An electronic throttle control mechanism having a housing and cover member
with a throttle valve, gear mechanism, motor, and failsafe mechanism. The housing,
cover member and other components are made of a plastic composite material. A
spring member positioned between the housing and sector gear member which is
attached to the throttle valve shaft, biases the throttle valve plate member toward the
closed position. A spring-biased plunger member biases the throttle plate member
from its closed position to a default or "limp-home" position. A metal reinforcing
plate is molded into the cover member in order to keep the gears in alignment and
maintain proper gear positioning during high temperature fluctuations.

Electronic throttle control mechanism with gear alignment and mesh maintenance system

A throttle device for an internal combustion engine designed to absorb variations in dimensions of components by centering a closed-bottom tube of an integral plug-type slide bearing with a plastic shaft part of a throttle shaft, inserting a tube of the slide bearing in a ring-shaped clearance formed between an inner circumference of a first shaft insertion hole of a first bearing support of a throttle body and outer circumference of a first sliding part of the plastic shaft, then fixing by welding a ring-shaped end face of a flange of the slide bearing to a ring-shaped end face of the first bearing support using a welding method such as laser welding.

Throttle device for internal combustion engine

An electronically controlled throttle control apparatus prevents a throttle valve from malfunctioning due to deterioration in sliding resistance ascribable to abrasive dust at a sliding contact portion between a valve gear of a geared reduction device and a coil spring. The outer periphery of a spring inner periphery guide is provided with a plurality of groove portions as abrasive dust removing means for removing abrasive dust at least from a sliding contact portion between the outer periphery of the spring inner periphery guide and the inner periphery of a default spring, so that individual edge portions of the plurality of groove portions can rub the inner periphery of the default spring to scrape off abrasive dust from the inner periphery of the default spring and direct the abrasive dust into the plurality of groove portions.

Electronically controlled throttle control apparatus

The present invention is generally directed towards an air induction system in a motor vehicle. The air induction system comprises an air filter, a clean air duct, a mass air flow sensor housing duct, a mass air flow sensor and a flow conditioning device. The flow conditioning device is disposed inside a mass air flow sensor housing duct. The flow conditioning device is located upstream from the mass air flow sensor. The air flowing through the clean air duct encounters turbulence near the walls of the duct. The flow conditioning device prevents the turbulent air from flowing into the mass air flow sensor.

Flow conditioning device

An electronic throttle control system having a housing and cover member with a throttle valve, gear mechanism, motor, and failsafe mechanism. A spring member positioned between the housing and sector gear member which is attached to the throttle valve shaft, biases the throttle valve plate member toward the closed position. A spring-biased plunger member biases the throttle plate member from its closed position to a default or “limp-home” position. A stop shoulder on the sector gear is transverse to the longitudinal axis of the plunger mechanism midway through the default range of travel of the sector gear and plunger member. This reduces stresses on the components and minimizes friction and wear on the gear train mechanism.

Electronic throttle control mechanism with reduced friction and wear

An electronic throttle control system having a housing 22 with a motor 40 , throttle valve 60 , gear mechanism 100 , and failsafe mechanism. A main spring member 130 positioned between the housing 22 and a gear mechanism 104 , which in turn is attached to the throttle valve shaft 62 , biases the throttle plate 60 towards the closed position. A spring-biased default mechanism 132, 134 biases the throttle plate 60 from its closed position to a default or “limp-home” position.

Electronic throttle return mechanism with a two-spring and two-lever default mechanism

The present invention relates to an electronic throttle control system having a housing (22) with a motor (40), throttle valve (60), gear mechanism (100), and failsafe mechanism (130). A spring member (150) attached between the housing (22) and a gear member (104) attached to the throttle valve shaft (62) biases the throttle plate (60) towards the closed position. A spring-biased plunger member (134) biases the throttle plate (60) from its closed position to a default or "limp-home" position.

Electronic throttle control system with two-spring failsafe mechanism

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Electronic throttle return mechanism with a two-spring and two-lever default mechanism

Electronic throttle control system with two-spring failsafe mechanism