Back to results
US 11,821,359 B2Granted
V8 engine
AssigneeHonda Motor Co., Ltd.
InventorsTakeshi Okada, Tatsuya Kuroda, Masami Okubo
Life of this patent
Estimating the term…
Abstract
A V8 engine, each bank of which is configured such that four crank pins connected to four piston pins via a connecting rod are positioned at 90° intervals when viewed from one end of a crankshaft. The four crank pins on the bank side are offset by 60° relative to the four crank pins on the bank side when viewed from the one end.
Claims7
A V8 engine in which a bank angle between two banks is 60°, the V8 engine comprising:
- a crankshaft;
- eight pistons disposed in respective cylinders of the banks;
- and
- eight connecting rods having small end portions engaged with piston pins provided on the respective pistons, and having large end portions engaged with crank pins provided on the crankshaft,
- wherein
- for each of the banks, among four of the crank pins, which are connected via the connecting rods to four of the piston pins, a crank pin on a side of one end portion of the crankshaft and a crank pin on a side of another end portion of the crankshaft are arranged point-symmetrically with the crankshaft interposed therebetween, when viewed from the one end portion,
- among two of the crank pins between the crank pin on the side of the one end portion and the crank pin on the side of the other end portion, the crank pin in proximity to the one end portion is arranged so as to be offset by 270° with respect to the crank pin on the side of the one end portion, and the crank pin in proximity to the other end portion is arranged so as to be offset by 90° with respect to the crank pin on the side of the one end portion,
- with respect to the crank pin on the side of the one end portion of one of the banks, the crank pin on the side of the one end portion of another of the banks is offset by 60°, when viewed from the one end portion,
- with respect to the crank pin on the side of the other end portion of the one of the banks, the crank pin on the side of the other end portion of the other of the banks is offset by 60°, when viewed from the one end portion,
- with respect to the crank pin in proximity to the one end portion of the one of the banks, the crank pin in proximity to the one end portion of the other of the banks is arranged so as to be offset by 60°, when viewed from the one end portion, and
- with respect to the crank pin in proximity to the other end portion of the one of the banks, the crank pin in proximity to the other end portion of the other of the banks is arranged so as to be offset by 60°, when viewed from the one end portion.
8 more elements
A V8 engine in which a bank angle between two banks is 60°, the V8 engine comprising:
- a crankshaft;
- eight pistons disposed in respective cylinders of the banks;
- and
- eight connecting rods having small end portions engaged with piston pins provided on the respective pistons, and having large end portions engaged with crank pins provided on the crankshaft,
- wherein
- for each of the banks, among four of the crank pins, which are connected via the connecting rods to four of the piston pins, a crank pin on a side of one end portion of the crank shaft and a crank pin on a side of another end portion of the crankshaft are arranged point-symmetrically with the crankshaft interposed therebetween, when viewed from the one end portion,
- among two of the crank pins between the crank pin on the side of the one end portion and the crank pin on the side of the other end portion, the crank pin in proximity to the other end portion is arranged so as to be offset by 270° with respect to the crank pin on the side of the one end portion, and the crank pin in proximity to the one end portion is arranged so as to be offset by 90° with respect to the crank pin on the side of the one end portion, and
- with respect to the crank pins on the side of the one end portion of one of the banks, the crank pin on the side of the one end portion of another of the banks is offset by 60°, when viewed from the one end portion,
- with respect to the crank pin on the side of the other end portion of the one of the banks, the crank pin on the side of the other end portion of the other of the banks is offset by 60°, when viewed from the one end portion,
- with respect to the crank pin in proximity to the one end portion of the one of the banks, the crank pin in proximity to the one end portion of the other of the banks is arranged so as to be offset by 60°, when viewed from the one end portion, and
- with respect to the crank pin in proximity to the other end portion of the one of the banks, the crank pin in proximity to the other end portion of the other of the banks is arranged so as to be offset by 60°, when viewed from the one end portion.
8 more elements
Dependencies are inferred from the claim text.