Abstract: A throttle body for an automobile includes a housing defining a plurality of bores separated by a central wall. A passageway is defined through the central wall. A shaft is rotatably received within the passageway. A plurality of plates is coupled with the shaft. A contacting preventing means is configured to selectively engage the shaft upon deflection of the shaft in the region of the central wall to prevent contact between the shaft and the housing.

Abstract: A throttle body for an automobile and a method of assembly of a throttle body are provided. The throttle body includes a throttle shaft defining a rotational axis, a housing having a bore, a deformable member located on the throttle shaft and at least partially-located within the bore, and a bearing having an inner surface and an outer surface. The bearing inner surface forms a press-fit connection with the deformable member to substantially prevent movement between the throttle shaft and the bearing in a direction parallel to the rotational axis.

Abstract: 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.

Abstract: An electronic throttle control system with a plastic composite housing member and injection molded motor assembly. The motor assembly is preassembled with a gear shaft member to a metal mounting plate which in turn is injection molded into the composite housing member. A portion of the motor is secured to the electronic throttle control housing during the injection molding process. The distance between the gear shaft member and motor remains constant.

Abstract: A modular electronic throttle valve system for an internal combustion engine. A modular subassembly including at least a housing, motor, gear train and electronic sensors are mated with a two-piece air passageway subassembly. Bearings on the throttle shaft hold the throttle shaft in position in the clamshell member. A throttle shaft and throttle valve plate are either positioned in the modular subassembly with the housing, motor, gear train and electronic sensors, or included in the clamshell subassembly with a coupling member. The clamshell member and modular housing are secured together to form the completed electronic throttle control mechanism.

Abstract: A modular electronic throttle valve system for an internal combustion engine. A modular subassembly including at least a housing, motor, gear train and electronic sensors are mated with a two-piece air passageway subassembly. Bearings on the throttle shaft hold the throttle shaft in position in the clamshell member. A throttle shaft and throttle valve plate are either positioned in the modular subassembly with the housing, motor, gear train and electronic sensors, or included in the clamshell subassembly with a coupling member. The clamshell member and modular housing are secured together to form the completed electronic throttle control mechanism.

Abstract: 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.

Abstract: 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. Several of the components, such as the motor holder, electrical connectors and housing for the throttle position sensor (TPS), are molded together into the cover member to form an integrated modular assembly. This reduces the cost and weight and improves the reliability and overall size of the mechanism.

Abstract: A throttle body (61) has a first body part (62) containing an upstream portion of a through-bore (68) and a second body part (64) containing a downstream portion of the through-bore. The two body parts are joined together to register the downstream portion of the through-bore as a continuation of the upstream portion at respective confronting faces of the two body parts. A throttle mechanism (92) is captured between the two body parts. The mechanism includes a torsion spring (78) external to the through-bore having tails (78A, 78B) respectively associated with formations in the exterior of the throttle body and in a cam on the shaft for spring-biasing a throttle blade (70) of the mechanism that is disposed within the through-bore to closed position.

Abstract: A throttle body (61) has a first body part (62) containing an upstream portion of the through-bore (68) and a second body part (64) containing a downstream portion of the through-bore. The two body parts are joined together to register the downstream portion of the through-bore as a continuation of the upstream portion at respective confronting faces of the two body parts, capturing at least one bearing assembly (94) of a throttle mechanism between the confronting faces to thereby journal a throttle shaft (72) on opposite wall portions of the throttle body. The two body parts also contain a by-pass air passage (114). In one form (FIGS. 1 and 2) an idle air control valve (58) associates with the by-pass passage; in another (FIGS. 3 and 4), an electric motor actuator (167) associates with the passage and with the throttle shaft.

Abstract: A throttle body (11) has a through-bore (18), a circular throttle blade (20) of nominal uniform thickness is disposed within the through-bore and on a cylindrical shaft (22). The through-bore has two generally semi-circular ledges (56, 58) spaced upstream and downstream respectively from an imaginary flat plane that contains the shaft axis, each at a distance substantially equal to one-half the blade thickness. One ledge occupies essentially one semi-circumference of the through-bore for sealing with one of the opposite semi-circular perimeters of the throttle blade when the blade is closed, and the other occupies essentially an opposite semi-circumference of the through-bore for sealing with the other semi-circular perimeter of the blade when the blade is closed.

Abstract: A throttle body (61) has a first body part (62) containing an upstream portion of the through-bore (68) and a second body part (64) containing a downstream portion of the through-bore. The two body parts are joined together to register the downstream portion of the through-bore as a continuation of the upstream portion at respective confronting faces of the two body parts, capturing bearing assemblies (94, 96) of a throttle mechanism (92) between the confronting faces to thereby journal the shaft on opposite wall portions of the throttle body. A gasket (116) is disposed between the confronting faces to circumferentially seal the through-bore, including sealing between the bearing assemblies and the confronting face of the first throttle body part.