Engine
AssigneeIndian Motorcycle International, LLC
InventorsMichael J. Bluhm, Bryan D. O'Rourke, Craig M. Beach, G. Jay McKoskey, Sven Mueller
Life of this patent
Estimating the term…
Abstract
An engine is disclosed of the V-configuration having an integrated engine and transmission. The engine has an engine ventilation system communicating between the crankcase and an upper end of the valve cover, whereby blow-by gases can be returned to the air intake system to recycle the unspent fuel. The engine also includes an easily accessible/removable cam, such that the camshaft may be removed without removing the rocker arms. The engine also includes a lubrication system for lubricating components of the engine and transmission.
Claims17
A powertrain having an engine and a transmission, comprising:
- a crankcase having a first compartment housing components of the engine, a second compartment housing components of the transmission and a third compartment for lubricant storage for the engine and transmission components, the first, second and third compartments being separated from each other;
- a first cavity separate from any of the compartments, but in fluid communication with, the first compartment;
- and
- a second cavity separate from any of the compartments and the first cavity, but in fluid communication with, the second compartment, at least one wall separating the second cavity from the first cavity;
- wherein lubrication oil from the engine and transmission components drain into one of the first or second cavities.
A powertrain, comprising:
- an engine, comprising:
- a crankcase;
- a crankshaft journaled in the crankcase;
- a piston coupled to the crankshaft;
- a cylinder in which the piston reciprocates,
- a head positioned over the piston and cylinder;
- a transmission coupled to the engine;
- an oil lubrication system for the engine and transmission, the oil lubrication system comprising a three stage pump where a first stage is a pressure pump feeding lubrication to at least some of the engine and transmission components, a second stage is a first scavenge pump for retrieving oil from the engine components and a third stage is a second scavenge pump for retrieving oil from the transmission components, wherein the first stage includes an oil pickup separate from the second and third stages.
A powertrain, comprising:
- a crankcase having first, second and third compartments each separated by a sidewall, the first compartment having a lower wall having a first opening therethrough, and the second compartment having a lower wall having a second opening therethrough;
- an engine, comprising:
- a crankshaft journaled in the crankcase first compartment;
- a piston coupled to the crankshaft;
- a cylinder in which the piston reciprocates,
- a head positioned over the piston and cylinder;
- a transmission housed in the crankcase second compartment and coupled to the engine;
- an oil lubrication system for the engine and transmission;
- a first cavity below the first opening for receiving oil drainage from at least some of the engine or transmission components;
- a second cavity below the second opening for receiving oil drainage from at least some of the engine or transmission components;
- a first scavenge pump with a pickup fluidly coupled with the first cavity and a discharge fluidly coupled with the third compartment;
- and
- a second scavenge pump with a pickup fluidly coupled with the second cavity and a discharge fluidly coupled with the third compartment.
Dependencies are inferred from the claim text.