Engine
AssigneeYanmar Co., Ltd.
InventorHiroyasu Nishikawa
Life of this patent
Estimating the term…
Abstract
An engine includes an EGR apparatus which refluxes a portion of exhaust gas from an exhaust manifold to an intake manifold as EGR gas. A differential pressure sensor detects a differential pressure between intake pressure of the intake manifold and exhaust pressure in the exhaust manifold. The differential pressure sensor is mounted on a head cover which covers an upper portion of a cylinder head. An intake pressure taking-out passage which is in communication with the intake manifold is formed in the cylinder head. An intake pressure introducing passage which is connected to the differential pressure sensor is formed in the head cover. The intake pressure taking-out passage and the intake pressure introducing passage are in communication with each other.
Claims10
An engine comprising an EGR apparatus which refluxes a portion of exhaust gas from an exhaust system to an intake system as EGR gas, comprising differential pressure detecting means which detects differential pressure between intake pressure in the intake system and exhaust pressure in the exhaust system is mounted on a head cover which covers an upper portion of a cylinder head, an intake pressure taking-out passage which is in communication with the intake system is formed in the cylinder head, an intake pressure introducing passage which is connected to the differential pressure detecting means is formed in the head cover, and the intake pressure taking-out passage and the intake pressure introducing passage are in communication with each other.
Dependencies are inferred from the claim text.