately housed in a purified chamber and an unpurified chamber of an air cleaner. A common fuel supply conduit for leading fuel from a fuel tank is connected to a branching connection pipe which is supported to pass through a cleaner case and a bulkhead and which is placed in one of the unpurified chamber and the purified chamber 49. The branching connection pipe is connected to a main fuel injection valve side branched fuel conduit and a secondary fuel injection valve side branched fuel conduit.
Claims18
A fuel supply structure in a vehicle engine, said fuel supply structure comprising:
- an air cleaner configured to be divided in a cleaner case by a bulkhead, said bulkhead holding a cleaner element in an unpurified chamber and a purified chamber;
- a main fuel injection valve configured to inject fuel into an intake passage that enables communication between an intake port provided in a cylinder head of an engine body and the purified chamber;
- and
- a secondary fuel injection valve configured to inject fuel into the intake passage on an upper side relative to the main fuel injection valve in a flow direction in the intake passage,
- wherein one of the main fuel injection valve and the secondary fuel injection valve is housed in the purified chamber, wherein another of the main fuel injection valve and the secondary fuel injection valve is housed in the unpurified chamber, wherein a common fuel supply conduit configured to lead fuel from a fuel tank to the main fuel injection valve and the secondary fuel injection valve in common is connected to a branching connection pipe which is supported to pass through the cleaner case and the bulkhead and which is disposed in one of the unpurified chamber and the purified chamber, and wherein the branching connection pipe is connected to a main fuel injection valve side branched fuel conduit configured to lead fuel toward the main fuel injection valve side and to a secondary fuel injection valve side branched fuel conduit for leading fuel toward the secondary fuel injection valve side.
A fuel supply structure in a vehicle engine, said fuel supply structure comprising:
- air cleaner means for cleaning air, said air cleaner means being divided in a cleaner case means by a bulkhead, said bulkhead holding cleaner element means in an unpurified chamber and a purified chamber;
- main fuel injecting means for injecting fuel into an intake passage that enables communication between an intake port in a cylinder head of an engine body and the purified chamber;
- secondary fuel injection means for injecting fuel into the intake passage on an upper side relative to the main fuel injection means in a flow direction in the intake passage,
- wherein one of the main fuel injection means and the secondary fuel injection means is housed in the purified chamber, wherein another of the main fuel injection means and the secondary fuel injection means is housed in the unpurified chamber, wherein a common fuel supply means for leading fuel from a fuel tank to the main fuel injection means and the secondary fuel injection means in common is connected to a branching connection pipe means which is supported to pass through the cleaner case means and the bulkhead and which is disposed in one of the unpurified chamber and the purified chamber, and wherein the branching connection pipe means is connected to a main fuel injection means side branched fuel conduit means for leading fuel toward the main fuel injection means side and to a secondary fuel injection means side branched fuel conduit means for leading fuel toward the secondary fuel injection means.
Dependencies are inferred from the claim text.